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6 allows two hard drives failure or unplugging. If it needs to
rebuild two hard drives at the same time, it will rebuild the first
one, then the other in sequence.
RAID 0+1
Mirroring of RAID 0 volumes. RAID 0+1 allows two hard drive
failures or unplugging, but at the same array.
RAID 10
Striping over the member of RAID 1 volumes. RAID 10 allows
two hard drive failure or unplugging, but in different arrays.
RAID 30
Striping over the member of RAID 3 volumes. RAID 30 allows
two hard drive failure or unplugging, but in different arrays.
RAID 50
Striping over the member of RAID 5 volumes. RAID 50 allows
two hard drive failures or unplugging, but in different arrays.
RAID 60
Striping over the member of RAID 6 volumes. RAID 40 allows
four hard drive failures or unplugging, every two in different
arrays.
JBOD
The abbreviation of
“J
ust a
B
unch
O
f
D
isks
”
. No data
protection. VG fails if any hard drive failures or unplugs.
4.2 VG migration and expansion
To migrate the RAID level, please follow below procedures.
1. Select
“/ Volume config / Volume group”
.
2. Decide 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“
”.
There will be a pup-up which shows if the 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