I’ll try contacting LSI tomorrow and see if I can squeeze any info out of them. I’ll also try powering down the server and changing out the cable in hopes of removing the errors.

I am also not sure what is a reasonable number for media errors. I have only seen a few drives where the media error has gone over a dozen, and in those cases the error count was low (or zero) and then exploded with the drive failing shortly thereafter. I don’t know if once the media error count hits a certain number the predictive failure flag is set, or is it really a drive-specific parameter. Media errors are, to an extent, to be expected and the drive should be invisible recovering from them up to a point. Are the ones being count unrecoverable errors or revoverable ones?

I don’t think the LSI is really providing any documentation on what these error types mean and how they ought to be interpreted.

Did you ever learn more about what “other” errors are? I find mentioned elsewhere a suggestion that they often come from cable problems. But does anyone know a definition? Are they cumulative? Is there a way to reset them?

Also, what’s a reasonable number to ignore for media errors? I see in an older LSI doc that at least some of their controllers fail a drive at 32 media errors. I see in another doc advice to replace a drive with even a single media error.

Adapter 0 — Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :
RAID Level : Primary-5, Secondary-0, RAID Level Qualifier-3
Size : 271.899 GB
Parity Size : 135.949 GB
State : Optimal
Strip Size : 64 KB
Number Of Drives : 3
Span Depth : 1
Default Cache Policy: WriteThrough, ReadAhead, Cached, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAhead, Cached, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy : Enabled
Encryption Type : None
Is VD Cached: No

which was creating the output of:

OK: 0:0:RAID-5:3 drives:135.949GB:Optimal 0:1:RAID-1:2 drives:135.899GB:Optimal 0:2:RAID-1:2 drives:0GB:Optimal 0:3:RAID-5:3 drives:135.949GB:Optimal 0:4:RAID-5:3 drives:0GB:Optimal 0:5:RAID-5:8 drives:0GB:Optimal Drives:24 Hotspare(s):3

(yes, I have several disks, and I didn’t feel like putting out all the listing)

You can see that the first virtual disk isn’t correct, it should read 271.899GB, however the script output shows 135.949GB. it gets worse later, as disk sizes of 0 show up.

on line 144, change

if ( m/Size\s*:\s*((\d+\.?\d*)\s*(MB|GB|TB))/ ) {

to

if ( m/^Size\s*:\s*((\d+\.?\d*)\s*(MB|GB|TB))/ ) {

rerun script and get

OK: 0:0:RAID-5:3 drives:271.899GB:Optimal 0:1:RAID-1:2 drives:135.899GB:Optimal 0:2:RAID-1:2 drives:135.899GB:Optimal 0:3:RAID-5:3 drives:271.899GB:Optimal 0:4:RAID-5:3 drives:271.898GB:Optimal 0:5:RAID-5:8 drives:951.794GB:Optimal Drives:24 Hotspare(s):3

Thanks again for the great script, and sorry for the huge text wall!

We recently replaced a drive in our RAID array and about 2 weeks later I got a message similar to what you state in your description above:

WARNING: 0:0:RAID-5:4 drives:1394GB:Optimal Drives:4 (4 Errors)

What I am wondering is if those errors are listed out somewhere so I can see if it is something I need to address or not?

Thanks for a great plugin!
Ben