Archive ST-2221 Series User manual

User Manual
- 1 -
User Manual
ST-2221 Series
Model No.:
ST-2221SUSRI (SATAto USB2.0 + SATA)
ST-2221SUSRE (SATA to USB2.0 + SATA)
ST-2221SATA (SATA to SATA)
Note: ST-2221SUSRI is with internal use packaging and
ST-2221SUSRE is with external use packaging)
Description and specs:
The ST-2221SUSR is a complete RAID solution through the use of two
2.5" SATA hard disks mounted on one mini 3.5" form factor drive cage.
It is used as a standard 2.5" HDD with mirroring capability(Raid 1).
By mirroring technique, ST-2221SUSR maintains data in two disk
drives simultaneously and securely. If one drive fails, the
ST-2221SUSR automatically switches operations to the functional
drive and after changed a new hard drive the data is mirroring back.
Data is totally secured by ST-2221SUSR.

User Manual
- 2 -
Description:
*Two ways Raid mode for Internal & External purposes. Support Raid
modes including JBOD(Single), Big(Span), Fast(Strip), Safe(Mirror),
Safe33, Safe50 and GUI only
* The dimensions match exactly as a standard 3.5" bay
* Simultaneously support two 2.5" SATA I or II hard drives in a 3.5"
form factor(Raid 1)
* Maximum transfer rate up to 480Mbps for USB2.0 & 3.0Gbps for
SATA Interface
* Complies with SATA-I, SATA-II interface, transfer rate up to 1.5Gbps
& 3.0Gbps.
* Compatible with SiliconImage SiI3132(*Suggest use “base driver”
and avoid using “Raid driver”) or SiI-3531 PCI-E to SATA Card,
SiI-3124 PCI-X to SATA Card or another early SiliconImage SATA
interface (But the early products of SiliconImage don’t support port
multiplier technology, so you can not configure more than 1 volume
mode like safe33 or safe50 on this case.)
* Hardware Raid engine inside. Easy raid configuration without any
software (It supports software raid configure for power user). And

User Manual
- 3 -
support external RAID modes including JBOD(Single), Big(Span),
Fast(Strip), Safe(Mirror), Safe33, Safe50 or GUI only.
* Hardware DIP Switch Raid Setting
* HDD Auto Eject when you open the cover
* With hot-plug function, no driver needed
* Aluminum material, best heat sink.
* Dimension: 101.7x 25.8 x 146mm
* Weight: 0.23 kg
NOTE:
This 2.5” dual HDD Raid box is featuring that it can start & recognize
TWO hard disks through USB connection..
[*Very important: When you use it as an external enclosure, we
strongly suggest DO NOT USE THE PC CASE FRONT USB PORTS
FOR CONNECTION ON THIS DEVICE. Many PC Cases’ front USB
ports may use weak wiring connection and caused the front USB ports
can not support enough power to start the device with hard drives].

User Manual
Front Panel
Picture A
A1) HDD 0 Access & Failure LED (Green: HDD-0 working. Red:
HDD-0 failed)
A2) OTB Switch & System ready/Backup LED
A3) HDD 1 Access & Failure LED (Green: HDD-1 working. Red:
HDD-1 failed)
A4) Upper cover & HDD extractor
A5) Lower cover & HDD extractor
A6) Upper HDD Safety Lock (Push right to open & push left to lock)
A7) Lower HDD Safety Lock (Push right to open & push left to lock)
- 4 -

User Manual
Picture B
B1) SATA 15pin power connector
B2) SATA 7pin data connector
B3) Mini USB Port
B4) RAID mode configuration DIP switch ( see page 9 for details )
B5) Change mode button
B6) SATA 7pin data connector
- 5 -

User Manual
Safety Lock
Upper HDD Safety Lock & Lower HDD Safety Lock. (Push right to
open & push left to lock). See Picture C.
Picture C
Install HDD:
Open the upper & lower cover and put the HDD inside the cage.
Picture D
- 6 -

User Manual
- 7 -
Hardware Installation Procedures
Please follow the following procedures to complete the hardware
installation:
1) Open the package and take out the product and make sure the
product is brand new and all the necessary parts are included. If
damage or shortage occurred, please contact your distributor or where
you bought.
2) Unlock the upper and lower covers (see picture C, push the lock
rightward ) and open the two covers and then, put the two 2.5"SATA
HDD inside the box(See Picture D).
3) After both HDD installed, push both covers back like picture C and
then, push the lock button leftward to lock both covers to secure the
HDD inside properly.
4) Then, mount the ST-2221 on the device and use the included
screws to mount it on the device and make all the cable connections
and it is ready for use.
5) There are two ways to mount the ST-2221 on the device (see
pictures E-1(on the 3.5” bay & E-2 mounted it inside the case):
-- Picture E-1) Mount ST-2221 on the floppy drive bay

User Manual
-- Picture E-2) Mount ST-2221 inside the case
Picture E-1
Picture E-2
6) See the drawing of the two ways to mount ST-2221 on the device
(See Picture F)
- 8 -

User Manual
- 9 -
Set the RAID mode on the DIP SW:
RAID Config
Display RAID Status 4 2 1
0 BIG (span) OFF OFF OFF
1 JBOD (single) OFF OFF ON
2 FAST (strip) OFF ON OFF
3 SAFE (mirror) OFF ON ON
4 SAFE33 ON OFF OFF
5 SAFE50 ON OFF ON
6 RESERVED ON ON OFF
7 GUI ONLY ON ON ON
DIP Switch Table 1

User Manual
- 10 -
When you want to set any Raid mode from the table1, follow the
following steps:
1) Connect USB or SATA data and power cable to your system, then,
turn on the power and wait both hard disks are recognized.
2) After you set the Raid mode you need, then, press the RAID
Change Mode Switch one time (Picture B, B5) to finish the RAID
Mode setting.
Note:
A) When you replaced HDDs, you MUST press the RAID Change
Switch button once( See Picture B, B5).
B)Or even you use the default mode, .you still HAVE TO press the
RAID Change Switch button once( See Picture B, B5).
(3) After selected Raid is built ready, then, to partition/format the
Raid-built HDDs. After HDDs being formatted, they are ready to
use.

User Manual
- 11 -
RAID Mode DIP Switch Setting:
1. BIG(Span) Mode ( Set DIP SW-1: OFF, SW-2: OFF, SW-4: OFF )
RAID Mode is BIG (Span), the HDD capacity is HDD1 + HDD2, It
has big capacity feature but without safety consideration.
2. JBOD(Single) Mode ( Set DIP SW-1: ON, SW-2: OFF, SW-4: OFF)
RAID Mode is JBOD (Single), the system recognizes two separate
HDD of their own capacity but without safety consideration.
3. FAST(Strip) Mode ( Set DIP SW-1: OFF, SW-2: ON, SW-4: OFF)
RAID Mode is FAST (Strip), the HDD capacity is double from the
smaller one, and with faster speed ( Ex: HDD-1 : 50Gb, HDD-2: 80G,
then, it is 100Gb in this mode).
4. SAFE(Mirror) Mode ( Set DIP SW-1: ON, SW-2: ON, SW-4: OFF)
RAID Mode is SAFE(Mirror), the system recognize 1 physical drive
only and capacity is with the smaller capacity of the two. But it is
with the highest safety. ( Ex: HDD-1 : 150Gb, HDD-2: 200G, then, it
is 150Gb in this mode).
5. SAFE33 Mode (Set DIP SW-1: OFF, SW-2: OFF, SW-4: ON)
The RAID Mode is SAFE33. It will have 30% of each HDD to build a
SAFE(mirror) Raid and also use the rest of the capacity to build a

User Manual
- 12 -
second BIG(Span) HDD. In this mode, System will recognize two
physical drives, one is SAFE(mirror) and the other is BIG(Span).
6. SAFE50 Mode (Set DIP SW-1: ON, SW-2: OFF, SW-4: ON)
The RAID Mode is SAFE50. It will take 50% of both HDD to build a
SAFE(mirror) Raid and the rest of the HDD capacity to build a
BIG(span) Raid. The system recognizes two physical drives, one is
SAFE(mirror) and the other, BIG(span). This Raid mode is
featuring with bigger SAFE(mirror) HDD capacity.
7. Reserved Mode ( Set DIP SW-1: OFF, SW-2: ON, SW-4: ON)
There is no Raid function of this setting. It is reserved.
8. GUI ONLY Mode ( Set DIP SW-1: ON, SW-2: ON, SW-4: ON )
The RAID Mode is GUI ONLY Mode. In this Raid mode, it can
configure the Raid mode through the GUI(Graphical Utility Interface).
Using this mode, you can configure different combination settings.
It is suggested for professional & advanced users.

User Manual
How to use the OTB( One button backup)
There is an OTB software together with this product. The following
pictures are the samples of the procedure reference. Please refer to
the enclosing software for all the installation details.
- 13 -
admin

User Manual
- 14 -
Press “Apply” first, then ‘OK”

User Manual
Appendix A
File System Expansion for Windows
Overview
This appendix describes the procedures needed with Microsoft
Windows for expanding file systems that have been created on
volumes that have increased in size, while preserving all of your
existing data. After you have added more hard disk drives to increase
the storage capacity of a BIG volume, you must use the supplemental
procedure described below to allow the expanded capacity to be
recognized by the Windows file system.
A command-line utility named "Diskpart.exe" ("Disk Partition") enables
you to manage hard disk partitions and volumes. This utility is
included as part of Windows XP Professional Edition, Windows 2003
Server and Windows Vista. For Windows 2000 or Windows XP Home
Edition, you must download the "diskpart" utility from Microsoft's
website.
- 15 -
Additional third-party products (such as Acronis Disk Director Suite
10.0) are available to perform similar volume management activities,

User Manual
but those products are very sophisticated and are not included in this
manua
l.
Procedure
Before you can use DiskPart.exe commands on a hard drive disk
partition/volume, you must first list and then select the partition/volume
to extend their capacity to match the virtual hard drives created in the
DIP SW.
1. Open a command prompt window by clicking Start
Run, then
entering "cmd"
2. At a command prompt, type diskpart
- 16 -

User Manual
3. Type list volumeto display the existing volumes on the computer.
4. e select volume <volume_number>where “<volume_number>” is
number of the volume that you want to extend. In this case that
will be “2”.
5. Type extend
6. Type exitto quit Diskpart.exe
The volume size will be updated to reflect the expanded physical
storage capacity while maintaining all of the existing data that is stored
on the volume.
- 17 -

User Manual
The result of extending the hard disk partition/volume is illustrated
below.
Before extend:
After extend:
Note: Before the hard drive partition/volume has been extended the
“152.67GB Unallocated” was not accessible for data usage. After
using the diskpart utility to extend the hard drive partition/volume
capacity, the Windows host side matches the virtual hard drive
partition/volume created in the DIP SW.
For more information about the diskpart utility, please see the
documentation on Microsoft's
website at:
http://www.microsoft.com/resources/documentation/windows/xp/all/pr
oddocs/en-us/diskpart.mspx?mfr=true
- 18 -

User Manual
Appendix B
File System Expansion for Macintosh
Overview
This appendix describes the procedures needed with Apple Mac OS X
for expanding file systems that have been created on volumes that
have increased in size, while preserving all of your existing data.
After you have added more hard disk drives to increase the storage
capacity of a BIG volume, you must use the supplemental procedure
described below to allow the expanded capacity to be recognized by
Mac OS X.
The following example illustrates a hard disk growing from a JBOD to a
BIG Storage Policy.
A software tool named VolumeWorks from SubrosaSoft (available from
http://www.subrosasoft.com/OSXSoftware/index.php?main_page=pro
duct_info&products_id=6) can be used to grow the partition that was
created in JBOD Storage Policy to a BIG Storage Policy disk.
- 19 -
SubrosaSoft VolumeWorks easily organizes your hard drive by
creating, resizing, copying your partitions on a Mac OS X (10.3 or
higher) system.

User Manual
There are other third-party products are available to perform similar
volume management activities, but those products are very
sophisticated and are not described in this manual.
Procedure
Growing partition/volume with VolumeWorks:
Limitations of Resize/Move
VolumeWorks can only resize HFS+ partitions
The second drive when growing from JBOD to BIG must not have
any partition information on it. It must be a raw disk with no data of
any kind.
- 20 -