Archive ST-2221 Series User manual

User Manual
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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
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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
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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)
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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
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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
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User Manual
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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)
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User Manual
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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

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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.