StarTech.com InfoSafe S252U2ERR User manual

SATA Hard Drive Enclosure
2.5” Black eSATA and USB to
Dual Removable SATA Hard
Drive Enclosure with RAID
S252U2ERR
Instruction Manual

FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.•
Increase the separation between the equipment and receiver.•
Connect the equipment into an outlet on a circuit different from that to which the receiver•
is connected.
Consult the dealer or an experienced radio/TV technician for help.•
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other
protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only
and do not represent an endorsement of a product or service by StarTech.com, or an
endorsement of the product(s) to which this manual applies by the third-party company
in question. Regardless of any direct acknowledgement elsewhere in the body of
this document, StarTech.com hereby acknowledges that all trademarks, registered
trademarks, service marks, and other protected names and/or symbols contained in this
manual and related documents are the property of their respective holders.

i
Table of Contents
Introduction..................................................................... 1
Packaging Contents.....................................................................1
System Requirements .................................................................1
Front View....................................................................................2
Rear View ....................................................................................2
Installation....................................................................... 3
Hardware Installation...................................................................3
Driver Installation.........................................................................4
How to Configure ............................................................ 4
Operating Modes.........................................................................4
Using the Storage Device............................................... 5
Specifications.................................................................. 7
Technical Support........................................................... 8
Warranty Information...................................................... 8

1
Introduction
The StarTech.com S252U2ERR Dual Removable 2.5” SATA External
Hard Drive Enclosure provides a complete, hardware-based
external RAID storage solution for laptop or desktop computers.
Accommodating two 2.5” SATA 1.5/3.0Gbps hard drives, this compact
HDD enclosure supports RAID configurations including JBOD (Single),
Spanning (BIG/Concatenated), RAID 0 (Fast) and RAID 1 (Safe).
Packaging Contents
1 x S252U2ERR enclosure•
1 x eSATA cable•
1 x USB cable•
1 x Universal Power Adapter with NA/UK/EU plugs•
1 x Set of keys•
1 x Stand•
1 x Instruction Manual•
System Requirements
eSATA and/or USB enabled computer system•
NOTE: eSATA host controller must support Port Multiplier technology
Microsoft• ®Windows®2000/XP/Vista/7 (32/64-bit),
or Apple®Mac OS®10.2 or later, or Linux®

2
Front View
Rear View
Door Twist Lock
Door Latch
Power/Activity
LED
Reset switch
RAID Mode
switch
eSATA
connector
USB
connector
Power
connector
ON/OFF
switch

3
Installation
WARNING: Hard drives require careful handling, especially when
being transported. If you are not careful with your hard disk, lost data
may result. Always handle your hard drive and storage device with
caution.
Hardware Installation
Make sure the power switch on the enclosure is set to OFF and the1.
power adapter is unplugged from the enclosure.
Unlock the drive bay doors by turning the twist lock clockwise with2.
the provided keys.
Open the drive bay doors by pulling on the metal door latch forward.3.
Slide a bare 2.5” SATA hard drive into the drive bay and close the4.
door behind it, making sure it latches properly.
Lock the drive bay doors by turning the twist lock counter-clockwise5.
with the provided keys.
Set the enclosure to the proper RAID mode via the selection switch6.
on the rear.
Connect the power adapter from an electrical outlet to the enclosure.7.
Power on the enclosure by setting the power switch to ON.8.
Press the “Reset” button on the rear of the enclosure to ensure the9.
proper RAID mode becomes set.
Connect the enclosure to the computer via eSATA or USB, not10.
both.
To remove drives from the enclosure, first make sure that the11.
disk volume is umounted within the operating system (see
documentation for your operating system or host controller) or the
computer is off.
Turn the enclosure off by switch the power switch to OFF.12.
Unlock the drive bay door with the provided keys and open by13.
pulling the metal latch forward.

4
Driver Installation
No driver installation is required for these operating systems, as this
enclosure is natively supported, so the drivers are already installed.
How to Congure
Operating Modes
Mode Description
RAID 0
(Striping)
Striping combines multiple disk into a single large
disk array. The data is split evenly across each disk
simultaneously. Read/write performance is increased as
a result, but failure of any one disk will make the entire
array unusable.
RAID 1
(Mirror)
Mirroring writes the same data across multiple disk,
creating exact mirror copies. This provides redundancy
in case one drive fails.
JBOD
(Single)
JBOD enables each hard drive to be seen separately.
This should be used if only a single hard drive is
installed.
NOTE: When using eSATA, JBOD should only be used
if the eSATA host controller provides Port Multiplier (PM)
support. If a host is not PM-aware, only a single drive
will be visible. No such limitation exists if using the USB
connection.
BIG
(Concat)
BIG concatenates multiple hard drives into a single large
disk. Provides no performance or redundancy benefits.

5
Using the Storage Device
Windows 2000/XP/Vista/7
If you are using a brand new hard drive that does not contain any data,
then you will first need to prepare the hard drive for use. From the
main desktop, right-click on “My Computer” (“Computer” in Vista/7),
then select Manage. In the new Computer Management window, select
Disk Management from the left window panel.
Locate the Disk that says it is “Unallocated” (check hard drive capacity
to confirm it’s the correct hard drive) and then right-click in the section
that says “Unallocated” and select “New Partition”.

6
The New Partition Wizard will appear. Follow the instructions in the
wizard to complete setting up the drive. Once complete, the Disk
should show up as “Healthy” with a drive letter assigned (i.e. E:). This
drive letter should now appear within My Computer.
If you are installing a hard drive that already has data on it, then after
plugging it in, the drive should automatically show up with a drive letter
assigned within My Computer.

7
Specications
Bus Interface USB 2.0
SATA 3.0Gb/s
Chipset ID Silicon Image SiI5744
Connectors
1 x eSATA*
1 x USB mini-B
1 x DC Power
LEDs 2 x Power/Activity
Compatible Hard Drives 2.5” SATA 1.5/3.0Gbps, height up
to 9.5mm, up to 500GB capacity
Maximum Data Transfer Rate eSATA: 3.0Gbps
USB2.0: 480Mbps
RAID Modes 0, 1, JBOD (single), BIG (concat)
Power Adapter 5VDC, 2A, center positive
Operating Temperature 5°C ~ 70°C (41°F ~ 158°F)
Storage Temperature -40°C ~ 80°C (-40°F ~ 176°F)
Humidity 8 ~ 90% RH
Dimensions 150.0mm x 101.0mm x 25.0mm
Weight 224g
Compatible Operating
Systems
Windows 2000/XP/Vista/7
(32/64-bit), Mac OS 10.2 or later,
Linux
* eSATA host controller must support Port Multiplier technology

8
Technical Support
StarTech.com’s lifetime technical support is an integral part of our
commitment to provide industry-leading solutions. If you ever need
help with your product, visit www.startech.com/support and access
our comprehensive selection of online tools, documentation, and
downloads.
Warranty Information
This product is backed by a one year warranty.
In addition, StarTech.com warrants its products against defects in
materials and workmanship for the periods noted, following the initial
date of purchase. During this period, the products may be returned
for repair, or replacement with equivalent products at our discretion.
The warranty covers parts and labor costs only. StarTech.com does
not warrant its products from defects or damages arising from misuse,
abuse, alteration, or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA
LLP (or their officers, directors, employees or agents) for any damages
(whether direct or indirect, special, punitive, incidental, consequential, or
otherwise), loss of profits, loss of business, or any pecuniary loss, arising
out of or related to the use of the product exceed the actual price paid
for the product. Some states do not allow the exclusion or limitation of
incidental or consequential damages. If such laws apply, the limitations
or exclusions contained in this statement may not apply to you.

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