iSCSI GbE to SAS/SATA II RAID Subsystem
User Manual
77
4.2 RG Migration
To migrate the RAID level, please follow the steps below.
1.
Select
“/ Volume configuration / RAID group”
.
2.
Move the mouse pointer 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.
4.
Double check the setting of RAID level and RAID PD slot. If there is no
problem, click “
“.
5.
Finally a confirmation page shows the detail of RAID information. If there is no
problem, click “
“ to start migration. System also pops
up a message of
“Warning: power lost during migration may cause
damage of data!”
to give user warning. When the power is abnormally off
during the migration, the data is in high risk.
6.
Migration starts and it can be seen from the
“status”
of a RG with
“Migrating”
. In
“/ Volume configuration / Virtual disk”
, it displays a
“Migrating”
in
“Status”
and complete percentage of migration in
“R%”
.
A RAID 0 with 4 physical disks migrates to RAID 5 with 5 physical disks.
A RAID 0 migrates to RAID 5; the completed percentage is 14%.
