Product ID: S352BMU3N
The S352BMU3N 2-Bay NAS RAID enclosure enables you to build a secure external RAID array with two 3.5” SATA hard drives, and connect it directly to your Gigabit network without a host computer for fast network wide access.
For broad device compatibility, this NAS enclosure features WebDAV allowing you to access files from any web browser-enabled device on the network, such as a computer, Tablet, iPhone®, or smartphone. Third party mobile apps are also supported for intuitive and familiar file management.
For hassle-free media integration, the enclosure supports UPnP, and DLNA® allowing you to instantly stream videos, photos, and Music directly to a supporting smart televisions, Blu-Ray /Set-top box, and Video Game Consoles.
To achieve greater performance or secure data redundancy the enclosure features a built-in hardware RAID controller, supporting RAID 0, 1, and JBOD.
For easier file sharing, the enclosure supports FTP and SMB services, enabling you to publicly share files over the network or Internet, with the client software of choice.
Increase speed locally with USB DAS (Direct-Attached Storage), enabling you to connect the enclosure to your computer using USB 3.0 to provide transfer speeds up 5 Gbps.
To ensure compatibility with your computer system, the S352BMU3N supports all of the leading operating systems, including: Microsoft Windows® (8/7/Vista/XP/Server 2008/Server 2003), Apple® OSX (10.9/10.8/10.7/10.6), Linux, and Google Chrome OS™.
The S352BMU3N maximizes both durability and reliability with a built-in fan, solid aluminum construction, and is backed by a StarTech.com 2-year warranty and free lifetime technical support.
|Warranty Information||Warranty||2 Years|
|Connector(s)||Drive Connectors||2 - SATA Data & Power Combo (7+15 pin)|
|Host Connectors||1 - RJ-45|
|1 - USB Type-B (9 pin) USB 3.0|
|Environmental||Operating Temperature||5°C to 35°C (41°F to 95°F)|
|Storage Temperature||-20°C to 50°C (-4°F to 122°F)|
|Humidity||20%RH ~ 80%RH|
|Hardware||Interface||RJ45 (Gigabit Ethernet)|
|Number of Drives||2|
|Compatible Drive Types||SATA|
|Number of internal 3.5 inch bays||2|
|Fans||1 - 40 mm|
|Fan Bearing Type||Ball Bearing|
|Chipset ID||JMicron - JCS358|
|Indicators||LED Indicators||1 - Power|
|1 - Drive 1 Activity|
|1 - Drive 2 Activity|
|Packaging Information||Package Height||181 mm [7,1 in]|
|Package Length||14 cm [5,5 in]|
|Shipping (Package) Weight||1,4 kg [3,0 lb]|
|Package Width||25,5 cm [10,0 in]|
|Performance||Maximum Data Transfer Rate||1000 mbps (Ethernet)
5 Gbps (USB 3.0)
|Type and Rate||USB 3.0 - 5 Gbit/s|
|Type and Rate||SATA III (6 Gbps)|
|Hardware Raid Supported||Yes|
|Supported RAID Modes||RAID 0 (Striped Disks)|
|RAID 1 (Mirrored Disks)|
|JBOD - (Just a Bunch of Disks)|
|Max Drive Capacity||Currently tested with up to 4TB 7200 RPM hard drives|
|Hot Swap Capability||No|
|Physical Characteristics||Weight of Product||627 g [22,1 oz]|
|Product Length||18,0 cm [7,1 in]|
|Product Width||115,5 mm [4,5 in]|
|Product Height||8,5 cm [3,3 in]|
|Power||Power Source||AC Adapter Included|
|Input Voltage||100 - 240 AC|
|Output Voltage||12V DC|
|Output Current||3 A|
|Power Consumption (In Watts)||36|
|Software||OS Compatibility||OS independent; No software or drivers required|
|What's in the Box||Included in Package||1 - NAS HDD RAID Enclosure|
|1 - Ethernet Cable|
|1 - USB 3.0 Cable|
|1 - Universal power adapter: comes ready for NA/EU/UK only when you buy in NA/EU/UK; comes ready for Australia and New Zealand only when you buy in Australia and New Zealand|
|1 - Rubber foot set|
|1 - Quick Install Guide|
Connect your USB 3.0 devices with this high-quality USB 3.0 certified cable
Connect your USB 3.0 devices, with this high-quality USB 3.0 certified cable
Connect USB 3.0 devices, even in hard to reach areas and tight spaces
Replace your lost or failed power adapter
In order to rebuild a RAID array, you need to replace a physical drive with an identical drive on the same RAID controller. Although standard RAID levels are generally agreed upon throughout the industry, the implementation varies between manufacturers. RAID arrays are typically not accessible when they are moved to another controller, and data may be unrecoverable if the drives are out of order or have been formatted or accessed by another RAID controller.
If a RAID controller has failed, you should get the exact same model of RAID controller.
Note: If a drive or drives were damaged, it is possible that the RAID array may be permanently unrecoverable.
RAID should not be considered a replacement for backing up your data. If critical data is going onto a RAID array, you should back up the data on another physical drive or logical set of drives.
With the following RAID modes, recovery is possible using the same StarTech.com product. Refer to the following table for the appropriate method to use to recover your RAID array.
|RAID mode||Max # of failed drives||Procedure|
|RAID 1||Only one drive is needed for recovery.||
The array will rebuild and is accessible during the rebuilding process.
|RAID 3||Single drive failure will rebuild.||
Note: Do not change the order of the drives.
|RAID 5||Single drive failure will rebuild.||
Note: Do not change the order of the drives.
|RAID 10||Only one drive in a mirrored set can fail.||
Note: Do not change the order of the drives.
When you troubleshoot issues with a hard drive enclosure, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
To test your setup components, try the following:
When you test the hard drive and hard drive enclosure, it is recommended that you do the following:
Note: Formatting a hard drive erases all of the data on it. Make sure that you back up all of your data before you reformat the hard drive.
Note: A formatted hard drive will not show up in Computer or My Computer until it has a drive letter assigned to it.
Note: Any data currently on the drives will be lost during this process. You need to back up all of your data before you set a RAID mode.
To set a RAID mode, complete the following:
Note: JBOD is only supported in a DAS (Direct-Attached Storage) connection. If you set JBOD in a NAS (Network-Attached Storage) connection, only one hard drive will be accessible.
Note: When you change the RAID mode again, complete the steps above to set the unit back to JBOD before you set a different RAID mode.
You should not upgrade your device's firmware if you do not have any issues with the functionality of your device. The only time you should consider an upgrade is if you are experiencing a problem with the device, and you have confirmed that the firmware addresses this problem. You can confirm this is the case by reviewing the documentation included with the firmware or by consulting with our Technical Support team. Incorrectly upgrading firmware can result in diminished performance so it is best to contact StarTech.com if you would like to perform this operation.
To confirm that the Mac OS detects your USB device, complete the following:
You may need to refresh the System Information page after you plug in your device. To do so, press Command + R with the System Information page open.
Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.
Note: Not all StarTech.com devices support each of the RAID modes described below. For more information on the RAID modes that your device supports, refer to the manual or the StarTech.com product page.
Redundant Array of Independent Disks (RAID) is a virtual disk technology that combines multiple physical drives into one unit. RAID can create redundancy, improve performance, or do both.
RAID should not be considered a replacement for backing up your data. If critical data is going onto a RAID array, it should be backed up to another physical drive or logical set of drives.
The following are terms that are normally used in connection with RAID:
Different RAID levels exist for different application requirements.
Refer to the following table for the list of RAID modes offered by some StarTech.com products:
|RAID 0||Striped disks||Data is split evenly between two or more disks.||Large size and the fastest speed.||No redundancy.||If one or more drives fails, this results in array failure.|
|RAID 1||Mirrored disks||Two or more drives have identical data on them.||A single drive failure will not result in data loss.||Speed and size is limited by the slowest and smallest disk.||Only one drive is needed for recovery.|
|RAID 3||Striped set with dedicated parity||Data is split evenly between two or more disks, plus a dedicated drive for parity storage.||High speeds for sequential read/write operations.||Poor performance for multiple simultaneous instructions.||A single drive failure will rebuild.|
|RAID 5||Striped disks with distributed parity||Data is split evenly between three or more disks. Parity is split between disks.||Large size, fast speed, and redundancy.||The total array size is reduced by parity.||A single drive failure will rebuild.|
|RAID 10||1+0; Striped set of Mirrored Subset||Four or more drives are made into two mirrors that are striped.||Larger size and higher speed than RAID-1, and more redundancy than RAID-0.||No parity.||Only one drive in a mirrored set can fail.|
|JBOD||Just a Bunch Of Disks||Any number of drives are accessed independently by the operating system.||Software RAID modes can be used.||Hardware RAID may have better performance.||N/A|
|Big||Spanning or Concatenation||Data is written on one drive until it is full, and then the next drive(s) until it or they are full.||Creates a very large and simple array.||
|Clone||RAID 1 + Spare||
Two drives have identical data, plus one drive is used for rebuilding in case of a primary array failure.
|Seamless operation when one drive fails in a RAID-1 array.||Spare drive is not accessible to the user.||Only one drive is needed for recovery.|
Time Machine requires the protocols CIFS (Common Internet File System) and SMB (Server Message Block) to function. When you use this device as a NAS device, these protocols are not supported. If you use this device as a DAS (Direct Attach Storage) device, you can use Time Machine.
To determine if your hard drive will work in this enclosure, on the product page, click the Technical Specifications tab, and do the following:
Check out our review guidelines.