User manual

RAID 30
Striping over the members of the RAID 3 volumes . RAID 30
allows two hard drives to fail or gets unplugged, but they need
to be part of different arrays.
RAID 50
Striping over the member RAID 5 volumes . RAID 50 allows
two hard drives to fail or gets unplugged, but they need to be
part of different arrays.
RAID 60
Striping over the member RAID 6 volumes. RAID 40 allo ws
four hard drives to fail or gets unplugged, but each two need
to be part of different arrays.
JBOD The abbreviation of “Just a Bunch Of Disks”. No protection of
data. VG fails if any hard drive fails or gets unplug.
4.2 RG migration
To migrate the RAID level, follow the steps below.
1. Select “/ Volume config uration / RAID group” .
2. Move cursor to the gray button next to the RG number; click “Migrate”.
3. Change the RAID level by clicking the down arrow to “RAID 5”. There
will be a pup-up which indicates that HDD is not enough to support the
new setting of RAID level, click “ ” to increase hard
drives, then click “ “ to go back to setup page.
When doing migration to lower RAID level, such as the original RAID
level is RAID 6 and user wants to migrate to RAID 0, system will
evaluate whether this operation is safe or not, and appear a message
of "Sure to migrate to a lower protection array?” to give user
warning.
Figure 4.2.1
4. Double check the setting of RAID level and RAID PD slot. If there is no
problem, click “ “.
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