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Thecus N4100PROThecus Technology N4100PRO NAS server - Serial ATA-300

Gigabit EN

With powerful RAID options, a built-in LCD, and vastly improved data throughput, the N4100PRO ups the ante once again with increased usability, functionality, and performance. Powered by the AMD Geode LX800 processor, the N4100PRO delivers the raw horsepower required to transfer files quickly and efficiently. With updated hardware and a ton of performance improvements, the data transfer speed of N4100PRO doubles that of the original N4100! Four 3.5" SATA hard disk bays enable up to 4TB of s... Read more
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Manual

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Thecus N4100PRO, size: 4.2 MB

 

Thecus N4100PRO

 

 

User reviews and opinions

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Comments to date: 2. Page 1 of 1. Average Rating:
DewiBJones 4:40pm on Friday, June 11th, 2010 
i would love to be able to make a second raid or use extra disks as single drives. out of the 6TB i install only have 1 raid with 1. strongly recommend a UPS to be attached to it so in case of a short power failure the system has time to safely shut down. Extremely useful box. Thecus Tech support was decent enough to answer questions, but lack in trouble shooting setup issues.
ameoba 12:37am on Tuesday, March 30th, 2010 
it helps to have a decent background in networking to understand some of the concepts. 4tb of formatting Raid 1 took a long time.

Comments posted on www.ps2netdrivers.net are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.

 

Documents

doc0

Printer Server

With the N4100PROs Printer Server, you can easily share an IPP printer with other PCs connected to your network. To set up the Printer Server, refer to Chapter 5: Additional Feature Setup > Printer Server.
Superior Power Management
N4100PRO supports schedule power on/off. With this feature, administrator can set at what time to turn on or off the system. This feature is a big plus for people who want to conserve energy. Wake-On-LAN enables administrator to remotely turn on the system without even leaving their own seat. To schedule system on and off, refer to Chapter 4: System Management > System Settings > Reboot and Shutdown System > Scheduled Power On/Off.

Package Contents

Your N4100PRO package should contain the following items: QIG CD-Title Ethernet Cable Screw Kit Please check to see if your package is complete. If you find that some items are missing, contact your dealer.

Front Panel

The N4100PROs front panel displays the units array of status LEDs and is also where youll find the power buttons. See the table below for a detailed explanation of each:

Item HDD Trays

Power LED Busy LED
WAN LED LAN LED Error LED Power Button
Description There are four hard disk drive (HDD) trays. Each tray supports a 3.5-inch SATA HDD. The trays have locks for added physical security and keys are provided with the package. Solid blue: N4100PRO is powered on Blinking orange: system startup or maintenance; data inaccessible Off: system startup complete; system operating normally Solid green: network link Blinking green: network activity Solid green: network link Blinking green: network activity Solid red: system error detected Power on/off N4100PRO

Hard Disk Tray

The N4100PROs hard disk trays each have a lock, a latch, and two indicators.
Item Lock Latch HDD Power LED Access/Error LED
Description The tray lock lets you physically secure the HDD with accessory keys. Use the latch to open and remove or close and secure the tray. Solid blue: HDD is powered on Blinking yellow: data is being accessed Blinking red: hard disk error

Rear Panel

The rear panel of the N4100PRO houses the USB and Ethernet connections, as well as the power connector. See the table below for descriptions of each:

Moving your cursor over any of these items will display the dropdown menu selections for each group. In the following sections, you will find detailed explanations of each function, and how to configure your N4100PRO.

Language Selection

The N4100PRO supports multiple languages, including:
English French German Italian Traditional Chinese Simplified Chinese Japanese Korean Spanish
On the menu bar, click Language and the Change Language screen appears. This screen allows you to select preferred language for the N4100PRO. Press Apply to confirm your selection.

Status Menu

The Status Menu on the menu bar allows you to see various aspects of the N4100PRO. From here, you can discover the status of the N4100PRO, and even find out other details like firmware version and up time.

Product Information

Once you login, you will first see the basic Product Information screen providing Manufacturer, Product No., Firmware Version, and Up Time information.
Product Information Item Manufacturer Product No.
Description Displays the name of the system manufacturer. Shows the model number of the system.

Firmware version Up time

Shows the current firmware version. Displays the total run time of the system.
To access this screen again, navigate to Status > About.

System/Service Status

From the Status menu, choose the System item, and the System Status and Service Status screens appear. These screens provide basic system and service status information.
System Status Item CPU Loading (%) System Fan Speed Up Time Service Status Item AFP Status NFS Status SMB/CIFS Status FTP Status Media Server Nsync Status UPnP Status
Description Displays CPU workload of the N4100PRO. Displays the current status of the system fan. Shows how long the system has been running.
Description The status of The status of The status of The status of The status of The status of The status of

Migrating a RAID

Once a RAID volume has been created, you may want to move it to other physical drives or change the RAID array all together. To migrate a RAID 0, RAID 1, or RAID 5 volume, follow the steps below: 1. From the RAID Configuration screen, click Migrate RAID. 2. A list of possible RAID migration configurations will be listed. Select the desired migration scheme and click OK. 3. The system will begin migrating the RAID volume.
Migrating a RAID volume could take several hours to complete
Below is a table listing of possible RAID migration schemes: To RAID 0 From [RAID 0] HDDx2 to [RAID 0] HDDx3 [RAID 0] HDDx2 to [RAID 0] HDDx4 [RAID 0] HDDx2 to [RAID 0] HDDx5 [RAID 0] HDDx3 to [RAID 0] HDDx4 [RAID 0] HDDx3 to [RAID 0] HDDx5 [RAID 0] HDDx4 to [RAID 0] HDDx5 [RAID 1] HDDx2 to [RAID 0] HDDx2 [RAID 1] HDDx2 to [RAID 0] HDDx3 [RAID 1] HDDx2 to [RAID 0] HDDx4 [RAID 1] HDDx2 to [RAID 0] HDDx5 X [RAID 0] HDDx2 to [RAID 5] HDDx3 [RAID 0] HDDx2 to [RAID 5] HDDx4 [RAID 0] HDDx2 to [RAID 5] HDDx5 [RAID 0] HDDx3 to [RAID 5] HDDx4 [RAID 0] HDDx3 to [RAID 5] HDDx5 [RAID 0] HDDx4 to [RAID 5] HDDx5 [RAID 1] HDDx2 to [RAID 5] HDDx3 [RAID 1] HDDx2 to [RAID 5] HDDx4 [RAID 1] HDDx2 to [RAID 5] HDDx5 [RAID 5] HDDx3 to [RAID 5] HDDx4 [RAID 5] HDDx3 to [RAID 5] HDDx5 [RAID 5] HDDx4 to [RAID 5] HDDx5 RAID 5

RAID 0

RAID 1

RAID 5

Deleting a RAID
To delete a RAID volume, follow the steps below: 1. On the RAID List screen, select the RAID volume by clicking on its radio button, and click RAID Config to open the RAID Configuration screen. 2. On the RAID Configuration screen, click Remove RAID.
3. The confirmation screen appear, you will have to input Yes with exactly wording case to complete Remove RAID operation
WARNING Folder Management
Removing RAID destroys all data in the current RAID volume. The data is unrecoverable.
From the Storage menu, choose Folder, and the Folder screen appears. This screen allows you to create and configure folders on the N4100PRO volume.
Folder Item Folder name Description NFS Share ACL Edit Del Add
Description Displays the name of the folder. Provides a description of the folder. Press NFS Share to configure which hosts on the network are allowed to access this folder using NFS. Press ACL (Access Control List) to configure which users have access to this folder. Press Edit to enter the Edit screen and modify the folders name and description. Press Del to delete the folder. A prompt appears asking to confirm the deletion. Press Add to enter the Add Folder screen.

A DHCP server can be configured to assign IP addresses to devices connected to LAN ports.
WLAN DHCP Configuration Item Description DHCP Server Select to enable or disable DHCP server. Start IP Specifies the starting IP address of the DHCP range. End IP Specifies the ending IP address of the DHCP range. DNS Server Specifies the DNS server IP address.

NOTE NOTE

The IP Segment of WLAN, WAN and LAN should not overlap.
Users should obey the international RF regulatory rules as they set up the wireless RF channel on the N4100PRO. The RF operating channels for different regions have been specified as following. Thecus has no responsibility for users attempting to violate the international RF regulation. 4 N. America Japan Europe (ETSI) Spain France
AFP (Apple Network Setup)
From the Network menu, choose the AFP item, and the AFP Configuration screen appears. This screen displays the configuration items for the Apple Filing Protocol. You can change any of these items and press Apply to confirm your settings. A description of each item follows:
Apple Network Configuration Item Description AFP Server Enable or disable Apple File Service to use the N4100PRO with MAC OS-based systems. Zone Specifies Zone for Applet Talk service. If your AppleTalk network uses extended networks and is assigned with multiple zones, assign a zone name to the N4100PRO. If you do not want to assign a network zone, enter an asterisk (*) to use the default setting.

NFS Setup

From the Network menu, choose the NFS item, and the NFS Server Setting screen appears. The N4100PRO can act as an NFS server, enabling users to download and upload files with the favorite NFS clients. Press Apply to confirm your settings. A description of each item follows:
NFS Server Setting Item NFS Apply Cancel
Description Enable or Disable NFS support. Click Apply to save your changes. Click Cancel to abandon your changes.
User and Group Management
The N4100PRO has built-in user database that allows administrators to manage user access using different group policies. From the Accounts menu, you can create, modify, and delete users, and assign them to groups that you designate.

Local User Configuration

From the Accounts menu, choose the Users item, and the Local User Configuration screen appears. This screen allows you to Add, Modify, and Delete local users.
Local User Configuration Item Description Add Press the Add button to add a user to the list of local users. Modify Press the Modify button to modify a local user. Delete Press the Delete button to delete a selected user from the system.

Adding Users

1. Click on the Add button on Local User Configuration screen, and Local User Setting screen appears. 2. On the Local User Setting screen, enter a name in the User Name box. 3. Enter a User ID number. If left blank, the system will automatically assign one. 4. Enter a password in the Password box and re-enter the password in the Confirm box. 5. Select which group the user will
belong to. Group Members is a list of groups this user belongs to. Group List is a list of groups this user does not belong to. Use the << or >> buttons to have this user join or leave a group. 6. Press the Apply button and the user is created.

Modifying Users

All users are automatically assigned to the users group.
1. Select an existing user from the Local User Configuration screen. 2. Click on the Modify button, and Local User Setting screen appears. 3. From here, you can enter a new password and re-enter to confirm, or use the << or >> buttons to have this user join or leave a group. Click the Apply button to save your changes.

Deleting Users

1. Select an existing user from the Local User Configuration screen. 2. Click on Delete button and the user is deleted from the system.
Local Groups Configuration
From the Accounts menu, choose the Groups item, and the Local Groups Configuration screen appears. This screen allows you to Add, Modify, and Delete local groups.
Local Groups Configuration Item Description Add Press the Add button to add a user to the list of local groups. Modify Press the Modify button to delete a selected group from the system. Delete Press the Delete button to delete a selected group from the system.

Adding Groups

1. 2. 3. 4. On the Local Group Configuration screen, click on the Add button. The Local Group Setting screen appears. Enter a Group Name. Enter a Group ID number. If left blank, the system will automatically assign one. 5. Select users to be in this group from the Users List by adding them to the Members List using the << button. 6. Click the Apply button to save your changes.

Description Displays the name of the module. Displays the module version. The description of the module. Displays whether the module has been enabled or not. Displays the status of the module. Click to uninstall the module. Click to enable a module. Click to look for updates for the selected module. Location of the module file. Click to browse the folder of your PC to locate the module files. Click to install the listed module into your N4100PRO
Modules can potentially harm your system. Only install modules from your vendor, or publishers you can trust.
Reset to Factory Default Settings
From the System menu, choose the Factory Default item and the Reset to Factory Default screen appears. Press Apply to reset the N4100PRO to factory default settings. Press Cancel to go back to the main menu.
Resetting to factory defaults will not erase the data stored in the hard disks, but WILL revert all the settings to the factory default values.
Upgrading System Firmware
From the System menu, choose the Firmware Upgrade item and the Firmware Upgrade screen appears. Follow the steps below to upgrade your firmware: 1. Use the Browse button to find the firmware file. 2. Press Apply. 3. The beeper beeps and the Busy LED blinks until the upgrade is complete.
The beeper only beeps if it is enabled in the System Notification menu. Check Thecus website for the latest firmware release and release notes. Do NOT turn off the system during the firmware upgrade process. This will lead to a catastrophic result that may render the system inoperable.
Change Administrator Password
From the System menu, choose the Administrator Password item and the Change Administrator Password screen appears. Enter a new password in the New Password box and confirm your new password in the Confirm Password box. Press Apply to confirm password changes. See the following table for a detailed description of each item.
Change Administrator Item New Password Confirm Password Apply
Password Description Type in a new administrator password. Type the new password again to confirm. Press this to save your changes.

manufacturer for help. 7. Windows will attempt to connect to the printer.
If your printer model is not listed, please contact your printer
8. You can choose to set this printer as the default printer by checking the Set as the default printer box. Click Next to continue.

9. Done! Click Finish.

Download Manager
With the built-in Download Manager, you can have the N4100PRO download HTTP, FTP, and BT files without having full PC powered on. Whats more, you can even schedule your downloads for off-peak hours, ensuring efficient use of bandwidth. To access the Download Manager, go to Network, choose the Download Manager option, and the Download Tasks and Download Schedule windows appear.

Download Tasks Item

Description Click to start the specified task. Click to pause the specified task. Click to delete the specified task. A prompt will appear asking you if you would like to delete the task itself, or the task and all related downloaded files.
Task Type Rate Status Task Type Add Task Enable Refresh
Name of the task. Click to see more information about this task. Type of transfer. Can be HTTP, FTP, or BT. Transfer rate of the task in kilobytes per second (KB/s). DL: Download rate UL: Upload rate Status of the task. Complete: Percentage complete (%) Completed / Total download size Use this dropdown to select the type of transfer. HTTP, FTP, and BT are available. Click to add the kind of task specified beside Task Type. Click to refresh the task list.

Adding an HTTP Task

To add a new HTTP task to the Download Manager, follow these steps: 1. Using the Task Type dropdown, select HTTP and click Add Task.
2. In the HTTP Task window, start by inputting the target URL in the Website URL box. This is the link to the download you want to queue.
3. Next, select the destination folder from the Destination Folder dropdown. This is where the download will reside.
4. Select the maximum download bandwidth from the Max. Download Bandwidth dropdown.
5. Press Apply to add the task.
6. Once added, your download will appear in the list of download tasks. To start the download, simply click the Start icon ( ) and the download will begin.
7. The download status will continually update in the Download Tasks window. To pause the download, click the Pause icon ( ).

Adding an FTP Task

To add a new FTP task to the Download Manager, follow these steps: 1. Using the Task Type dropdown, select FTP and click Add Task.
2. In the FTP Task window, start by inputting the target URL in the FTP File box. This is the link to the download you want to queue.
4. The next step depends if you are using an anonymous login for your FTP download. If you are logging in anonymously, select Anonymous Login and move on to step 5.
If you are required to login with a user name and password, select Username and input your user name and password into the appropriate fields.

5. Select the maximum download bandwidth from the Max. Download Bandwidth dropdown.
6. Press Apply to add the task.
7. Once added, your download will appear in the list of download tasks. To start the download, simply click the Start icon ( ) and the download will begin.
8. The download status will continually update in the Download Tasks window. To pause the download, click the Pause icon ( ).

Adding a BT Task

To add a new BT task to the Download Manager, follow these steps: 1. Using the Task Type dropdown, select BT and click Add Task.
2. In the BT Task window, start by clicking Browse and selecting the torrent file you wish to start.
4. Next, you can select the maximum and minimum number of peers from selecting the counts from the appropriate dropdowns.
5. Next, you can set the maximum download and upload bandwidths from the dropdowns below.
6. Press Apply to add the task. 7. Once added, your download will appear in the list of download tasks. To start the download, simply click the Start icon ( ) and the download will begin.

Deleting Tasks

To delete a task, simply follow the steps below: 1. Click the delete icon ( ) beside the task that you wish to delete. The Delete Task dialogue box will appear. 2. Select Delete Task only if you wish to remove only the torrent file and all transient files, leaving the unfinished download files intact. 3. Select Delete Task and Files if you wish to remove the torrent file and all transient files, and the unfinished download files. 4. Click OK to delete the task. Click Cancel to return to the Download Manager.

Scheduling Downloads

With the Download Manager, you can schedule your downloads to begin at different times of the day. This is useful if you wish to complete your downloads during off-peak hours, reserving your bandwidth for other applications. A table describing the Download Schedule window appears below:
Download Schedule Item Description Scheduler Enable or disable the Download Scheduler. Choose to have the Download Scheduler activate on a daily or Daily/Weekly weekly basis. Start: Day/Hour Specify the start day/hour/minute for the download task. /Minute End: Specify the end day/hour/minute for the download task. Day/Hour/Minute

Thecus Backup Utility also supports MAC OS X. Just copy the Thecus Backup Utility.dmg to your MAC OS X machine and double click to execute it.

Windows XP Data Backup

If you use Windows XP Professional, you can also use the Windows Backup Utility (Ntbackup.exe) to backup your files. If you use Windows XP Home Edition, follow these steps to install the utility: 1. Insert the Windows XP CD into a drive and double-click the CD icon in My Computer. 2. When the Welcome to Microsoft Windows XP screen appears, click Perform Additional Tasks. 3. Click Browse this CD. 4. In Windows Explorer, navigate to ValueAdd > Msft > Ntbackup. 5. Double-click Ntbackup.msi to install the backup utility. Once installed, you can use the Windows Backup Utility by following the steps below: 1. Click Start, and point to All Programs > Accessories > System Tools > Backup to start the wizard. 2. Click Next to skip past the opening page. Choose Backup files and settings from the second page, and then click Next. 3. Select which option you want to back up. 4. Click Next and in the Backup Type, Destination, and Name page, specify a back up location using the Browse button. 5. Find and select the drive that specifies your N4100PRO as your backup destination and click Next. 6. Click Next to display the wizards final page and click Finish to start backing up.
Apple OS X Backup Utilities
Mac OS X does not include any backup software. However, there are a number of backup solutions available for the Mac OS X, including: iBackup, Psyncx, iMSafe, Rsyncx, Folder Synchronizer X, Tri-BACKUP, Impression, Intego Personal Backup, SilverKeeper, and Apple's dotMac Backup utility to name just a few. To find even more freeware and shareware backup utilities to choose from, go to VersionTracker or MacUpdate and search on "backup". 85
Chapter 7: Tips and Tricks

USB Storage Expansion

The N4100PRO supports external USB hard disks through its three USB ports. Once a USB hard disk has been successfully mounted, users can access the files on the USB hard disk under the USBHDD folder. The N4100PRO supports up to 6 USB external storage devices. All file names on the USB disk volume are case sensitive. Before attaching a USB disk drive to N4100PRO, you have to partition and format it on a desktop computer or a notebook first. The attached device will be located at \\192.168.1.100\usbhdd\usb1\1\ where 192.168.1.100 means the IP address of N4100PRO, usb1 stands for the first USB device, and 1 stands for the first partition on disk #1, the USB disk drive. If it is an NTFS partition, NAS users can open or copy files from \\192.168.1.100\usbhdd\usb1\1 but cannot add new files or modify existing files.
If you want to write to an USB storage device, the file system must be FAT32. USB Storage Read Write FAT32 Partition OK OK NTFS Partition OK -

Adding a Spare Disk

With a RAID 1 or RAID 5 volume, you can add a spare disk after the initial RAID is setup. To add a spare disk, follow the steps below: 1. On the RAID Configuration Screen, tick the checkbox of the hard disk you wish to designate as a spare disk. 2. Click Add Spare. The disk will be configured as a spare disk. The system automatically rebuilds the spare disk when one of the disks in the RAID set fails.
Firewall Software Configuration
If you are using a software firewall (i.e. Norton Internet Security) and are having trouble connecting to the N4100PRO, you can try the following steps: 1. Double click the NIS icon on system tray, and then configure the Personal Firewall. 2. On the Programs page, find the SetupWizard.exe and change its permission to "Permit All". If it's not in the program list, use the Add or Program Scan buttons to find it. 3. On the Networking page, manually add N4100PRO IP address (i.e. 192.168.1.100) to the Trusted list.
Replacing Damaged Hard Drives
If you are using RAID 1, RAID 5, RAID 6, or RAID 10, you can easily replace a damaged hard drive in the Thecus N4100PRO while keeping your data secure with the systems automatic data recovery.

Hard Drive Damage

When a hard drive is damaged and data in the RAID volume, the system LCD will display warning message also the system beeps.

Replacing a Hard Drive

To replace a hard disk drive in the N4100PRO: 1. Remove the tray with the damaged hard disk. 2. Unscrew the damaged hard disk and remove it from the tray. 3. Slide a new hard disk into the tray and fasten the screws. 4. Insert the hard disk tray back into the N4100PRO until it snaps into place. You can also lock it with a key if desired. 5. The LED blinks green when the HDD is accessed.

RAID Auto-Rebuild

When using RAID 1, 5, 6, or 10 on the N4100PRO, you can use the auto-rebuild function when an error is detected. 1. When a hard disk fails the system beeps and/or an email notification is sent to specified receivers. 2. Check the LCD to see which disk has failed. 3. Follow the steps mentioned above to replace the failed hard disk. 4. The system automatically recognizes the new hard disk and starts the auto-rebuild sequence to resume its status before the hard disk crash.
Chapter 8: Troubleshooting
Forgot My Network IP Address
If you forget your network IP address and have no physical access to the system, you can find out the IP address by either looking directly onto the N4100PROs LCD panel, or by using the setup wizard to retrieve the IP of your N4100PRO. 1. Start the Setup Wizard, and it will automatically detect all Thecus IP storage products on your network. 2. You should be able to find the IP address of the N4100PRO which you have forgotten in the Device Discovery screen.

Thank you for choosing Thecus!

Appendix C: RAID Basics

A Redundant Array of Independent Disks (RAID) is an array of several hard disks that provide data security and high performance. A RAID system accesses several hard disks simultaneously, which improves I/O performance over a single hard disk. Data security is enhanced by a RAID, since data loss due to a hard disk failure is minimized by regenerating redundant data from the other RAID hard disks.

Benefits

RAID improves I/O performance, and increases data security through fault tolerance and redundant data storage.

Improved Performance

RAID provides access to several hard disk drives simultaneously, which greatly increases I/O performance.

Data Security

Hard disk drive failure unfortunately is a common occurrence. A RAID helps prevent against the loss of data due to hard disk failure. A RAID offers additional hard disk drives that can avert data loss from a hard disk drive failure. If a hard drive fails, the RAID volume can regenerate data from the data and parity stored on its other hard disk drives.

RAID Levels

The Thecus N4100PRO supports standard RAID levels 0, 1, 5, 6, 10, and JBOD. You choose a RAID level when you create a system volume. The factors for selecting a RAID level are: Your requirements for performance Your need for data security Number of hard disk drives in the system, capacity of hard disk drives in the system
The following is a description of each RAID level:
RAID 0 is best suited for applications that need high bandwidth but do not require a high level of data security. The RAID 0 level provides the best performance of all the RAID levels, but it does not provide data redundancy. RAID 0 uses disk striping and breaking up data into blocks to write across all hard drives in the volume. The system can then use multiple hard drives for faster read and write. The stripe size parameter that was set when the RAID was created determines the size of each block. No parity calculations complicate the write operation.
RAID 1 mirrors all data from one hard disk drive to a second one hard disk drive, thus providing complete data redundancy. However, the cost of data storage capacity is doubled. This is excellent for complete data security.
RAID 5 offers data security and it is best suited for networks that perform many small I/O transactions at the same time, as well as applications that require data security such as office automation and online customer service. Use it also for applications with high read requests but low write requests. RAID 5 includes disk striping at the byte level and parity information is written to several hard disk drives. If a hard disk fails the system uses parity stored on each of the other hard disks to recreate all missing information.

RAID 6

RAID 6 is essentially an extension of RAID level 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (dual parity) Data is striped on a block level across a set of drives, just like in RAID 5, and a second set of parity is calculated and written across all the drives; RAID 6 provides for an extremely high data fault tolerance and can sustain two simultaneous drive failures. This is a perfect solution for mission critical applications.
RAID 10 is implemented as a striped array whose segments are RAID 1 arrays. RAID 10 has the same fault tolerance as RAID level 1. RAID 10 has the same overhead for fault-tolerance as mirroring alone. High I/O rates are achieved by striping RAID 1 segments. Under certain circumstances, RAID 10 array can sustain up to 2 simultaneous drive failures Excellent solution for applications that would have otherwise gone with RAID 1 but need an additional performance boost.
Although a concatenation of disks (also called JBOD, or "Just a Bunch of Disks") is not one of the numbered RAID levels, it is a popular method for combining multiple physical disk drives into a single virtual one. As the name implies, disks are merely concatenated together, end to beginning, so they appear to be a single large disk. As the data on JBOD is not protected, one drive failure could result total data loss.

Stripe Size

The length of the data segments being written across multiple hard disks. Data is written in stripes across the multiple hard disks of a RAID. Since multiple disks are accessed at the same time, disk striping enhances performance. The stripes can vary in size. 94

Disk Usage

When all 4 disks are of the same size, and used in RAID, N4100PRO disk usage percentage is listed below:
RAID Level RAID 0 RAID 1 RAID 5 RAID 6 RAID 10 JBOD Percentage Used 100% 20% 80% 60% 50% 100%
Appendix D: Active Directory Basics

This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS

 

Technical specifications

Full description

With powerful RAID options, a built-in LCD, and vastly improved data throughput, the N4100PRO ups the ante once again with increased usability, functionality, and performance. Powered by the AMD Geode LX800 processor, the N4100PRO delivers the raw horsepower required to transfer files quickly and efficiently. With updated hardware and a ton of performance improvements, the data transfer speed of N4100PRO doubles that of the original N4100! Four 3.5" SATA hard disk bays enable up to 4TB of storage, and users can manage this space with an updated list of RAID mode selections, including 0, 1, 5, 6, 10 and JBOD. The N4100PRO also offers advanced RAID management features, including RAID expansion and RAID level migration for ultimate flexibility. To top it off, the N4100PRO comes equipped with a big, bright LCM module, which displays useful status messages such as IP address, date and time, and RAID status, making it easy for users to keep an eye on the condition of their N4100PRO. With features like these, the N4100PRO is easier to manage than ever. Of course, raw performance is nothing without reliability, and the N4100PRO delivers this in spades. On the back of the N4100PRO are two Gigabit Ethernet ports that come with network bonding in fail over mode. With this feature, the N4100PRO can automatically switch to its second Gigabit Ethernet port should the first one fail for any reason. To ensure quality of service, the N4100PRO also comes equipped with link aggregation with 802.3ad and load balancing. The result is a zero network downtime and increased reliability for N4100PRO users. The N4100PRO also brings a huge selection of useful features to the table. To keep multimedia moguls happy, the N4100PRO can act as a media server, iTunes server, and photo web server at the drop of a hat. The included download manager makes it easy to schedule and download BT, HTTP, and FTP downloads during off-peak hours, and IP cam support allows users to turn their N4100PRO into a home surveillance unit. The N4100PRO can mount ISO files and share them across the entire network, and users can even further expand its functionality with module support.

General
Device TypeNAS server
Host ConnectivityGigabit Ethernet
Total Storage Capacity0 GB
Max Supported Capacity4 TB
Installed Devices / Modules Qty0 (installed) / 4 (max)
Width6.6 in
Depth8.8 in
Height7.8 in
Built-in DevicesStatus LCD
Processor / Memory
Processors Installed1 x AMD Geode LX 800
RAM InstalledDRAM 256 MB
Storage Controller
TypeRAID - integrated
Controller Interface TypeSerial ATA-300
Supported DevicesHard drive
Max Storage Devices Qty4
RAID LevelRAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD
Hard Drive
TypeHot-swap
Networking
TypeNetwork adapter
Data Link ProtocolEthernet, Fast Ethernet, Gigabit Ethernet
Network / Transport ProtocolTCP/IP, AppleTalk, FTP, SMB
Remote Management ProtocolHTTP, HTTPS
FeaturesLoad balancing, auto-uplink (auto MDI/MDI-X), manageable
Expansion / Connectivity
Expansion Bays Total (Free)4 internal - 3.5"
Interfaces1 x Ethernet 10Base-T/100Base-TX/1000Base-T - RJ-45 3 x Hi-Speed USB - 4 pin USB Type A
Power
Power DevicePower supply - internal
Power Provided200 Watt
Software / System Requirements
OS RequiredUNIX, Linux, BSD/OS, Apple MacOS X, Microsoft Windows 98/ME/NT/2000/XP
Environmental Parameters
Min Operating Temperature41 °F
Max Operating Temperature104 °F
Humidity Range Operating0 - 80%
Universal Product Identifiers
BrandThecus
Part NumberN4100PRO
GTIN04712505090719, 00884956000716

 

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