Assumptions
When a failed harddisk has been confirmed, follow the below guide to replace the disk.
Assuming a Dell R710, a PERC 6 RAID-card and a new or used SAS (2TB) harddrive.
The server is using a RAID6 array.
Notes
- Reboot the server.
- Press Ctrl-R when the PERC blurb shows on-screen.
- Check the disks under the Physical disks tree-branch on the first screen.
- Confirm a drive has a FAILED-flag showing.
- Press Ctrl-N to go to the next page.
- Find the failed drive and chose to see the options for it.
- Choose Take off-line and confirm the warning.
- The disk should not be seen at the first screen, Physical disks tree-branch.
- Put in a new disk.
- The PERC should automatically start rebuilding the array after a short period of time.
- Exit the PERC-utility and press Ctrl-Alt-Delete to reboot.
- Monitor the boot to see that no errors are thrown.
Next steps
Next steps can be performed from the office.
- Connect with ssh to the server.
- Open three terminals and run these commands, one in each terminal.
-
$ watch -n 10 megacli -LDInfo -L0 -a0
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$ watch -n 10 megaraidsas-status
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$ watch -n 10 megacli -PDRbld -ShowProg -PhysDrv [32:4] -aAL
-
What the commands do
2.1 A general output of the virtual drive information.
Adapter 0 -- Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :raid6
RAID Level : Primary-6, Secondary-0, RAID Level Qualifier-3
Size : 7.275 TB
Sector Size : 512
Parity Size : 3.637 TB
State : Partially Degraded
Strip Size : 64 KB
Number Of Drives : 6
Span Depth : 1
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Disk's Default
Encryption Type : None
Is VD Cached: No
Exit Code: 0x00
2.2 Shows the individual disk statuses and what they currently do.
-- Arrays informations --
-- ID | Type | Size | Status
a0d0 | RAID 6 | 7450GiB | DEGRADED
-- Disks informations
-- ID | Model | Status | Warnings
a0e32s0 | TOSHIBA MG04SCA200E 1863GiB | online
a0e32s1 | SEAGATE ST2000NM0001 1863GiB | online
a0e32s2 | IBM-ESXS ST2000NM0023 1863GiB | online
a0e32s3 | SEAGATE ST2000NM0001 1863GiB | online
a0e32s4 | HITACHI HUS72402CLAR2000 1863GiB | rebuild | errs: media:0 other:8
a0e32s5 | IBM-ESXS ST2000NM0023 1863GiB | online
There is at least one disk/array in a NOT OPTIMAL state.
2.3 The rebuilding progress.
Rebuild Progress on Device at Enclosure 32, Slot 4 Completed 42% in 203 Minutes.
Exit Code: 0x00
Sources
The internet
Using perccli with Dell PE R710 and Perc 6/i
