SansDigital MobileStor MS2UTN+ RAID Enclosure Review


RAID without the mess

Sometimes setting up a RAID array can be a pain in the butt.  For one, professional RAID cards can be expensive.  Two, many “easy RAID” features of motherboards are closed solutions.  Three: cheaper solutions may not be reliable, and often require offline rebuilds when something goes wrong..  What if you want to have the redundancy protection or speed of RAID, but in an external modular box that doesn’t mess with your system’s current configuration?

SansDigital presents the industry with their MobileStor solutions, which are external hard drive enclosures with a built-in RAID controller.  This solution allows you to instantly create several RAID arrays.  Since the enclosure is its own little island, you can take your RAID array with you on place it on any computer.

You can now have the benefits of RAID on computers that otherwise could not do it.  Imagine video editing at work on a laptop, and then taking your RAID box home for some finishing touches.  What about using the device as a redundant backup unit?  You can plug it in to all of your computers, perform your backup, and then move it to a secure location… and your data is safe even if a drive fails.  There are many reasons I can think of to have a portable RAID device such as this.

The MobileSTOR MS2UTN+B series is a fully loaded 2-bay external RAID solution designed for home and small business storage needs. With simplicity and flexibly in mind, this series is equipped with two hot-swappable 3.5” hard drive trays, as well as both USB 2.0 and eSATA host interfaces. In addition to RAID 0 and RAID 1, MS2UTN+B also utilizes the latest Silicon Image 5744 chipset, supporting the newest SAFE33 and SAFE50 technology.

SAFE33 and SAFE50 allows the creation of two hard drive volumes where 1/3 (SAFE33) or 1/2 (SAFE50) of the volume is used for mirroring and the rest is used for Spanning (Big). In comparison to SAFE (RAID 1) mode, which utilizes both hard drives for mirroring, SAFE33 and SAFE50 increase storage space by setting aside a portion of disk space for regular data storage while performing mirror simultaneously. By incorporating SAFE33 and SAFE50, the MS2UTN+B eliminates the cost of additional hard drives needed for various storage modes.


  • Hardware RAID engine, supporting RAID 0, RAID 1, Spanning, JBOD, SAFE33, and SAFE50.
  • GUI mode allow customized RAID mode setup. Up to 2 RAID volume with different RAID mode can be set.
  • Drive interface: 2 x 3.5″ SATA I / SATA II hard drive.
  • Removable trays for fast access of additional hard drives and easy trouble shooting.
  • Utilizing the lastest RAID chipset, supporting SAFE 33 / SAFE50 mode.
  • SAFE 33 / SAFE50 creates two hard drive volumes where 1/3 or 1/2 of the hard drive volume is used for mirroring and the rest is used for spanning (Big).
  • Temperature controlled cooling fan for quieter operations.
  • Supports Windows, Linux, and MAC OS X.

Note: For eSATA connection, port multiplier support required for 2 RAID volume, such as JBOD, SAFE33 and SAFE50. eSATA without port multiplier support will only detect the first volume.


Model MS2UTN+B
Form Factor Cube
HDD Trays 2 Hot-Swappable 3.5″
RAID Level Big (Spanning), Safe (RAID1), Fast (RAID 0), JBOD, SAFE33, &
SAFE50, GUI mode allow customized RAID volume setting.
Maximum Capacity 2TB
Auto Rebuilding Yes
Hot-Spare N/A
Host Interface & Transfer Rate USB 2.0 (480Mbps) & eSATA (3.0 Gbps)
Drive Interface SATA I / SATA II
Cooling Fan 1.6″ Ball Bearing
Power Supply 80W (110V~240V)
Control Interface N/A
Status Indicators RAID Alarm, Fan / Temperature, Power LEDs
Dimension (in) 4.8″W x 8.0″D x 4.0″H
Weight (lb) 3.8
Safety Regulations CE, FCC, UL, RoHS
Limited Watrranty 1 Years
Package Contents MS2UTN+B (1)
Removable Tray Modules (2)
Power Cord (1)
Hard Drive Tray Keys (2)
RS232 Cable (2)
USB 2.0 Cable (1)
eSATA Cable (1)
Quick Installation Manual (1)