Dual-Slot Drive Enclosure for M.2 SATA SSDs - USB 3.1 (10Gbps) - RAID

Turn two M.2 SATA drives into ultra-fast, portable storage with RAID for increased performance or redundancy

Product ID: SM22BU31C3R

4.7 stars (6 reviews) |
  • Maximize the performance of your M.2 (NGFF) SATA drives with USB 3.1 Gen 2 (10Gbps) connectivity
  • Supports RAID 0, RAID 1, JBOD and SPAN (BIG) for optimal performance, capacity and redundancy
  • Supports all common M.2 SATA SSDs, and enables you to mount multiple drive lengths: 30 mm (2230), 42 mm (2242), 60 mm (2260) and 80 mm (2280)
Your price
€73.99 EUR excl. VAT
€89.53 EUR incl. VAT

This dual M.2 SATA enclosure with RAID makes it easy to add ultra-fast, portable external storage to your USB-C™ or USB-A enabled laptop, tablet, smartphone or desktop computer. Its multiple RAID modes provide increased capacity, improved performance, or data redundancy.

Access your external data at greater speeds

Quickly access, transfer, and backup your files wherever you go. This dual-slot M.2 RAID enclosure enables you to easily access your data by creating a high-performance, ultra-portable storage solution using two M.2 (NGFF) SATA SSDs. It’s ideal for creative professionals, such as photographers and videographers, as well as professionals in corporate, educational and government sectors who need fast access to important data files, while out in the field or back at the office.

The RAID enclosure enables you to leverage the speed of your M.2 (NGFF) SATA drives by taking advantage of USB 3.1 Gen 2, with data transfer rates of up to 10Gbps. It ensures easy access to your files for data migration and data backups so that you can safeguard important data at all times.

Increase performance and data redundancy

With multiple RAID options, the M.2 RAID enclosure enables you to gain increased storage size, performance, or redundancy. You can enjoy the peace of mind of knowing your files are continually backed up, or take advantage of greater speed and capacity offered by a combined solution. The enclosure supports RAID 0, RAID 1, Spanning, and JBOD, enabling you to choose your preferred backup mode. It also supports SSD TRIM to prolong drive lifespan and performance.

Make your data more portable

The dual M.2 SATA enclosure provides a highly portable storage solution. With its compact design, you can tuck it away inside your laptop bag or carrying case and take it anywhere - to the office, the lab, or for mobile use, so that you can access your data wherever you go. Engineered with a solid aluminum housing, the dual-slot M.2 SATA enclosure helps to safeguard your data wherever you go.

The M.2 SATA RAID enclosure is powered directly from the USB port on your device, so no external power is required. It comes with two USB cables (USB-C to Micro-B and USB-A to Micro-B) for flexible use with the latest laptops and tablets equipped with a USB-Type C™ port as well as legacy devices. The enclosure is OS independent, with no additional software or driver installation required, and is compatiIt’s also compatible with a Thunderbolt™ 3 USB-C port. 

 The SM22BU31C3R includes all required drive installation tools and hardware and is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Applications

  • Professionals in a wide range of industries, from corporate to medical fields, can take advantage of high-speed data access for their USB-C or USB-A enabled laptop, tablet, smartphone or desktop computer
  • Mobile professionals can utilize two M.2 (NGFF) SATA SSDs to access, transfer and backup files with faster speeds over USB 3.1 Gen 2 (10Gbps)
  • Re-use or re-purpose M.2 SATA drives to expand PC storage or to back up data
  • Ideal for protecting drives against dust and other potential hazards
  • Access drives for data recovery, backup, or repair

Partner Numbers

  • Ingram Micro España V933937
  • Esprinet SM22BU31C3R
  • UPC 065030870757

Compatibility

  • OS Independent logo
OS independent; No software or drivers required

Specifications

Warranty Information Warranty 2 Years
Connector(s) 2 - Drive Connectors M.2 (SATA, B-Key, NGFF)
1 - Host Connectors USB 3.1 USB Type Micro-B (10 pin, Gen 2, 10 Gbps)
Environmental Operating Temperature 0°C to 60°C (32°F to 140°F)
Storage Temperature -20°C to 70°C (-4°F to 158°F)
Humidity 0% ~ 90% RH
Hardware Interface USB 3.1 Gen 2
Bus Type USB 3.1 Gen 2
Number of Drives 2
Drive Size 22mm - M.2 SATA
Compatible Drive Types M.2 (SATA, B-Key, NGFF)
Drive Installation Fixed
Supported Drive Height(s) 2230
Fan(s) No
Supported Drive Height(s) 2242
2260
2280
Chipset ID ASMedia - ASM1352R
Indicators 2 - LED Indicators Read / Write (green)
Error / Rebuilt (red)
Packaging Information Package Height 32 mm [1.3 in]
Package Length 16.5 cm [6.5 in]
Shipping (Package) Weight 195 g [6.9 oz]
Package Width 13.1 cm [5.2 in]
Performance Maximum Data Transfer Rate 10 Gbps
Type and Rate USB 3.1 Gen 2 - 10 Gbit/s
UASP Support Yes
4Kn Support Yes
Type and Rate SATA III (6 Gbps)
Port Multiplier Yes
TRIM Support Yes
Hardware Raid Supported Yes
Max Drive Capacity 2 TB
Supported RAID Modes RAID 0 (Striped Disks)
RAID 1 (Mirrored Disks)
BIG (Spanning or Concatenation)
JBOD - (Just a Bunch of Disks)
MTBF 35,000
General Specifications Not compatible with M.2 NVMe or AHCI PCI-Express SSDs
Physical Characteristics Color Black
Material Aluminum
Max Drive Height 80 mm [3.1 in]
Product Length 100 mm [3.9 in]
Product Width 80 mm [3.1 in]
Product Height 15 mm [0.6 in]
Weight of Product 96 g [3.4 oz]
Power Power Source USB-Powered
Software OS Compatibility OS independent; No software or drivers required
Special Notes / Requirements Note Windows 7 and earlier Windows versions do not support TRIM with USB to SATA devices.
What's in the Box 1 - Included in Package M.2 SATA enclosure
USB-C to Micro-B cable - 18.5 inches
USB-A to Micro-B cable - 18.5 inches
2 - Included in Package housing assembly screws
sets of M.2 mounting hardware
1 - Included in Package screwdriver
quick-start guide

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Frequently Asked Questions

Troubleshooting

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:

  • Cables
  • Hard drives
  • Hard drive enclosure

To test your setup components, try the following:

  • Use the cables, hard drives, and hard drive enclosure in another setup to see if the problem is with the components or the setup.
  • Use a different cable, hard drive, and hard drive enclosure in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test the hard drive and hard drive enclosure, it is recommended that you do the following:

  • To check Disk Management, press the Windows key + R, type diskmgmt.msc, and press Enter. Check to see if your hard drive is listed.
  • If the hard drive is listed with unallocated space, the hard drive needs to be reformatted. Right-click unallocated and click New Simple Volume. Follow the on-screen instructions to complete the reformatting.​

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.​

  • If the hard drive is listed as healthy but does not have a drive letter, for example, C:, right-click healthy and click Change Drive Letter and Paths. Click Add, assign a drive letter, and click OK.

Note: A formatted hard drive will not show up in Computer or My Computer until it has a drive letter assigned to it.

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.

Rebuild a RAID array

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.
  1. Determine which drive is operational by using the RAID management utility (if available) or test each drive individually on a different hard drive controller (for example, a hard drive docking station or SATA controller).

  2. Replace the failed drive with an identical hard drive.

The array will rebuild and is accessible during the rebuilding process.

RAID 3 Single drive failure will rebuild.
  1. Determine which drive is defective by using the RAID management utility (if available) or with diagnosis LEDs on the controller or enclosure.

  2. Replace with an identical hard drive.

Note: Do not change the order of the drives.

  1. The array may be accessible during the rebuild, but you should let the controller rebuild without interruption so that performance is not compromised.

RAID 5 Single drive failure will rebuild.
  1. Determine which drive is defective by using the RAID management utility (if available) or with diagnosis LEDs on the controller or enclosure.

  2. Replace with an identical hard drive.

Note: Do not change the order of the drives.

  1. The array may be accessible during the rebuild, but you should let the controller rebuild without interruption so that performance is not compromised.

RAID 10 Only one drive in a mirrored set can fail.
  1. Determine which drive is defective by using the RAID management utility (if available) or with diagnosis LEDs on the controller or enclosure.

  2. Replace with an identical hard drive.

Note: Do not change the order of the drives.

  1. The array may be accessible during the rebuild, but you should let the controller rebuild without interruption so that performance is not compromised.

 

If your setup components support USB 3.1 but you are experiencing slower transfer speeds than you expected, consider the following:

  • A USB host connection with multiple USB 3.1 ports might not be able to support 10Gbps on each port simultaneously.
  • The type of port on a device does not determine whether the device is capable of USB 3.1 speeds. A USB-C port might not support USB 3.1 speeds, while USB-A and USB-B ports might support USB 3.1 speeds.
  • Any other devices that you include in your setup, such as an older hard drive in a USB 3.1 enclosure, might create a point of congestion and slow down transfer speeds.

To confirm the functionality of your USB host connection, its ports, and any other devices in your setup, refer to the information provided by the manufacturer.

Note: USB 3.1 is also known as USB 3.1 Gen 2 (10Gbps). Devices that support USB 3.1 should have the USB 3.1 symbol on them. If the USB 3.1 symbol does not appear on your USB source or device, refer to the information provided by the manufacturer to confirm whether the USB source or device support USB 3.1.

Before You Buy

To determine if your hard drive will work in this enclosure, on the product page, click the Technical Specifications tab, and do the following:

  • Make sure that the enclosure supports the storage size of your hard drive. If the storage size of your hard drive is larger than what the enclosure was tested with, the hard drive will likely still work with the enclosure.
  • Confirm that your hard drive uses the same interface type as the enclosure. For example, IDE, SATA, or M.2.
  • Make sure that the enclosure supports the physical size of your hard drive, such as 2.5 inches or 3.5 inches.
  • Make sure that the enclosure supports the height of your hard drive. For example, 9 mm or 15 mm.
  • Verify that the power consumption of your hard drive doesn’t exceed the power output of the enclosure. If you’re using multiple hard drives, make sure that the combined power consumption of all of the hard drives doesn’t exceed the power output of the enclosure.

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:

  • Striping: data is split between multiple disks.
  • Mirroring: data is mirrored between multiple disks.
  • Parity: also referred to as a checksum. Parity is a calculated value used to mathematically rebuild data.

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 mode Description Operation Advantages Disadvantages Recovery
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.

No redundancy.

N/A
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.

 

USB 3.1 is the most recent version of the USB (Universal Serial Bus) standard for connecting computers and electronic devices. It is capable of data transfer speeds up to 10Gbps, and while it can use the USB-C connector type, it can also use a variety of other connector types. To achieve USB 3.1 transfer speeds, your USB host connection, cables, and device must all support USB 3.1. USB 3.1 is also known as USB 3.1 Gen 2 (10Gbps). 

USB 3.0 is capable of data transfer speeds up to 5Gbps. USB 3.0 is also known as USB 3.1 Gen 1 (5Gbps).

USB 3.1 is backwards compatible with USB 3.0 and USB 2.0, except in the following scenarios:

  • USB-B 3.1 cables are not compatible with USB-B 2.0 ports.
  • Unless you use an adapter, USB-C ports or cables will not work with USB-A or USB-B ports or cables.
  • Devices that require USB 3.1 transfer speeds of 10Gbps might not work with USB 3.0 or USB 2.0, or you might experience lower transfer speeds and impacted performance.
  • Bus-powered USB devices that requires more power than what USB 2.0 can provide are not compatible with USB 2.0.

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To transfer data at speeds of 10Gbps, you need to confirm that the following components in your setup support USB 3.1:

  • The USB host connection
  • The USB cable
  • The USB device and any subcomponents (for example, a hard drive docking station and the hard drives in the docking station)

Note: USB 3.1 is also known as USB 3.1 Gen 2 (10Gbps). Devices that support USB 3.1 should have the USB 3.1 symbol on them. If the USB 3.1 symbol does not appear on your USB source or device, refer to the information provided by the manufacturer to confirm whether the USB source or device support USB 3.1.

The included USB cable for this USB 3.1 Gen 2 device has been tested and verified to perform at USB 3.1 Gen 2 speeds of 10Gbps.

Hard Drives

Windows 10 

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, ex-FAT, NTFS, and so on).

Initialize a drive

Note: You typically only need to initialize a drive if the drive is new. If you cannot find an uninitialized drive in Disk Management, skip the following steps and try to partition your device.

  1. Press the Windows key + R, type compmgmt.msc, and click Run to open Computer Management.

  2. Navigate to Disk Management.

  3. When prompted to, initialize your disk(s). If you are running Windows® 7 or later and are using a drive larger than 2TB, initialize the disk(s) with GPT. If you are running an earlier version of Windows, initialize the disk(s) with MBR. For more information, visit the following FAQ: https://www.startech.com/support/faqs/technical-support?topic=hard-drives#mbr-vs-gpt.

  4. Click OK.

Create a partition in a drive

Note: The following steps create an NTFS partition that uses the entire drive space. To use a different file system, select a different option in step 6.

  1. Right-click Unallocated or RAW volume, and select New Simple Volume.

  2. In the New Partition Wizard, click Next.

  3. Select Primary partition.

  4. Leave the partition size set to default, and click Next.

  5. Assign a drive letter or leave it set to the default, and click Next.

  6. Enter the following settings to format the partition:

  • In the File System field, enter NTFS.
  • Set the Allocation unit size to Default.
  • In the Volume label field, enter <your name/reference>.
  • Select the Perform a quick format check box.
  • Clear the Enable file and folder compression check box.
  1. Click Next > Finish.

The new drive should appear in Windows Explorer.

Mac OS

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, HFS+, ex-FAT, NTFS, and so on).

Initialize a drive

Mac OSX detects a drive that needs to be initialized and automatically prompts you to initialize the drive. If you are prompted to initialize the drive, click Initialize. If you are not prompted to initialize the drive and you cannot find the drive in Finder, you will need to create a partition on the drive.

Create a partition on a drive

Note: The following steps create an HFS+ (Mac OS Extended (Journaled)) partition that uses the entire drive space.

To create a partition on a new drive, complete the following:

  1. Open Finder.

  2. Navigate to Applications and click Utilities.

  3. Open Disk Utility.

  4. Select the new drive and click the Partition tab.

  5. Click Options and verify that it is set to GUID Partition Table.

  6. Enter a name for the partition.

  7. Click Partition.

The drive should now be accessible in Finder.

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Compliance and safety

Compliance letters

  • RoHS
    • Language: English
  • WEEE
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(6 reviews)
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(4 Stars)

FAST!

By: nick427 - 05/25/2017
Add drives, flip a couple switches, press a button and it's ready. Easy to assemble, and incredibly fast (especially with RAID0). With dual WD Blue M.2 500GB drives, RAID0, and 66GB folder of files ranging in size up to 4GB): Win10/USB3.0/NTFS: Sustained transfer rates of 325MB/sec. Mac Journaled/USB-C/Macbook(touchbar): 530MB/sec. I've got all my own tools, but assembled the device using the supplied parts, for review purposes. Critiques: a) Nice that a small screwdriver was included, but the screws for the drives are so small that the driver should be magnetic to make it easier to get the screws in place without dropping them, or if the user has a hard time handling tiny screws! b) If you're going to include a small screwdriver, then a small (even plastic) wrench/nut driver should be included too, since the brass fittings have to be moved to mount the drives depending on the length. c) The brass fittings should be at the farthest hole on the board by default, since the most common length for new m.2 drives places the notch at that point. Apart from speed, major positives: a) includes USB-C and standard USB adapter cables. b) Easy to assemble and configure RAID choice. c) Works with just one drive as well. c) Board slides in easily and with the cover screwed on, there's no rattling. d) LED indicators for both drives. e) RAID config is 3 DIP switches and a button, dead simple. Love this little box! I received this product in exchange for an unbiased review
| Helpful?
(5 Stars)

Great Storage Device

By: Nivek - 06/09/2017
I am very happy with the performance. I set it up with a Raid 1 config for portable storage. The data transfer speeds were adequate. The aluminum case is sturdy and can handle being in the bottom of my laptop bag.
| Helpful?
(4 Stars)

Fast, simple

By: Macphoto 1970 - 06/13/2017
This Enclosure will not disappoint for speed. I install 2 drives of equal size and was impress with the speeds used. I configured the drives to work in JBOD mode and it was effortless and worked incredibly fast. The simple configuration for the dip switches makes setup very simple and easy. The case construction is built well, in fact the tolerances for the case size made the hardest part getting into it to set up the drives. I had a hard time getting it open but once it was open everything else was smooth sailing. I think if you are looking to have incredible speed for an external drive this is a nice small and slim way to do it, Overall this does not disappoint at all. I received this product in exchange for an unbiased review
| Helpful?
(5 Stars)

Great speeds

By: edzed1 - 06/16/2017
This unit delivers as advertised. Speeds on both Raid 1 and JBOD were great. Just put the drives in, configure the dip switches and plug into your computer. I like the fact it comes with both USB A and USB C cables. It also comes with a small screwdriver so you have everything you need right out of the box. Great little unit for transferring data around or for backups. I received this product in exchange for an unbiased review.
| Helpful?
(5 Stars)

What a speed demon!

By: sgto416 - 07/14/2017
I tested this enclosure with two (2) 128GB m.2 sata drives configured with RAID 0 and it is quite fast! Comes with USB-A or USB-C cables and does not require an external power source. It has a solid aluminum enclosure so it survives the travels of a road warrior! This is now a part of my daily tool kit. I received this product in exchange for an unbiased review.
| Helpful?
(5 Stars)

Super Fast True USB 3.1 compact External Enclosure

By: AStevena2 - 05/02/2018
Using XPS 8930, 2xM.2 SSDs in RAID 0, got True 3.1 speeds write over 300MB/sec, read over 400MB/sec with large files. Excellent compact Enclosure! Powered by the USB 3.1 port even.
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