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Review of the Sans Digital MobileSTOR MS2UT+B 2 Bay Drive Enclosure


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If you have a need to connect some SATA disks to your computer externally, you might want to consider using a drive enclosure. The Sans Digital MobileSTOR MS2UT 2 bay drive enclosure also provides a RAID solution if you want to protect the data on your drives.


The Sans Digital website describes the MobileStore:

The MobileSTOR MS2UT+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, MS2UT+ 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 MS2UT+ 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.
  • 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 latest RAID chipset, supporting SAFE 33 / SAFE50 mode.
  • SAFE33 / 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.

  • MS2UT frontMS2UT side

    MS2UT back


    Model :
    Form Factor : Cube
    HDD Trays : 2 Hot-Swappable 3.5″
    RAID Level : Big (Spanning), Safe (RAID1), Fast (RAID 0), JBOD, SAFE33, &  SAFE50
    Maximum Capacity : 4TB
    Auto Rebuilding : Yes
    Host Interface & Transfer Rate : USB 2.0 (480Mbps) & eSATA (3.0Gbps)
    Drive Interface : SATA I / SATA II
    Cooling Fan : 1.6″ Ball Bearing
    Power Supply : 80W (110V~240V)
    Control Interface : LCD Panel
    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 Warranty : 1 Year
    Package Contents :
    MS2UT+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)


    It’s quite a small box, and it contains the MS2UT, power cable, an eSata bracket, an eSata cable, and USB cable, a quick start manual, and some screws and keys.

    MS2UT boxMS2UT box

    MS2UT boxMS2UT box

    MS2UT box contents

  • Andrew Edney
    I am the owner and editor of this site. I have been interested in gadgets and tech since I was a little kid. I have also written a number of books on various tech subjects. I also blog for The Huffington Post and for FHM. And I am honoured to be a Microsoft MVP since January 2008 - again this year as an Xbox MVP.


    1. This looks like a very nice way to add raid 0 to a small form factor system i.e. my itx media center build.

    2. just added this to my HTPC system with the 4 tuner ceton coming out i wanted to be ready for the 4 channel recording, transfer is a steady 20megs per windows

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