S352BU33RER Manual User Manual

Instruction Manual
7
Available RAID Congurations
The S352BU33RER enclosure supports 4 dierent RAID congurations. RAID is a
storage technology that combines multiple hard drives into a single unit for secure
data redundancy, increased volume size and/or improved performance.
Descriptions and benets for each available RAID conguration are listed below:
Normal - JBOD
In JBOD, no RAID conguration is set and both drives appear as individual disks.
Note: For both drives to be detected while connected via eSATA the host controller must
support SATA Port Multiplier.
BIG – Combine
In BIG, both drives appear together as a larger individual disk the size of both drives
combined. This conguration enables you to create a larger volume than would be
available using a single drive without the performance increase oered with RAID 0.
RAID1 – Mirroring
In RAID1 both drives appear as a single disk and data is written identically to both. This
level protects your data from individual drive failure as a backup of all data is written
instantly.
RAID0 – Spanning
In RAID0 both drives appear together as a larger single disk the size of both drives
combined. This level can improve your performance as read and write operations are
performed in parallel on separate disks.
How to Use
Connecting the Hard Drive
Once the enclosure has been attached to a computer, and powered on, your computer
system will automatically recognize the drive(s) and it will be accessible as though it
were installed in the system internally.
Note: If your computer fails to automatically recognize your drive it is likely your
drive has not been initialized or formatted correctly. (See Drive Initialization below for
further instructions.)
LED Indicator
The hard drive enclosure oers LED indicators for each drive, so you can monitor drive
activity. The LED will ash while the hard drive is being accessed. Do not remove the
enclosure from the host computer while the LED is ashing, as it could damage the
drive or the enclosure, resulting in data loss.