Determining Raid on HP 11.11

[Ratzie]

We have a server that has two drives. I know our plan was to mirror these drives but I do not know if they are.
What is the command to see of they are being mirrored and what would be the command to do this.

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
disk 0 10/0/14/0.0.0 sdisk CLAIMED DEVICE TEAC CD-532E-B
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 10/0/15/1.5.0 sdisk CLAIMED DEVICE SEAGATE ST318203LC
/dev/dsk/c3t5d0 /dev/rdsk/c3t5d0
disk 2 10/0/15/1.6.0 sdisk CLAIMED DEVICE SEAGATE ST318203LC
/dev/dsk/c3t6d0 /dev/rdsk/c3t6d0


# strings /etc/lvmtab
/dev/vg00
/dev/dsk/c3t6d0

[Sanjay_6]

Hi,

Since there is only disk as part of vg00 in /etc/lvmtab, it is not mirrored.

Hope this helps.

Regds

[Pete Randall · Accepted solution]

Remember, mirroring via MirrorDisk/UX is done at the logical volume level. The surest way to tell if it's mirrored is to look at the logical volumes:

# lvdisplay /dev/vg00/lvol9 |more
--- Logical volumes ---
LV Name /dev/vg00/lvol9
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 1


The Mirror copies number indicates that this is lvol is mirrored.


Pete

[Patrick Wallek]

Well, since you only have 1 drive in VG00 I can guarantee you that the two drives are NOT being mirrored via LVM mirroring and you do NOT have any redundency with VG00.

For instructions on mirroring VG00 have a look at the LVM chapter of the Software Recovery Handbook here:

http://www1.itrc.hp.com/service/iv/docDisplay.do?docId=prodITRC/DE_SW_UX_swrec_EN_01_E/LVM.pdf

And look for the section on Mirror/UX and under that the Root Mirror section details the steps you need to take.

[Ratzie]

Thanks