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disk upgrade on High Availability Disk Arrays Model 10

 
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giriplug
Frequent Advisor

disk upgrade on High Availability Disk Arrays Model 10

hi,

I would like to upgrade the disk in the HA disk array model 10 from 2gb to 4gb.This array is attached to a HP9000 K200 with OS 11.00.There is no mirroring on this current disks.What are the steps to change all this disk from 2gb to 4gb?Will it work if i do a backup and then replace all the 2gb disk with the 4gb disks and then restore the data in the 4gb?By the way the OS disk is the internal disk of the K200.....pls advise!
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Steven E. Protter
Exalted Contributor
Solution

Re: disk upgrade on High Availability Disk Arrays Model 10

Shalom nelanraj,

My advise is to back up all data first, remembering that databases like oracle must be shut down to get clean, usable backups.

Then I would follow this outline:

1)Backup
2)umount all filesystems effected
3)lvremove all logical volumes on the disks.
4)vgreduce current disks out of their current volune groups
5)replace the disks
6)pvcreate the new disks
7)vgextend volume groups onto the new and larger disks.
8)lvcreate/lextend/newfs new logical volumes then filesystems.
9) Mount the new filesystems
10) Restore data

Build a plan for dealing with filesystem capacity and possibly make the filesystems bigger if needed.

If this covers an entire volume group, vgexport and then vgcreate with appropriate -p parameter to get the most possible use out of your new disk.

With disk prices, if the array can handle larger disks, use larger ones.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
giriplug
Frequent Advisor

Re: disk upgrade on High Availability Disk Arrays Model 10

hi steven,

thx for the advice,need to know just one moree thing from you,do i need to be in single user mode to perform all this task?
Can i use vgcfgrestore once i have put in thee new disk?

Steven E. Protter
Exalted Contributor

Re: disk upgrade on High Availability Disk Arrays Model 10

Hello again nelanraj,

I see no reason to go into LVM mode for this work unless it involves the OS/root disk.

If you run into a problem and a resource is busy you can do the work in single user or logical volume maintenance mode.

---Instructions---
Boot at console
Intervene with keyboard at the 10 second prompt
bo
Y(Interact with the ISL)
hpux -is # single user mode
hpux -lm # logical volume maintenance mode
---end instructions---

Don't think this will require single user mode.

SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com