[Tfug] Dell MegaraidSAS disk problem AyZACAw6YA

[Adrian]

On Thursday 02 February 2017 16:15:49 Nick Lopez wrote:
> > On Feb 2, 2017, at 3:25 PM, Adrian <choprboy at dakotacom.net> wrote:
> >
> > There are no options for JBOD/raid-less in the controller firmware.
> > Megaraid controller not releasing the drives to the OS or something else?
> 
>   yup, you either create raid volumes, or you might be able to switch the
>  whole controller to JBOD mode. PERCs/MegaRAIDs haven’t let you expose JBOD
>  drives unmolested. If they drives are blank, or at least not full, you can
>  create 1 drive RAID0’s on each one, but I think that wipes out the
>  partition table as well as the RAID metadata space at the end of the
>  drive. I might have a SAS6iR card you can borrow that might still fit the
>  newer servers’ RAID slot
> 

Yeah.. I know I used single unconfigured/unRAIDed drives on earlier 
PERCs/MegaRaids, as well as the individual drives themselves would show up as 
a generic sdx block device. But I hadn't touched a newer generation except as 
a full RAID volume. Don't really need a RAID card, just something with a SAS 
port to spin up drives.

I have a SAN that failed a drive, then immediately failed multiple replacement 
disks (within a minute or two of inserting the replacement). I suspect it is a 
backplane issue, but need to check the SMART on the individual drives... 
always a possibilty someone else threw bad pulls, still in their tray, back in 
the static bag and left on the servers as spares.


Adrian