Failure Predicted instruction

Question

Hello,

This is my situation

RAID5 ARRAY

T420

PRECH710

Physical Disk 0:1:0 Online Spun Up
Physical Disk 0:1:1 Online Spun Up Failure Predicted
Physical Disk 0:1:2 Online Spun Up
Physical Disk 0:1:4 Ready Spun Up GLOBAL HOT SPARE
Physical Disk 0:1:5 Online Spun Up

What do I need to do ?

execute -OFF - Physical Disk 0:1:1

then I will see rebuild option to execute on Physical Disk 0:1:4 ?

I don`t sure because the OPEN MANAGE send me alert

"Making a physical disk offline may result in data loss. Are you sure you want to offline this physical disk?"

When I trying to execute -OFF - Physical Disk 0:1:1

HELP

theflash1932 · Accepted Answer

Yes, pred fail  1:1 is not actually offline yet, so hot-spare can't rebuild. You need to force 1:1 offline first, then hot-spare will begin rebuilding automatically.

RARIHUT · Answer

I did it and the Rebuilding Start :-) !

It`s always looks like stupid question and obvious Answer ,

but we all know that extra click can create irreversible damage...

Thank You THEFLASH1932 and to all Dell Community Support Forums

RARIHUT · Answer

one more question about that situation.

In my case I did it manually.

but when drive -Physical Disk 0:1:1 would fail by himself-

my -Physical Disk 0:1:4 GLOBAL HOT SPARE - would rebuild automatically.

This is the idea of GLOBAL HOT SPARE ?

theflash1932 · Answer

Yes, if the drive fails (not predicted failure, but actual failure where it is dropped out of the array by the controller), then the hot-spare will automatically start rebuilding. If you have a PERC H7x0, I believe you can set the controller to replace a pred fail drive and not wait for it to fail.

RARIHUT · Answer

Look at my Capture.JPG screenshot

theflash1932 · Answer

I don't understand ... can you post a screenshot?

RARIHUT · Answer

When the rebuild finish I take out the fails drive

shutdown and restart my server .

Now I see " enclosure backplane - degraded"

I execute DSET Clear hardware logs (recommended by the PowerEdge HDD/SCSI/RAID Forum)

No change

Any idea?

RARIHUT · Answer

solution! http://tjchester.github.io/technote/dell-degraded-backplane-error-after-disk-replace/

Frapster · Answer

The link in the previous post doesn't resolve, but I did google it and found this. https://tjchester.github.io/post/2014-12-08-dell-degraded-backplane-error-after-disk-replace/

PowerEdge HDD/SCSI/RAID

Failure Predicted instruction

Was this post helpful?