SY-ENC25042 User Manual

SY-ENC25042 User Manual
2.5” 2-BAY RAID Storage Enclosure
User Manual
1 Introduction
1.1 Features
-Supports Big(JBOD), RAID0,RAID1,Normal mode
-Enhanced data protection and high-performances storage
-Automatic disk rebuild
-Support with USB3.0 high speed reach up to 5.0Gbps
-Supports plug and play
-Support mode select by RAID switch
1.2 Specifications
Inner Interface: SATA
Outer Interface:USB3.0
Date Transfer rate: Support USB 3.0 super-speed (5Gbps),
Complies with USB 2.0 high speed (480Mbps), USB 1.1 Full speed (12Mbps)
Suitability:2 x 2.5” SATA I/II/III HDD
Supports Plug-play and Hot-plug
Power Supply: DC5V supplied by the Computer
Material: Aluminum
OS Compatibility: Windows 2000/XP/Vista/7/8, Linux and MAC OS 10.6 or
Dimension: 152*85*28.5 mm (L x W xH)
1.3 System Requirements
PC Requirements
· Minimum Intel Processor Pentium II/50MHz, 64MB RAM
· Windows 2000 / XP / VISTA/7/8
· Active USB port
MAC Requirements
· Minimum Apple G processor, 64MB RAM
· Mac OS 10.6 and above
· Active USB port
Supported Hard Drives
· One or two 2.5” SATA I/II/III hard drives
· capacity up to 2TB X2
· Hard drives of identical capacities are recommended
· Supports large volumes in 2TB
Note: In order for the computer to access volumes larger than 2TB. Both the
hardware and OS need to have the capacity to support large volumes(e.g.:
Windows 7/Vista or Mac OS 10.4 and above).
1.4 Package Contents
2-bay raid storage enclosure
Power supply
USB3.0 cable
DC power cable
2 RAID Function
What is RAID?
RAID (Redundant Array of Independent Disks) is a set of technology
standards for teaming disk drives to improve fault tolerance and performance
Increased data protection. If in an unfortunate event where a drive fails,
the same data is preserved on the mirrored drive.
Intelligent array controllers can apply different types of RAID for different
hard disk drives.
Increased overall network system data capacity.
Increased I/O read/write efficiency.
Setting the RAID Mode:
The RAID mode should be set before installing the drives and then first
formatting the drives.
1. Open the rear cover and pull out the plastic frame from the
2. Set the RAID switch and select your preferred RAID mode. There have 2
mode switch in the inner of the product, it can form 4 kinds of different
ways through these 2 switches, it can realize 4 kinds of different functions
as below:
3. Install the hard drives and replace the rear cover.
4. Connect the product into the PC USB 3.0 port by USB3.0 cable, HDD LED
should turn ON to indicate the SATA hard drives were detected.
5. Format the drives.
6. Done
Note: Changing the RAID mode will require you to re-format the drivers.Make
sure to backup all existing data first!
※ Normal Mode (Non-Raid):
Normal mode is the default setting of HDD enclosure, and will not use any
RAID mode. In Normal mode, both of the two hard disks inside the enclosure
are in an independent operation state, and also will be identified as two
separate drives in the system explorer. Users can choose any hard drive for
storing files. If one hard drive is damaged, the other hard drives data will not be
※ JBOD Mode (Spanning):
In JBOD mode two hard drives will be merged into one. Performance and
literacy speed will be the same as a single hard drive. The total capacity of the
portable hard drive is equal to the sum of the two hard drives combined. When
writing data to the JBOD array, the system will write date to the first disk. When
the storage space of the first disk is full the data will start be stored on the
second disk. If the data in the first disk is damaged, then all data in the array
will be lost.
※ RAID0 (Striping):
A RAID0 array divides data into two parts respectively in the two hard
drives. The theoretical storage speed of the array is twice that of a single drive,
and actual capacity equals twice the size of the smallest capacity hard
drive(between the two hard drives). The deficit of a RAID0 array is that if any
hard drive fails the entire RAID array will not be restored, and the data will be
※ RAID1 (Mirroring):
A RAID1 array mirrors data written to the two hard drives equally. The
capacity of the array is equal to the smallest capacity drive in the array.
Storage speed is same as a single drive. The advantage of RAID1 is that if any
hard drive fails the other drive will still carry all data written to the drives. Its
deficit is that the maximum capacity of the array is equal to the smallest drive
in the array..
Note: For very important material, such as databases or personal data, this is
an absolutely safe storage solution.
3 System Setup
3.1 Hard Drive Assembly
The drives can be installed at any position, there is no specific order
Step 1: Unlock the switch at the rear cover and open it.
Step 2: Pull out the plastic frame from the aluminum-shell
Step 3: Insert the HDDs to the 7+15P SATA connectors on the PCBA. Attach
the two HDDs with the included screws
Step 4: Inset the plastic frame into the aluminum housing
Step 5: Close the rear cover, HDD Installation completed
3.2 Connect to computer
1.Connect one end (type Mini) of the USB cable into the mini USB Port of
your HDD enclosure.
2.Connect the other end of the USB cable (type A) into any active USB port
of the computer.
3.Connect Power supply to the enclosure and power up the enclosure
4.Let OS search and install the driver automatically.
5.Use the disk management tool(PC) or disk utility(MAC) to create a new
partition and format the drives
6.Open “My Computer” to see your external hard drive ready to use.
To enjoy USB 3.0 super speed up to 5Gbps,your computer must be
equipped with built-in USB 3.0 ports, or a USB 3.0 host PCI-e card
Use the included DC power cable to provide extra power.
It is not possible to add more drivers to an existing RAID array without
re-formatting it. When adding additional drivers at a later point, they will only
be detected after the device has been restarted and the drivers have been
3.3 Files Backup Application
Please consult the help of application software for the backup application
installation and operation.
3.4 Replacing Hard Drives
When one drive fails, the HDD LED will display below state:
If HDD1 Fails: LED1 off
If HDD2 Fails: LED2 off
If one drive fails and the RAID mode is set to RAID0 or JBOD,the data will
be lost and the system can not be accessed again until the drive have been
1. Check the HDD LED state and replace the faulty drive.The power
must turn off when replacing the driver.
2. For RAID 1, the RAID array will be rebuilt automatically. During this
process, the HDD LED will flash (HDD R/W). Rebuilding the RAID
array will take several hours, depending on the drive capacity.If the
RAID is rebuilding properly, the HDD LED will be stable. If the capacity
of the new drive is less than the previous drive, the HDD LED will
display as above, and the rebuild process can not be completed.
3. For RAID 0 and JBOD, restart the system and then format the drives
4. For Non-RAID (Normal Mode), simply format the new drive.
Note: We recommend not turning off the power during the rebuild process but
if the process is interrupted,it will continue rebuilding the data as soon as the
power is turned back on.
Q: Can I use external USB hub?
A: Yes, USB hub works in the same way as the computer USB ports
Q: My computer doesn't have USB 3.0 port, Can I use USB 3.0 host
A: USB 3.0 host adapter works in the same way as the built-in USB ports.
Q: What file system should I choose to format my drive?
A: This will depend on how you want to use the drive but in general,we
Windows XP/VISTA/7/8  NTFS
Mac OS X  HFS+ (Mac OS Extended)
To use it on both PC and Mac  FAT32 (single file size is limited to 4GB)
Q: How many drives can fail before I loose my data?
A: For RAID 0 and JBOD, any drive failure will result in the data being lost. For
RAID 1, more than one drive failure at the same time will mean the data can
not be recovered anymore. For Non-RAID, only the data on the defective drive
will be lost.
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