SSA & SCSI??

[bonsky]

i have one SSA disk with 4gb and one SCSI disk with 4GB also, Im running H70 machine with AIX 4.3.3, now, im trying to mirror my volume group residing at SSA disk currently with this SCSI 4Gb, but then eveytime i do a mirrorvg in smitty, the only disk it can recognize is itself.. he cannot see the SCSI 4gb. why? are they not compatible?
Note that the only disk without vgname define is this 4gb disk. Others have been configured with different VGname already...hmmmmmm.. what could be the problem?? any ideas?
thanks!

 

[crowe]

mirroring has to be done with disks in the same VG, meaning hdisk1 and hdisk2 need to be in the same VG in order to mirror one disk to the other.

crowe

 

[Guest_imported]

bonsky,

you may try this:

1. turn off quorum checking for VG you're about to mirror - so that if hdisk0 fails, hdisk1 will still be available after the boot.

chvg -a y -Q n rootvg

2. add a spare drive to rootvg for the mirrored copy.

extendvg -f rootvg hdisk1

3. create a copies fo the LVs in rootvg you wish to mirror.

mklvcopy hd4 2 hdisk1
mklvcopy hd1 2 hdisk1
mklvcopy hd2 2 hdisk1
mklvcopy hd3 2 hdisk1
mklvcopy hd6 2 hdisk1
mklvcopy hd8 2 hdisk1
mklvcopy hd9var 2 hdisk1

4. if you're using hd6 as the dump device, you must change the dump device.

sysdumpdev - /dev/newdumpdevice

(newdumpdevice=is an LV created to hold the dump)

5. create another /blv on the second drive.

mklv -y hd5x -t boot -a e rootvg 1 hdisk1
bosboot -a -l /dev/hd5x -d /dev/hdisk1

6. update the bootlist.

bootlist -m normal hdisk0 hdisk1

7. synchronize the copies.

varyon rootvg


NOTE: you can check by disconnecting hdisk0 and reboot the system.