Thecus Technology i Series - Manual (Page 60)

4.2 VG migration and expansion
To migrate the RAID level, please follow the below procedures. If the VG
migrates to the same RAID level of the original VG, it is expansion.
1. Select “/ Volume config / Volume group”.
2. Decide which VG to be migrated, click the button “
” in the RAID
column next the RAID level.
3. Change the RAID level by clicking the down arrow mark “ ”.
There will be a pup-up which shows if the HDD is not enough to
support the new setting 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, the
controller will evaluate this operation is safe or not, and display "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 no problem,
click “ “.
5. Finally a confirmation page shows detail RAID info. If no problem, click
“ “ to start migration. Controller 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 migration, the data is in high risk.
6. Migration starts and it can be seen from the “status 3” of a VG with a
running square and an “M”. In “/ Volume config / User data volume”,
it displays an “M” in “Status 4” and complete percentage of migration
in “R%”.
Figure 4.2.1
Figure 4.2.2
(Figure 4.2.2: A RAID 0 with 2 physical disks migrates to RAID 5 with 3 physical disks.)
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