Compact 1 TB
(Direct Attached Storage)
 
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NAS-8100

About NAS
NAStorage
Installation/Configuration
Device Management
Peripheral Devices and Adapters
RAID
Data Accessing
Data Backup
SmartSync
Network Connectivity
Volume & Share Management
Security
Power Management
Event Log and Notification

About NAS
What is NAS?

NAS (Network Attached Storage) is the term used to refer to storage elements that connects to a network and provides file access services to computer systems. A NAS storage element consists of an engine, which implements the file services, and one or more devices on which data is stored. NAS may be attached to any type of network.

What is the difference between NAS and SAN?

Compared to NAS, SAN (Storage Area Network) is a network architecture whose primary purpose is the transfer data between computer systems and storage elements, and among storage elements.

Here're some brief comparisons for your reference:
NAS SAN
Cost is lower Cost is higher
Data typically is accessed by clients Data typically is accessed by servers
File system resides in NAS File system resides in server
For small business and workgroup For large enterprise
Providing file-based data accessing Providing block-based data transfer
Using standard file sharing protocol Using encapsulated SCSI protocol

Will NAS affect network performance?

While NAS is implemented in the networking environment, it will balance the network traffic and relieve the network congestion

What're the differences between NAS and general-purpose NT or UNIX file server?

Please refer to below table:
NAS File Server
Dedicated File serving, Disk I/O, Network traffic, User authentication and Security tasks For general-purpose use
Easy remote, web-based management interface Local software-based management
No client licensing cost User access limitation due to client licenses
No down time during Network storage expansion Server needs to be shutdown and file serving to be stopped when Storage expansion required
Optimized and compact hardware design Oversized hardware design with complex architecture to fit a variety of applications
OS design is optimized for file service OS design is for general purpose use
Thin and compact OS Fat and complex OS
True cross-platform file sharing OS-dependent file sharing

NAStorage

 
What is NAStorage?

NAStorage is the Over-TB class NAS product that features massive storage capacity, full-range of data protection and superior system availability. NAStorage provides a cost-effective, high reliability and high performance network storage system for the fast growing network storage.

What are the benefits I get from NAStorage?

NAStorage is a NAS product. It's designed with massive storage capacity and high performance network speed. Especially in data security control, following advantages are available:
. New hardware design platform with a powerful CPU (Intel Celeron 1.2 GHz CPU).
. Supports up to 512MB SDRAM.
. Four EIDE UDMA-133 channels are supported by hot swap (Optional), global hot spare and hot expansion (optional).
. Storage capacity in RAID 5 can be expanded without downtime.
. One independent EIDE UDMA-100 channel can be connected to CD/DVD-ROM, CD-R/RW, DVD+R/RW, DVD-R/RW or tape drives for data backup purpose.
. Built-in dual NIC support 10/100 Base T provides fail-over, load-balancing and trunking policy.
. One Gigabit NIC (optional).
. Huge storage capacity of over a TB.
. An easy to use LCD panel with 3 buttons for status monitoring and configuration.
. Supports SNMP protocol and can send traps for notified event.
. Supports SMPT protocol and can send e-mail for notified event.
. Supports ACL (Access Control List).
. NAStorage can be seamlessly integrated into heterogeneous networking security.
. Set disk quota for capacity control.
. Power management support integrated with UPS system via smart signaling.
. Power management: Redundant Power Supply (Optional), safe shutdown and scheduled power on/off.
. Data backup and archive functions are supported with the local tape drive, CD/DVD writer or remote storage server NAStorage or CDH.

What are the differences between NAStorage and other NAS products?

With the expertise in networking storage for years, NAStorage has its own unique advantages. NAStorage is the out-standing product that provides storage capacity over a TB in the same NAS chassis. In addition, the primary design concept of NAStorage emphasizes the importance of data protection and system availability. Therefore, users can enjoy the benefits from this state-of-art NAS product

What kind of OS is used in NAStorage?

NAStorage is equipped with the Linux-based OS that is optimized for networking storage. The OS is developed to seamlessly integrate with SlimServerT technology.

What are the differences between NAStorage OS and Microsoft SAK?

The OS of NAStorage is a Linux-based OS that is optimized for networking storage. SAK (Server Appliance Kit) is the Windows-based OS that is derived from Windows NT/2000/XP for server appliance product development. Generally, OS of Windows family, such as SAK, can be used as an easy application for NAS due to its built-in support of various protocols and drivers. Linux OS, however, can accomplish the same task as the SAK. Generally speaking, there are many factors that require to be looked at when purchasing a NAS to fulfill your need. Factors include cost, hardware and software reliability, manageability, etc. Linux OS or SAK can also be one of the factors on which the decision of purchasing a NAS server is based.
From some points of view, these facts require to be considered:
. Linux systems are relatively immune from attacks from outsiders.
. Attacks by computer viruses are overwhelmingly more common on Windows family OS than any other systems, such as Linux

Is the OS of NAStorage stored in the hard disk drive?

No, OS of NAStorage is not stored in hard disk drive. Instead, OS and system configuration information of NAStorage are stored in the DOM (disk on module) - a flash memory. DOM is more reliable and more secure than the hard disk drive eliminating the concern about system crash at hard disk failure.

Is there any storage management function provided for NAStorage?

RAID management, Disk quota and Scan disk are management functions provided in the NAStorage.

Installation & Configuration

 
How easy is it to install/initialize the NAStorage?

NAStorage is specifically designed as a plug & play stand-alone server. It is not necessary for you to install any additional server or any driver/software application in your client PC. The only thing you have to do is "plug in the network cable and power on NAStorage". Only a few simple steps have to be taken before you can access data from NAStorage server.
1. Go to the web-based Admin Home page.
2. Go to "Volume" page to create volumes even folders.
3. Create a share for network share via "Security" page.
4. Assign appropriate permission to the shared volume or folder

Can the LCD panel be used to configure the NAStorage?

Yes, you can manipulate the LCD panel to make some basic settings for the NAStorage such as "IP Address", "Subnet Mask", "Default Gateway", "Time/Date", etc.

What are the advantages of having the LCD panel on NAStorage?

In addition to performing the basic settings on the LCD panel, the NAStorage will report some of the system status onto the LCD panel such as CPU Temperature, Configuration, Firmware Version, Event Status, etc. It is very convenient for the system administrator to get the major system status without having to go into web-based administration page

What will be the status of NAStorage if the option "Reset configuration to factory default" within shutdown is invoked?

All the settings of NAStorage will be return to default value after it has been set to " Reset configuration to factory default ", which are:
. Server settings: Notification level, LCD banner, Code Page, Schedule power-on/shutdown, Administration password, Time Zone, etc.
. Network settings: IP relative settings, server/workgroup/domain names, security mode, etc.

What are the default values of major NAStorage settings?

The default settings relative to first time installation are:
1. IP address: 192.168.1.1
2. Domain/Workgroup name: WorkGroup
3. Server name: NASxxxxxxxx
"xxxxxxxx" is the last 8-digit of the MAC address of the NAStorage controller. The MAC address is found at the back of the tower.

What is to be done if the administration password of the NAStorage is forgotten?

NAStorage provides an option to clear the administration password. Please follow the below mentioned steps to clear you password:
1. Shutdown and turn off the NAStorage.
2. Set the DIP switch located in the power connector of control board to 1:on, 2:on.
3. Power on the NAStorage till you see the message "Clear Password" displayed on the LCD panel.
4. Turn off the NAStorage and set the DIPswitch back to 1:off, 2:off.
5. Turn on the NAStorage again, and you will see that the administration password has been restored to factory default

How to use the "DIP switch" (S1) located on the NAStorage Control Board?

There are four modes to which the DIP switch can be set; you also can set DIP switch to whether connect with hot swap HDD module (MR423I):
DIP1 and DIP2:
1. Normal Mode: (default setting) DIP1 =Off, DIP2 =Off.
2. Recovery Mode: DIP1 =On, DIP2 =Off.
3. Manufacture Mode: DIP1 =Off, DIP2 =On.
4. Clear Admin Password: DIP1 =On, DIP2 =On.

DIP3:
1. Connect with hot swap HDD module (MR423I) DIP3=Off
2. Connect without hot swap HDD module (MR423I) DIP3=On
Basically, the users can only access their NAStorage in the "Normal Mode". The "Recovery" and "Manufacture" modes are only available for diagnostic purposes by the manufacturer; and the normal user will not be able to access NAStorage under these two modes. In addition, NAStorage will clear admin password to empty when the DIP switch is set in the "Clear Admin Password". Please remember that you have to change the setting back to "Normal Mode" before NAStorage boots at next time.

What is the minimum memory capacity requirement for NAStorage?

We strongly recommend at least 128MB memory (SDRAM) to be installed in NAStorage for maintaining the basic functionality; that will also prevent the system resources from being insufficient while performing some memory-consuming tasks.

How to use NAStorage "Network Recovery Mode"?

Please refer the Technical Guide - Administrator Guide - Network Recovery Mode (pdf file).

How to differentiate IDE flat and round cables delivered with NAStorage and MR-423I pack?

Blue round cable (part no: 5011.1402)--> connects with the MR-423I (hot swappable rack) --> 2 cables are delivered with all MR-423I racks together with a I²C cable (part no: 5044.16016) "4 wires + the 2 fixed connectors".
Green round cable (part no: 5011.14027)--> connects with the CD/DVD/tape devices (5th IDE channel in the NAStorage controller)--> 1 cable delivered with the basic NAStorage controller pack.
Yellow flat cable (part no: 5011.14025, 5011.14026)--> HDD's directly connected with the NAStorage when they are not used with a MR-423I rack--> 4 flat yellow cables delivered with the basic NAStorage controller pack.
Mixing the cables with the applications will cause malfunctioning of the NAStorage. Please keep it in mind and be particularly aware of the fact that the NAStorage features of hot swap and hot spare need imperatively the MR432I hot swappable rack. No other exists on the market as special electronic circuitry has been added on its backplane by our engineering team to function properly with the NAStorage controller's refer the Technical Guide - Administrator Guide - Network Recovery Mode (pdf file).

How to set NAStorage all configurations back to factory default?

NAStorage provides two methods for setting configuration back to factory default; you can set it through web page or adjust hardware jumper on motherboard.
Web page:
1. Go to Admin Home page.
2. Select Server Settings.
3. Select Shutdown of sub menu.
4. Enable "Reset configuration to factory default".
5. Click "Reboot" button for completed the process.
Hardware jumper:
1. Turn off NAStorage.
2. Fine out a Jumper (JP1) on motherboard, which located near the front LCD panel.
3. Set the jumper from short pin 1-2 to short pin 2-3 (like as PC's clear CMOS).
4. Set the jumper back to short 1-2.
5. Turn on NAStorage; all configurations were back to factory default.

When I use web browser (eg. Microsoft IE) with proxy enabled to manage NAStorage, even to upgrade latest firmware. Why did the web browser show me like "The page cannot be displayed"?

NAStorage management interface was designed through web browser. Thus, when you want to set or modify some configurations, NAStorage has to get the real-time information.
Here is the workaround for your reference:
1. Open the IE browser.
2. Select the Tools->Internet Options->Connections->LAN Settings.
3. Click the "Advanced" button.
4. Within the "Exceptions" item fill in the window with IP address of NAStorage.
5. Click "OK" to complete setting.

Device Management

 

What kind of device interfaces can NAStorage support?

NAStorage supports CD/DVD-ROM, CD-R/RW, DVD+-R/RW and hard disk drives of EIDE interface

How many storage devices can be connected to NAStorage?

There are 4 EIDE UDMA-133 channels and one independent EIDE UDMA-100 channel supported by NAStorage. This means you can connect up to 8 EIDE hard drives to the 4 EIDE UDMA-133 channels that support hot swap, Global hot spare and hot expansion. In addition, you can connect 2 EIDE optical devices or tape drives to the independent EIDE UDMA-100 channel for backup purpose.
Is there any capacity limitation of hard disk drives connected to NAStorage?

NAStorage has to connect a minimum HDD capacity that is over 10GB, the maximum capacity limitation is 2TB. The hard disk drive must have EIDE interface and ATA compliant

Does the NAStorage support CD-R/RW and DVD+-R/RW devices?

Yes. NAStorage can burn data on CD-R/RW or DVD+-R/RW discs for backup or archiving

Does the NAStorage support DVD-R/RW and DVD+R/RW devices?

Yes. DVD-R/RW drive and DVD+R/RW drive can be connected with NAStorage. This means DVD+R/RW disc can be burned through DVD+R/RW drive and DVD-R/RW disc can be burned through DVD-R/RW drive. Please refer to the tested drives list to know the model of DVD+R/RW drive or DVD-R/RW drive that are compliant to the NAStorage.

How to operate CD-R/RW devices in NAStorage?

You can find two functions within Admin Home page of NAStorage that are "Writer" and "Loader" for backup or restore data.

The interoperability issue between DVD+R/RW disc and DVD-ROM drive.

DVD+R and DVD+RW discs are the new recordable media standards being introduced to the industry recently. So, it can be predicted that some interoperability issues may occur between this new media and old drives. It is also found that many of the DVD-ROM drives cannot recognize the DVD+R or DVD+RW discs, whether it is burned using NAStorage or a regular PC. However, it is believed that DVD-ROM drive manufacturers will improve the compatibility between DVD+R/RW media and DVD-ROM drives in the near future.

Can I connect CD-R/RW, CD/DVD-ROM and DVD+-R/RW drives to the same IDE channel?

Yes. You can perform data backup (Writer) via CD-R/RW, DVD+-R/RW and restore (Loader) data via CD/DVD-ROM

Can I connect CD/CD-RW/DVD-ROM/DVD+-RW and hard disk drives to the same IDE channel?

No, you can't. As per NAStorage design, you have to connect hard disk drives to IDE channel 1~4 and CD-ROM/CD-RW/DVD-ROM/DVD+-RW drives have to connect to IDE channel 5

Can I connect two hard disk drives to IDE channel 5?

No, you cannot. NAStorage can connect up to 8 hard disk drives to IDE channel 1~4. But IDE channel 5 is designed for connect CD-ROM/CD-RW/DVD-ROM/DVD+-RW drives; you cannot connect any hard drives.

Why will several GB space of a hard disk drive be lost after being initialized in NAStorage?

It is normally caused by the unit transformation problem. The NAStorage always uses 1024 as the basis for calculation; i.e. 1GB=1024MB, and 1MB=1024KB. The hard disk drive manufacturers probably use 1000 as the basis for unit transformation.

Any hard disk capacity limitation in NAStorage?

Minimum disk capacity is 10GB.
Maximum disk capacity is 2000GB

Why did my Western Digital (WD) EIDE 180 GB and 200 GB hard disk drives get dropped from an RAID group of NAStorage after several days or weeks of operation?

The Western Digital (WD) model of 180 GB / 200 GB has a "idle saving power" design in hard drive firmware. This advanced design may sometimes cause a timing error if they are connected in a RAID system. Thus we strongly recommend you to disable the power saving feature of HDD and it will help to make your RAID system more reliable.
Here under is the FAQ that has been captured from WD web site for your reference. "The problem is a result of a feature that reduces idle acoustic noise in desktop drives. This feature can cause a timeout in an IDE RAID environment. To disable the feature, you can run a simple Western Digital utility to turn off a single bit in the drive run-time configuration. Disabling of this feature will NOT impact normal system operations in a RAID environment. No firmware or hardware changes are required."


Peripheral Devices & Adapters

 
Which CD-R/RW devices can be connected to the NAStorage?

Below you will find a list of CD-R/RW drives tested by Tulsient. This list will be updated on a regular basis.

Brand Model Speed
Aopen CRW4850 48X,12X,50X
Aopen CRW3248 32X,12X,48X
ASUS CRW-5224A 52x,24x,52x
HP CD-RW 9500i 12X,8X,32X
LITE-ON LTR-52246S 52X,24X,52X
LITE-ON LTR-48246S 48X,24X,48X
LITE-ON LTR-32123S 32X,12X,40X
Plextor PX-W4824TA 48X,24X,48X
Plextor PX-W1210TA 12X,10X,32X
Plextor Combo PX-320A 20X,10X,40X
RICOH MP7400A 40X,10X,40X
RICOH MP7320A 32X,10X,40X
RICOH MP7163A 16X,10X,32X
RICOH MP7200A 20X,10X,40X
SONY CRX215A1 48X,24X,48X

Which hard disk drives can be connected to NAStorage? Is there any capacity limitation on hard disk drives?

Hard disk drives with an EIDE interface and compliant with the ATA standards (ATA-2, ATA-3, ATA-4, ATA-5, bus speed UDMA-33, UDMA-66, UDMA-100, UDMA-133) can be connected to NAStorage; and there is no capacity limitation on hard disk drives. Below you will find a list of hard disk drives tested by Tulsient. This list will be updated on a regular basis.
Brand Model/Firmware Version Speed Capacity
ExcelStor J240 ATA-100 40G
IBM DTLA-307045 ATA-100 46.1G
IBM DTLA-307060 ATA-100 61.4G
IBM IC35L060A ATA-100 61.5G
IBM DTLA-307075 ATA-100 75G
IBM IC35L120AVVA07-0 ATA-100 123.5G
Maxtor D740X-6L ATA-100 40G
Maxtor 98196H8 ATA-100 81.9G
Maxtor D540X-4G120J6 ATA-133 120G
Maxtor D540X-4G160J8 ATA-133 160G
Maxtor DiamondMax164A250JO ATA-133 250G
Quantum MP-60000AS ATA-100 60G
Seagate ST380021A (v3.05/3.10) ATA-100 80G
Seagate ST340016A (v3.05/3.10) ATA-100 40G
Western Digital WDC 400BB ATA-100 40G
Western Digital WDC 800BB ATA-100 80G
Western Digital WD1000BB-32CHE0 ATA-100 100G
Western Digital WD1200JB-00CRA1 ATA-100 120G
Western Digital WD1200B-00CAA1 ATA-100 120G
Western Digital WD1800JB-00DUA0 ATA-100 180G
Western Digital WD2000JB-00DUA0 ATA-100 200G
Western Digital WD2500JB-00EVA0 ATA-100 250G

Which DVD-ROM drives can be connected to the NAStorage?

Below you will find a list of DVD-ROM drives tested by Tulsient. This list will be updated on a regular basis.
Brand Model Speed
LG GDR-8161B 16x
Lite-On LTD-166S 16x
Plextor COMBO PX-320A 12x
Sony DDU1621 16x

Which IDE interface tape drives can be connected to the NAStorage?

Below you will find a list of DVD-ROM drives tested by Tulsient. This list will be updated on a regular basis.
Brand Type Model Capacity Hardware Compression
Ecrix AME VXA-1i IDE/ATAPI 33/66 GB Yes
OnStream ADR2 ADR2.60ide 30/60 GB No
SONY AIT-1 SDX-420C 35/90 GB Yes
SONY AIT-2 SDX-520C 50/130 GB Yes

Which DVD-R/RW rives can be connected to the NAStorage?
Brand Model Speed
Pioneer DVR-A05 2x,4x,8x,16x,12x,32x
Pioneer DVR-A04 1x,2x,4x,8x,4x,24x
Sony DRU-500A 2x,4x,10x,24x,8x,32x

Which DVD+R/RW drives can be connected to the NAStorage?
Brand Model Speed
RICOH MP5125A 2.4x,2.4x,10x,12x,8x,32x
RICOH MP5120A 2.4x,10x,12x,8x,32x
Sony DRU-500A 2.4x,2.4x,10x,24x,8x,32x
Which PCI interface network adapters can be used in NAStorage?
Below you will find a list of network adapters:
Brand Model Chipset Port Speed Media Type
Intel PRO/1000 MF Server 82545EM 1000 only SX Fiber Optic/LC or LX Fiber Optic/LC
Intel PRO/100 S Desktop 82550GY 10/100 Copper
Intel PRO/1000 F Server TL82543GC 1000 only SX Fiber optic/SC
Intel PRO/1000 XT Server FW82544E 10/100/1000 Copper
Intel PRO/1000 MT Desktop RC82540EM 10/100/1000 Copper
Intel PRO/1000 T Desktop RC82544GC 10/100/1000 Copper
Does NAStorage support SCSI adapters and SCSI TBU's?
Yes NAStorage 8200 supports SCSI Adapters and SCSI TBU's. Please refer the compatibility list of devices supported.
Which SCSI adapters are supported on NAStorage 8200?
Please note that only NAStorage 8200 can support SCSI adapters on the PCI slot.
Brand Model
Adaptec 29160LP
LSI LOGIC LSI20160
Which SCSI TBU's can be connected to NAStorage 8200?
Please note that only NAStorage 8200 supports TBU's for data backup.
Brand Type Model Capacity Hardware Comp.
HP LTO SureStore Ultrium 230 100/200GB Yes
HP DAT SureStore DAT 40 20/40 GB Yes
SONY AIT SDX-700C 100/260GB Yes
TANDBERG Super DLT SDLT 220 110/220GB Yes
 
How to set SCSI ID of SCSI TBU's for connecting to the NAStorage 8200?
You can set the ID to "0" or "1" for connecting SCSI TBU's to NAStorage 8200. NAStorage 8200 only supports two SCSI TBU's, if you set the ID of SCSI TBU's to any other ID number except for "0" and "1", NAStorage 8200 will not recognize the SCSI TBU.
Can I connect SCSI Hard Disk Drives to NAStorage?
No, NAStorage only supports IDE interface hard disk drives.
RAID
 
What is RAID?
RAID stands for Redundant Array of Independent Disks, a subsystem that increases performance and/or provides fault tolerance. For instance, when the hard disk's data is corrupted or destroyed, RAID provides a safeguard function to protect the data's accuracy
What RAID policy does NAStorage support?
NAStorage supports three RAID policies:
RAID 0: Stripe/Span. (2 ~ 8 hard disk drives). It interleaves data across multiple disks for better performance. Safeguard function is not provided in RAID 0.
RAID 1: Mirror. (Multiplication of 2 hard disk drives). It provides 100% duplication of data into paired hard disks. This offers the highest reliability, but doubles the storage cost.
RAID 5: Striped with Rotating Parity (3 ~ 8 hard disk drives). Data is striped across three or more drives. Parity bits are used for fault tolerance.
Can I use RAID 1 and RAID 5 in NAStorage concurrently?
Yes. NAStorage provides the independent RAID group, which means you can group several different RAID groups at the same time in NAStorage
Generally RAID systems use either the hardware RAID controller or the software-only RAID system. Which one does NAStorage use?
NAStorage utilizes an innovative method of RAID management. It is a hardware and software integrated solution, using a patent-pending technology for RAID management and access. This solution can provide more storage capacity while maintaining the RAID performance and improving RAID functionality
While creating RAID, must the hard disk drives installed in NAStorage be of the same brand and size?
Theoretically, the answer is negative. But for the performance concerns, the same brand drives will have the similar characteristics; it will help to maintain the overall performance especially on data exchange.
To have an optimized capacity of a RAID group, the similar size (or even same size) hard disk drives is recommended. For example, if you use one 10GB hard drive and a 60GB hard drive to create RAID 1, only 10GB will be the available storage space instead of 60GB. If you use two 60GB hard drives to create RAID 1 group, the available storage space will be 60GB. Performance wise, this is also a fact, that similar capacity hard drive mostly has identical RPM speed. If the RPM of hard drives are different from each other, they will interfere and affect the overall performance.
Should the hard disk drives be connected onto the same IDE channel while creating a RAID device?
No, you can group any hard disk drives (No Init) that are available on the IDE channels of the NAStorage. In order to gain better performance for RAID device, we will suggest to group hard disk drives located in the different IDE channels. For example, if you have 6 hard disk drives connected to the NAStorage and you want to create two RAID level 5 devices. RAID group A should consist of HD1, HD3, HD5 (all drives connected as "master" devices), and RAID group B should consist of HD2, HD4, HD6 (all drives connected as "slave" devices).
Can a "3-drive RAID-5" be dynamically expanded to "4-drive RAID-5" without losing the existing data?
Yes. NAStorage provides a big and powerful function - "Hot Expansion" now; you can set one hard drive in "Expand" web page for expanding capacity of RAID group. It means that the data stored in the old RAID device will not be lost when you want to increase capacity of storage at no downtime. Dynamically changing the configuration of the RAID device is practicable in NAStorage.
Will the data stored in the non-RAID drive be lost when I include this drive into a new created RAID device?
Before a non-RAID drive is included into a RAID device, it has to be deleted to "No Init" state. This means that it will be formatted before being selected into this RAID device; the data stored in this drive will be lost.
When trying to build a RAID group in NAStorage, why I do not see any available hard disk drive in the "Config RAID" page?
To avoid the user from accidentally including in-use hard disk drives into a RAID device, only the "No Init" (or so-called "Un-used Disks") hard disk drive(s) will be shown in this page for selection. Before you can create a RAID device, these candidate drives have to be deleted to the "No Init" state.
What is the performance difference observed between non-RAID and RAID device?
It is difficult to measure precisely because it depends on several factors like "amount of memory installed", "number of drives included in the RAID device", etc. Generally speaking, the grades of performance should be classified "RAID level 0" > non-RAID > "RAID level 1" > "RAID level 5". And we believe the performance should not be the major consideration to decide whether you should create a RAID device or not; it should depend on your real-world application. According to our in-house test result, the performance difference among RAID level 0, non-RAID, and RAID level 1 is within 5 ~ 10%. But for RAID level 5, the performance drop will be around 15 ~ 25% compared with non-RAID device. That is because RAID 5 service will consume more physical memory and CPU power for calculation.
Should more memory be installed onto NAStorage when RAID groups are used?
For creating RAID group in NAStorage, we suggest at least 128MB add-on memory for the operation of RAID group
Can I adjust the "strip size" in the RAID 0 or 5 groups of NAStorage?
No, the RAID feature of the NAStorage does not provide a parameter to adjust the strip size.
Does NAStorage support "Hot Swap" function?
Yes, NAStorage operates with Tulsient-approved mobile racks to provide the hot-swap and other related function for all hard drives
Is "Hot Spare" function supported by NAStorage?
Yes, you can configure any "Unused Disk" drive as a "Hot-Spare Disk".
Can you explain "Global Hot Spare" briefly?
NAStorage uses the hot-spare disk(s) to recover a RAID group automatically and immediately when a RAID group is degraded with a bad disk. It ensures data protection and availability. The hot-spare disks in NAStorage are global because they are not associated with any specific RAID group. Any RAID group in NAStorage getting degraded, a hot-spare disk will be consumed immediately to recover that RAID group.
What is the "Hot Expansion" function? On what occasions can it be used?
The hot-expansion function is used to enlarge the capacity of a RAID group without shutting down the system. With the hot-swappable HDD's and RAID hot-expansion, it is now possible to expand your storage capacity on demand while getting the maximum system uptime.
For example, assume that you only need 480GB of storage capacity. You can connect five 120GB HDD's to NAStorage and create a RAID-5 group. A year later, 480GB might not be enough and you will need 240GB more. At this time, you just plug in two 120GB HDD's to NAStorage and join them into that RAID-5 group. You will get a RAID group with the capacity of (480GB + 240GB) = 720GB. All this is done while the system is still on-line.
What will happen if there is a power loss while writing data to NAStorage?
The data will probably be lost and the file system corrupted because some files may still be kept open and not correctly closed before the system shuts down. If this happens, NAStorage will perform a detailed file system checking process at the next reboot to avoid corruption in the file system and to maintain the data integrity of the damaged files
What will happen to the existing RAID groups at a restart that had a power loss in the rebuilding state?
When RAID group is still in the rebuilding state, once the power is lost or reboot. NAStorage will continue previous rebuilding percentage to rebuild RIAD group
Data Accessing
 
How can the users access (read/write) data from the NAStorage?
You can manipulate the standard browsing tools coming with the OS such as Microsoft Explorer, File Manager, etc. to locate and access data from "shares" of the NAStorage. Before you want to access data from the NAStorage, please make sure you have permission to do this
Can the user remove the "share" from the NAStorage by using a standard OS tool like Microsoft Explorer?
No, the user cannot remove the whole shares of the NAStorage by using a standard OS tool (such as Microsoft Explorer). But the user can still delete files/folders located underneath the share by using Microsoft Explorer if he has the permission to do this. If the share of the NAStorage has to be removed, the system administrator has to get into the HTTP administration page to delete it.
Can the NAStorage behave like a stand-alone server without the existence of another file server?
Yes, when NAStorage works in Microsoft, Macintosh, UNIX and HTTP network environments, the NAStorage behaves like a stand-alone server
I can open a share in the NAStorage, but sometimes I cannot find this share from the Internet Explorer. Why?
This is because the web browser may have "cache" for this page. You just need to click the "Refresh" button of the web browser and the updated content will be displayed.
 
Which web browser does the NAStorage support?
NAStorage supports standard web browsers. Below are the most popular web browsers in the market, which NAStorage supports:
. Microsoft Internet Explorer 4.0 or above.
. Netscape Navigator 4.05 or above
What kind of language support does NAStorage provide?
NAStorage provides 11 languages for localized web pages (including user access and administration), meanwhile, NAStorage supports the following code page for file name and administration usage: English and Western European, CJK DBCS, Unicode
How can I configure the web browser to view the web page of the NAStorage in different languages?
First of all, you have to add the language into the language preference list (IE. "Internet option - Languages - Add") and set it as the first priority in the web browser. And then choose the appropriate encoding method to view correct home page of the NAStorage in different languages.
Here are the encoding standards supported by the NAStorage in different languages:
. Chinese (Taiwan) [zh-tw]
. Chinese (PRC) [zh-cn]
. English (United States) [en-us]
. French (France) [fr]
. German (Germany) [de]
. Italian (Italy) [it]
. Japanese [ja]
. Korean [ko]
. Spanish (Traditional Sort) [es]
Can I assign the language other than English to be the names of server, share/volume, and folder/file in the NAStorage?
Yes. NAStorage does support multi-lingual for naming. In order for the NAStorage to work properly under different language versions of Microsoft operating systems, you have to choose the correct "Language (Code Page)" (Server Settings->General in Admin Home page) to work under the specific language environment. Here is the list of the NAStorage supported code pages:
. CP950-Chinese BIG5 for Traditional Chinese
. CP936-Chinese GB for Simplified Chinese
. CP437-DOSLatinUS for English
. CP850-DOSLatin1 for French, German, Italian and Spanish
. CP932-Shift JIS for Japanese
. CP949-Unified Hangul for Korean
. Mac Roman for Macintosh
Can I name a file by using two-byte characters?
Yes. NAStorage supports CJK DBCS code page, therefore, the file name contains two-byte characters (including Traditional Chinese, Simplified Chinese, Japanese, and Korean) will be shown and accessed in NAStorage
Will the NAStorage show me the home pages in different languages when I am using the different language web browsers?
Yes, a specific language home page of the NAStorage will be shown in your different language web browsers. It depends on the language version of web browser installed in your client.
Can I use FTP client software to download/upload data from/to the NAStorage?
Yes. NAStorage supports FTP protocol
Why can't I find NAStorage in "Network Neighborhood" or "My Network Place"?
Within TCP/IP of network environment, if your PC and NAStorage are configured with IP address of different IP segments, you won't find NAStorage in "Network Neighborhood".
There are three solutions for your reference:
1 Set up all of client PC's and NAStorage to register in WINS server, you can use "Find Computer" to find NAStorage.
2. Create "Lmhosts" file in all of client PC's, you can create a relation between client PC's and NAStorage.
3. You can use "DOS Prompt Command" under windows; perform "net use" command to map the shared folder inside NAStorage.
For example:
net use z: \\< Host IP >\< share >, "z:" means, "network disk letter", "Host IP" is NAStorage IP address, "share" is a shared folder name inside NAStorage.

Data Backup
Can I backup and restore data via use of commercial backup software?
The data stored in the file volume of the NAStorage can be backed up over the network to the backup device (such as a tape drive) of the server on which the backup software (such as Veritas) is running and vice versa. The data in the backup device can also be restored to the file volume of the NAStorage over the network.

Is there any limitation when I try to burn a CD in the NAStorage?
In the following situations the recording task might fail on NAStorage:

1.During the recording process, the NAStorage is under a heavy load of network traffic.
2.During the recording process, the same IDE channel's CD-ROM drive is performing a CD insert/eject operation.
If the recording task continuously fails, we strongly recommend you to lower the recording speed or choose better quality CD-R discs.

Can I perform multiple recording tasks simultaneously if I install two CD-R/RW drives into NAStorage?
In order to increase the successful rate of burning CD, the NAStorage does not support multiple recording tasks simultaneously. It will however collect all the requested tasks and complete them one after another.
How does NAStorage handle the repair of the flash system in the event of a crash?
NAStorage has the feature of system configuration backup/restore function to protect the system configuration from system crash
SmartSync
 
What is SmartSync? When to use it?
SmartSync is a backup option inside NAStorage, and its main use is Remote data Synchronization. It is used when there are NAStorage set up on both local and remote areas. We create a synchronous connection of data stream between the matching volumes or folders on the two servers, enabling the synchronization of data on both sides. The benefit is that SmartSync allows the remote backup of large amount of data stored on the NAStorage servers, ensuring the security of the data.
What are the needed components of SmartSync?
SmartSync consists of at least two NAStorage servers. One is on the client side (synchronizing side), while the other is on the server side (synchronized side). Of course, a connection between the two server ports is necessary.
Is the server on the synchronized side limited to the use of TCP/IP connection?
Yes. TCP/IP is known for its ability to pass through routers and to remotely connect through Internet, as well as its broad adoption and convenience. Therefore, we use TCP/IP as the communication protocol to search for the synchronized server.
How many tasks can SmartSync perform at the same time?
Each NAStorage can perform 8 tasks simultaneously, including immediate and scheduled ones.
However, we do not recommend running too many tasks at the same time, since running more tasks means more system resources are required as well as network bandwidth. This will greatly affect the performance of NAStorage and the network.
Why has the data stream to be compressed when transferring data?
Normally, when doing the data transfer, the network bandwidth is the bottleneck, not the processing power of the system itself. By compressing the data stream, the loading on the network bandwidth and the devices is reduced. Therefore compressing the data stream during data transfer will increase the efficiency of SmartSync, especially for the performance of Wide Area Network (WAN).
What requires to be considered when setting up Bandwidth Control? Why?
If we do not control the bandwidth for the data stream when SmartSync is performing its tasks, the synchronous connection may occupy a lion share of the whole network bandwidth, making the server or network unable to provide other services to the clients at good performance, especially those at the remote network area.
Although most enterprises are now using broadband connections, they normally provide various services using these connections. To prevent SmartSync from occupying too much of the network bandwidth, it is recommended to set up Bandwidth Control during execution of the tasks. Some parameters to be considered are:
1. The total bandwidth and the distribution of bandwidth that the enterprise has in its network environment.
2. The frequency of accesses by the clients and the number of clients served by NAStorage.

What does Quick Synchronization mean?
When SmartSync is performing the second task, we can choose the Quick Synchronization option.
By selecting this option during synchronization, SmartSync will first check the file lists on both the source server and the destination server. Then, it checks the modify time and file size of those files. If the results of both items are identical, the system will simply bypass the synchronization of those sets of files and step to the next set of files. Thus it reduces the loading on the network bandwidth and processing time.
What solutions for remote backup does NAStorage currently provide?
NAStorage's solution for remote backup is SmartSync.
Just like other NAS storage systems in the market, the current synchronization mode is remote mirroring. That is the client-side server can use SmartSync to make a mirrored image on the server side to achieve remote backup.
Does SmartSync support data synchronization from desktop to NAStorage?
SmartSync currently supports data synchronization only from NAStorage to other NAStorage servers. We may consider implementing data synchronization from Windows platform to NAStorage at a later stage
What is the minimum hardware required by SmartSync?
Because SmartSync is a resource-consuming task, NAStorage requires at least 256MB add-on RAM.
Sometimes the SmartSync task will be terminated by a reason "Memory Low", what's the possible cause?
Because SmartSync is a memory-consuming operation, memory utilization rate is critical when launching this task. When NAStorage detects the free memory is low, the program will terminate the synchronization task. To avoid this situation, we suggest checking of the following configuration or timing before launching SmartSync task.
1. Add-on RAM. 512 MB is suggested while 256 MB is minimum.
2. Set the SmartSync task to perform at non-rush hour to avoid memory conflict with routine network services.
3. Set a proper SmartSync source path. If the SmartSync source includes up to millions files/directories, that will occupy most of the memory capacity when creating the check list, it is suggested assigning the source path in multiple sub-directory in different tasks
What protocol is used for SmartSync? Is it CIFS/SMB, FTP or NFS network protocols?
SmartSync does not use CIFS/SMB, FTP or NFS as its communication protocol. It is based on SSL over TCP/IP. This also means SmartSync has its own security policy and won't reference to SMB, FTP or NFS security setting.
Which part of NAStorage will be mirrored to SmartSync Point? Data, Share Setting, ACL setting or User database?
SmartSync feature focuses on "Data" part remote backup. Thus only Data and ACL setting in the Data will be synchronized to remote servers, it does not synchronize User database and Share setting information to the SmartSync point. (NAStorage provides an advanced feature to Backup/Restore system configuration/User Database/Share setting in Backup -> System Profiles page).
Network connectivity
 
NAStorage supports which network topology?
Ethernet. NAStorage is equipped with network adapter of dual 10BaseT/100BaseTX Fast Ethernet auto-sensing/auto-negotiation. It also supports fail-over. In addition, an optional Ethernet Gigabit/Fiber Gigabit NIC can be added onto NAStorage to enhance network performance
Can NAStorage get the IP address automatically?
Yes, NAStorage supports the DHCP protocol, which can assign IP address automatically from DHCP server. Therefore, NAStorage will be assigned with an IP from DHCP server
What benefits are available from the dual NIC?
The dual NIC in NAStorage can provide load-balance function to relieve network traffic. In addition, the dual NIC also provides the fail-over function to ensure consistent network connectivity
How many network operating systems are compliant with the NAStorage?
Please refer to below list:
Network Type Server Emulation Protocol Network File Sharing Protocol
Internet/Intranet HTTP TCP/IP HTTP
Macintosh Mac OS 8.x/9.x/10.x AppleTalk, TCP/IP AFP,CIFS/SMB
Microsoft Windows TCP/IP CIFS/SMB
Unix/NFS Unix server with NFS daemon installed TCP/IP NFS
Can Macintosh clients access data directly from the NAStorage through network?
AppleTalk (Apple Share), TCP/IP (Apple Share IP), and Hierarchical File System (HFS) are all supported by the NAStorage. Macintosh clients can use the "Network Browser" and the "Chooser" to locate, mount or access (read/write) data directly from the shares/volumes managed by the NAStorage
Does NAStorage support NetWare environment?
No. Presently NAStorage does not support NetWare environment
Can clients of different operating systems access data from NAStorage at the same time?
Yes, NAStorage support multiple communications and file sharing protocols. This means that the data stored in NAStorage can be accessed through multiple OS platforms at the same time.
Is NAStorage compliant with Microsoft Distributed File System (DFS)?
Yes, share volume of the NAStorage can be redirected to the DFS root of Windows NT/2000 with DFS service installed
Volumes & Shares
 
What is meant by "Volume" in the NAStorage?
"Volume" is the basic storage unit for the system administrator to manage data stored in the NAStorage. The types of "Volumes" hosted by the NAStorage include JBOD and RAID group.
What is "JBOD"?
JBOD ("Just a Bunch Of Disks", or sometimes "Just a Bunch Of Drives") is used to refer to a computer's hard disks that haven't been configured according to the RAID. It means NAStorage can configure each hard disk drive to JBOD and create it to a volume, after that NAStorage will have 8 volumes for use.
What is meant by "Share" in the NAStorage?
According to the network file sharing protocol, "Share" is the minimum network resource unit exposed onto the network. You can share one volume of NAStorage directly; otherwise when you create some folders in a volume of NAStorage, you also can select some folders and then share them onto the network
Does the NAStorage supports folder level sharing?
Yes. In addition to supporting share a volume onto the network, NAStorage also supports sharing of a folder onto the network.
How many shares can be managed by the NAStorage and exposed to the network?
Up to 255 shares can be managed by the NAStorage and exposed to the network.

Security
 
Does NAStorage support "file level" security control?
NAStorage can set security permission via ACL (Access Control List) and applicable to shared folders and files
Does NAStorage support Active Directory Service?
NAStorage can integrate with ADS environment security policy.
1. Pick up the AD users/groups from the root or branches of AD tree for permission assignment to NAStorage's resource.
2. Perform username/password checking with root or branches of AD user database while the AD users are trying to access NAStorage's resource.
Regarding the configuration steps, please refer to the FAQ title: How do I integrate NAStorage with Windows NT (PDC) or 2000 (ADS) domain security?
How many nodes of ACL are applicable in the NAStorage?
NAStorage provides 8,192 nodes for ACL setting access control of client.
How many user accounts can be stored in user database of the NAStorage?
Up to 8,192 accounts information can be stored in the NAStorage, which include local accounts and domain accounts
How do I integrate NAStorage with Windows NT (PDC) or 2000 (ADS) domain security?
You can go through the steps as recommended below to integrate the NAStorage with Microsoft Windows domain security:
Go to "Windows" option in "Network" of the NAStorage Admin Home page.
2. Change to "Domain Model" and assign a Domain Name.
3. Apply the settings and reboot the NAStorage.
4. Go to "Account" option in "Security" of the NAStorage Admin Home page then select "Domain Account".
5. Click "Modify" button and assign an NT domain account to retrieve user/group information from NT domain.
6. Assign appropriate "Authorized" users/groups accounts then click "Apply" button.
When you complete the above steps, the authorized accounts will appear in "Share Permission" list of each shared volume/folder, you can assign member of "Unselected" list and set permission (No Access, Read only or Read/Write) to the "Privileged" list for security control purpose.
Can I assign NT local group to the permission list of the share volume?
No, only the NT global group can be retrieved from NT domain and assigned to the authorized list of the domain account
 
Can I use anonymous to logon the NAStorage via FTP?
Yes. NAStorage allows you to logon using anonymous. This function can be disabled in Admin Home page.
How does the NAStorage perform security control under FTP?
. Access control can be set in "Allow file download only" or "Allow file upload and download"
. Security policy can be set in "Local account authentication" or "Local and domain account authentication"
. You can set "ACL" nodes to secure any folder or file under the tree of "Home Directory"
. You can set "User limit" for controlling the number of user's to get connected.
. You can appoint the "Home Directory" as logon root directory
How does the NAStorage rebuild the file system if power fails?
NAStorage uses the journaling file system that is capable of fast rebuild for file system from system failure
Can NAStorage integrate user accounts that are stored in "Trust Domain"?
Yes, you can find a Pull-Down menu in "Domain Account" settings page, you can select any trust domain for integrating these user accounts.
Why can't I add an user account to NAStorage user database through mouse right-click (Windows native tools)?
Only the accounts that were in Admins group member can add user account to NAStorage user database through mouse right-click. If the login account was not belonging to Admins group, although the login account had full control (FC) permission, he can only see and modify permission, but cannot add any user account to NAStorage user database.
Power Management
 
Does NAStorage support UPS systems?
Yes, NAStorage can integrate with UPS power management via smart signaling. NAStorage can connect APC Smart Serial UPS in current state. For model details, please refer the APC web site Smart-UPS section.
What type of switching power supply is recommended to connect the NAStorage?
An ATX switching power supply is recommend with the NAStorage because the features of controlling ATX power supply have been included in the hardware and firmware of the NAStorage.
What are the power rating specifications for the ATX power supply?
The ATX power supply unit with more than 350 watt is recommended for NAStorage. Especially, the peak current of 12 Voltage needs to be over 22 A. For instance, the spin-up current of HDD will be 2800 mA when 8 HDD's are connected with NAStorage. The peak current can reach over 22.4 A (2800 mA X 8). To avoid the situation, in which the HDD can't be mounted, it is suggested to use power supply with recommended specifications.
What power management features does the NAStorage support?
The NAStorage has supported the following outstanding features on power management when an ATX power supply is installed. For example, "UPS control to shutdown", "Safe Shutdown", "Schedule Shutdown", and "Schedule Power ON".
Which model of APC Smart series UPS can be connected to NAStorage?
Please go to www.apc.com under product / UPS. You will see Smart-UPS and Smart-UPS XL series. This is what NAStorage supports because they use the same protocol. The model numbers change at certain time interval. Customers can also go to this site for the exact model they require.
How soon do we need to replace the broken cooling fan before it may cause the system to overheat?
The NAStorage has redundant hot-swap cooling fans installed in the back of system (in model NAStorage 8100T and 8100R). Actually only one cooling fan is good enough to handle the heat issue of system. The system can still function normally when one of the cooling fans is malfunctioning and the other is functioning. So there is enough time to hot-swap the broken one. But system needs to be safely shutdown as soon as you can if both cooling fans are dead.
Event Log & Notification
 
Does the NAStorage support "email notification"?
Yes, NAStorage can set up one IP address of SMTP server and two e-mail accounts for email notification
Does the NAStorage support SNMP protocol for sending traps to the administrator?
Yes, you can manipulate the NMS software (Eg.: HP OpenView) to receive relative traps
What is "Web Reminder"?
When any critical event occurs on the NAStorage, you will find a message "There are critical events. Please Check Web Reminder page." in Admin Home page. The reminder is for the administrator to quickly check these critical events.
How can I send an email event to administrator?
You can follow the steps below to set up an email event:
1. Go to NAStorage Admin Home page and select "Network Settings".
2. Select the sub menu "Email".
3. Enable SMTP Protocol.
4. Fill in correct SMTP server IP address or Fully Qualified Domain Name (FQDN).
(* If you fill in FQDN, please make sure you had set DNS server IP address inside NAStorage.)
5. Fill in a legal user account for the purpose of login to the SMTP server.
6. Based on your need; fill in one or two Email Address.
7. Click "Apply" then select "Event" menu to configure further settings.
8. Click "Advance" button in "Configuration" sub menu of "Event".
9. Enable "Email Alert".
10. Check "Event List for Notification" to decide which events can be sent to administrator via email.
11. Click "Apply" button to complete settings.
How can I send Traps to my NMS?
You can follow the steps below to configure:
1. Go to NAStorage Admin Home page and select "Network Settings".
2. Select the sub menu "SNMP".
3. Enable SNMP Protocol.
4. Fill in your server IP address (with NMS installed) that you want to receive traps then make sure the "Trap" column is set to "YES".
5. Click "Apply" then select "Event" menu to configure further settings.
6. Click "Advance" button in "Configuration" sub menu of "Event".
7. Enable "SNMP Trap".
8. Check "Event List for Notification" to decide which events can be sent to NMS via trap.
9. Click "Apply" button to complete settings
   
   



 
 

 
 

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