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- RESOLVED: P410i: 3 Physical Disks, Converted RAID1...
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тАО09-07-2012 11:40 AM
тАО09-07-2012 11:40 AM
P410i: 3 Physical Disks, Converted RAID1 to RAID5 - Double Parity?
I started out with 2 disks in a RAID1 array. I tried to add a third (triple mirror), but hpacucli "forced" me to convert to RAID5:
=> controller slot=0 physicaldrive all show
Smart Array P410i in Slot 0 (Embedded)
array A
physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SATA, 500 GB, OK)
physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SATA, 500 GB, OK)
unassigned
physicaldrive 1I:1:3 (port 1I:box 1:bay 3, SATA, 500 GB, OK)
=> controller slot=0 array A add drives=1I:1:3
Warning: An even number of physical drives is required for this array because
it has one or more logical drives with a fault tolerance of RAID 1+0.
However, you can migrate all RAID 1+0 logical drives on this array to
the highest available fault tolerance. Would you like to migrate all
RAID 1+0 logical drives to the highest available fault tolerance?
(y/n) y
=> controller slot=0 physicaldrive all show
Smart Array P410i in Slot 0 (Embedded)
array A
physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SATA, 500 GB, OK)
physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SATA, 500 GB, OK)
physicaldrive 1I:1:3 (port 1I:box 1:bay 3, SATA, 500 GB, OK)
=> controller slot=0 logicaldrive all show
Smart Array P410i in Slot 0 (Embedded)
array A
logicaldrive 1 (465.7 GB, RAID 5, Transforming, 0% complete)
Well, that's not what I want - I need either 3 disks in RAID1 or 2 disks with a hot spare.
Why is the new RAID array still 500G? Is it double parity? Will it show 1000G after the conversion?
TIA -wsanders
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тАО09-10-2012 08:39 AM
тАО09-10-2012 08:39 AM
Re: P410i: 3 Physical Disks, Converted RAID1 to RAID5 - Double Parity?
You need to have an even number of drives in any RAID 1 set because one mirrors the other, so 2, 4, 6 etc.
It looks like the P410 has converted your RAID1 over 2 drives into a RAID5 over 3 drives.
Whenever you have a RAID5 logical drive you always lose one disk worth of space for parity, so once it has completed you should have approx 1000GB (give or take) of usable space...
I cant help with the CLI commands for adding a spare I'm afraid, I always use either ORCA (F8 prompt on boot) ACU in Windows or ACU off a SmartStart CD...
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тАО09-10-2012 12:38 PM
тАО09-10-2012 12:38 PM
RESOLVED: P410i: 3 Physical Disks, Converted RAID1 to RAID5 - Double Parity?
After Mark said, the P410i will not configure a triply-mirrored spare. Whi e not quite as redundant, you are limited to two disks in RAID1 plus a hot spare, or RAID5.