[Info-vax] Smartarray 5300 & hot spare

[Steve]

On 17 Dec, 23:18, gartmann <gartm... at immunbio.mpg.de> wrote:
> Hello,
>
> we have a SmartArray 5300 controller with 16 disks. The disks are
> divided into three units with five drives each and the remaining disk
> is assigned as a hot spare to all three arrays.
>
> Now one drive failed and the unit stopped workin and therefore the
> drive on OpenVMS failed as well.  I thought the spare drive should
> have been used in such a case? Or what is wrong here:
>
> Unit 0:
> In PDLA mode, Unit 0 is Lun 0.
> Cache status      : enabled
> Max Boot Partition: Unknown
> Volume status     : VOLUME failed
> 1 Data Disk(s) Failed or Removed:
>    Disk 1: (SCSI bus 0, SCSI id 1)
> 5 Data Disk(s) used by lun 0:
>    Disk 0: Partition 0; (SCSI bus 0, SCSI id 0)
>    Disk 1: Partition 0; (SCSI bus 0, SCSI id 1)
>    Disk 2: Partition 0; (SCSI bus 0, SCSI id 2)
>    Disk 3: Partition 0; (SCSI bus 0, SCSI id 3)
>    Disk 4: Partition 0; (SCSI bus 0, SCSI id 4)
> Spare physical drives:
> 1 Spare Disk(s) used by lun 0:
>    Disk 209: (SCSI bus 2, SCSI id 9)
> Logical Volume Raid Level: RAID 5.  Distributed Data Guard
>                            stripe_size=16.0KB
> Logical Volume Capacity : 1117.56 [1199.97] GB
>
> Unit 1:
> In PDLA mode, Unit 1 is Lun 1.
> Cache status      : enabled
> Max Boot Partition: Unknown
> Volume status     : VOLUME OK
> 5 Data Disk(s) used by lun 1:
>    Disk 6: Partition 0; (SCSI bus 0, SCSI id 6)
>    Disk 8: Partition 0; (SCSI bus 0, SCSI id 8)
>    Disk 9: Partition 0; (SCSI bus 0, SCSI id 9)
>    Disk 200: Partition 0; (SCSI bus 2, SCSI id 0)
>    Disk 201: Partition 0; (SCSI bus 2, SCSI id 1)
> Spare physical drives:
> 1 Spare Disk(s) used by lun 1:
>    Disk 209: (SCSI bus 2, SCSI id 9)
> Logical Volume Raid Level: RAID 5.  Distributed Data Guard
>                            stripe_size=16.0KB
> Logical Volume Capacity : 1117.56 [1199.97] GB
>
> Unit 2:
> In PDLA mode, Unit 2 is Lun 2.
> Cache status      : enabled
> Max Boot Partition: Unknown
> Volume status     : VOLUME OK
> 5 Data Disk(s) used by lun 2:
>    Disk 202: Partition 255; (SCSI bus 2, SCSI id 2)
>    Disk 203: Partition 0; (SCSI bus 2, SCSI id 3)
>    Disk 204: Partition 0; (SCSI bus 2, SCSI id 4)
>    Disk 206: Partition 0; (SCSI bus 2, SCSI id 6)
>    Disk 208: Partition 0; (SCSI bus 2, SCSI id 8)
> Spare physical drives:
> 1 Spare Disk(s) used by lun 2:
>    Disk 209: (SCSI bus 2, SCSI id 9)
> Logical Volume Raid Level: RAID 5.  Distributed Data Guard
>                            stripe_size=16.0KB
> Logical Volume Capacity : 1117.56 [1199.97] GB
>
> Regards,
>    Christoph Gartmann

Hi Christoph,

Your config strikes me as a little odd on VMS versions of the
SmartArray 5300A - you can't share spare disks around the LUNs
successfully on these cards.  It's one spare disk per LUN and one LUN
per spare disk.

This may be why you've seen a problem, though the array should still
present the disk with a RAID5 set losing one spindle assuming that all
of the others are still working properly.

Steve