7/22/25, 10:12 PM
How to manual replace disk in 3PAR when you get: Proactive Disk Replacement Required: NBD. – Tips and Tricks
How to manual replace disk in 3PAR when you get: Proactive Disk
Replacement Required: NBD.
We received a new disk from HP because we had proactive failure on disk.
If you ssh to 3par, we can not see any alarms,logs or anything that indicates that a disk have proactive failure.
In short words:
1.servicemag start 0 1
Failing the drive manually
2. servicemag status -d
to check the servicemag running in the background , check if the servicemag completes
3.showpd -failed -degraded
4.showpd -c 1
Check the OK and Fail column should be 0
5.Replace the drive on the cage postion 0:1:0
6. Wait for the servicemag status -d to finnish
7. If the failed drive is still in the system
8. showpd -failed -degraded
9. dismisspd 1
10. showpd -failed -degraded (Shoul’d be 0 disks now)
The long one:
But this is how I did it.
The disk that we need to replace is: 1 0:1:0
To see disks
HP8200-01 cli% showpd
Id
CagePos
Type
RPM
State
0 0:0:0
FC
10
normal
1800
1 0:1:0
FC
10
normal
1800
2 1:9:0
FC
10
normal
1800
3 0:3:0
FC
10
normal
1800
4 0:4:0
FC
10
normal
1800
Capacity(GB)
As you can see no warning or anything.
Then you need to fail the disk manually
#servicemag start 0 1
(or you can use servicemag start -pdid 1)
where 0 represents the Cage and 1 represent slot and space will be in between
So cage 0 slot 1 serviecmag start will run.
Then you can monitory this or wait some hours in our case (9 hours)
To check the servicemag running in the background , check if the servicemag completes:
servicemag status -d
HP8200-01 cli% servicemag status -d
Cage 0, magazine 1:
The magazine was successfully brought offline by a servicemag start command.
The command completed at Tue Oct 22 21:14:30 2019.
The output of the servicemag start was:
servicemag start 0 1
https://blog.invid.eu/2019/10/22/how-to-manual-replace-disk-in-3par-when-you-get-proactive-disk-replacement-required-nbd/
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7/22/25, 10:12 PM
How to manual replace disk in 3PAR when you get: Proactive Disk Replacement Required: NBD. – Tips and Tricks
… servicing disks in mag: 0 1
… normal disks: WWN [] Id [ 1] diskpos [0]
… not normal disks:
… relocating chunklets to spare space…
… Could not spin down disk WWN [] Id [ 1]:
Opcode = SCCMD_DOCDB
Node = 0
Tpd error code = TE_FAIL — Generic failure code
Tpd error info = Scsi failure code 0xb2
… spinning down disk WWN [] Id [ 1]
… bypassing mag 0 1
… bypassed mag 0 1
servicemag start 0 1 — Succeeded
HP8200-01 cli%
After this you can run below command.
HP8200-01 cli% showpd -failed -degraded
Id CagePos Type RPM State Total Free A B Capacity(GB)
1 0:1:0 FC 10 degraded 1715200 0 ----- ----- 1800
-------------------------------------------------------------------1 total 1715200 0
HP8200-01 cli%
Check the OK and Fail column should be 0
showpd -c 1
showpd -c 1
------- Normal Chunklets -------- ---- Spare Chunklets ---- Used - -------- Unused -------- - Used - ---- Unused ---Id CagePos Type State Total OK Fail Free Uninit Unavail Fail OK Fail Free Uninit Fail
1 0:1:0 FC degraded 1675 0 0 0 0 1675 0 0 0 0 0 0
-----------------------------------------------------------------------------------------1 total 1675 0 0 0 0 1675 0 0 0 0 0
After this replace the drive
1. servicemag status -d (Wait for this to finnsih)
2. showpd -failed -degraded
3. dismisspd 1 (1 is the number of the ID of the disk)
4. showpd -failed -degraded (Should be 0)
Done!
https://blog.invid.eu/2019/10/22/how-to-manual-replace-disk-in-3par-when-you-get-proactive-disk-replacement-required-nbd/
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