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With a RAID 1, RAID 5, or RAID
6
volume, you can also add a spare disk after the
RAID is created.
See Chapter 6: Tips and Tricks >
Adding a Spare Disk
for details.
For more information on RAID, see
Appendix
B
: RAID Basics
.
RAID Level
You can set the storage volume as JBOD, RAID 0, RAID 1, RAID 5, RAID 6 or
RAID 10. RAID configuration is usually required only when you first set up the
device. A brief description of each RAID setting follows:
RAID Levels
Level
Description
JBOD
The storage volume is a single HDD with no RAID support. JBOD
requires a minimum of 1 disk.
RAID 0
Provides data striping but no redundancy. Improves performance
but not data safety. RAID 0 requires a minimum of 2 disks.
RAID 1
Offers disk mirroring. Provides twice the read rate of single disks,
but same write rate. RAID 1 requires a minimum of 2 disks.
RAID 5
Data striping and stripe error correction information provided.
NOTE
Building a RAID volume may take time, depending on the size of hard drives
and RAID mode. In general, while the RAID volume building process is up to
“RAID Building” then the data volume is capable to be accessed.
WARNING
Creating RAID destroys all data in the current RAID volume. The data is
unrecoverable.
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