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Failed disk FC 3PAR 7440c 4N

 
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Tabriz1
Advisor

Failed disk FC 3PAR 7440c 4N

Hi Dear Community,

Our company ues 3PAR 7440c 4N . OS 3.2..1 There are  failed 3 FC disk .

What are you recommend  to change failed FC disk?

 

Thanks

3 REPLIES 3
sbhat09
HPE Pro
Solution

Re: Failed disk FC 3PAR 7440c 4N

Hi Tabriz,

You need to remove the failed PDs and replace them with new PDs of the same model and capacity. Also the v3.2.1 is out of support life. Please contact HPE support to upgrade the 3PAR OS to the latest supported version.

Below is the procedure to remove the failed PDs.

Step                          Command                                                                   Purpose
1             setpd ldalloc off <DiskID>                                                     To stop data to drive - Repeat for all PDs
2             showpd -s                                                                              Make sure disks are in Degraded state
3             movepdtospare -f -vacate -nowait <DiskID>                       Vacate all data from PD
4             showpdch -mov                                                                    See the Remaining chunklets to be moved
5             movech -perm -ovrd X:Y                                   OPTIONAL: If getting an error, move Chunklet manually (example X                                                                                              is the PDID and Y is the Chunklet number) repeat till disk is empty
6               showpdch -spr <DiskID>                                                 Shows the Spare chunklets on the PD
7                removespare PDID:a                                                      Removes the Spare chunklets from the PD
8                dismisspd <DiskID>                                                       Dismisses the PD from the 3PAR
9                 Redo Steps 3-7 for all PDs
10               Remove All PDs from Cage                                         Remove the vacated PDs from the 3PAR
11                 tunesys -chunkpct 1                                                   Tune System

After that replace it with new PDs of same model and capacity. Then run the command 'admitpd' to admit the PD into the system and start writing data.

Regards,

Srinivas Bhat

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Tabriz1
Advisor

Re: Failed disk FC 3PAR 7440c 4N

l m sorry OS is 3.2.2)

We have 3 failed FC Disk can we replace all of them once ?

 

After the Remove All PDs from Cage                                         Remove the vacated PDs from the 3PAR   will the data lost?

 

And What  means this command servicemag (there was not such command in which you writed)

sbhat09
HPE Pro

Re: Failed disk FC 3PAR 7440c 4N

Hi Tabriz,

The PDs are already failed. If there is any data loss, you would have already noticed it. Replacing failed PDs will not result in data loss. You can do removal procedures for all 3 PDs one after the other for all 3. Replace them together and admit them together.

'servicemag' command is responsible for relocating the chunklets. After 'admitpd' (as per the steps in my previous respose), 'servicemag' is expected to resume automatically (after the disk initialization process). If you are not sure, you check the servicemag status with the command 'servicemag status cg mg' (cg = cage id, mg = mag id) and then run the command 'servicemag resume -pdid'. After successful completion of servicemag, chunklets will move from spare back to regular chunklets. That completes the process of PD replacement.

Regards,

Srinivas Bhat

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