Hi 64ers,
We currently have a system running a pair of hsz70 raid controllers with
raid 5 disk sets. These physical disks are 9 Gb disk. The raid 5 sets are
mirrored between the controllers using LSM on advfs disks. We are going to
upgrade these physical disks this weekend to 36gb disks.
My question is; What is the best option for changing the disks?
One idea was to break the mirror, upgrade the disks on one controller,
recreate the mirror and when synced break and upgrade the other controllers
disk. This would have the advantage of no loss of data and effectively no
downtime BUT I suspect that doing it this way will keep the mirrored disks
at 9 Gb effectively and simply waste space on the 36Gb drives.
Second idea was to shutdown the systems, modify the disks, reboot the
systems with (hopefully) LSM mirroring the now larger raid5 sets. Then
simply restore the data from the backup (taken before starting ;-)).
Third was to bulldoze the system. Simply build it from the bottom up with
new disks and restore.
Option four???
Any help and/or recommendations from the group would be very beneficial
Wayne Blom
Systems Specialist
IT_at_HEALTHCARE
F H Faulding & Co Limited
email: wayne.blom_at_au.faulding.com
pmail: Wayne Blom, 115 Sherriff St, Underdale, SA, 5032
earmail: +61 8 84083656
Received on Thu Oct 18 2001 - 03:31:16 NZDT