We have a pair of 8400s which were setup in the following manner:
One of the 8400s is connected to a pair of HSZ70s, which are not running
in dual redundant mode. Each HSZ70 contains a number of JBODs and stripe
sets. These are mirrored across the controllers using LSM mirroring.
The other 8400 NFS mounts some of the disks from the first 8400. The
machines a connected via FDDI, but do not use ASE clustering - failover is
done manually by swapping over some cables, etc... It was originally
intended that we use ASE, but it was decided it wasn't worth it for our
needs, but by then LSM was already in.
We are now in the process of planning an upgrade of, amongst other things,
Tru64. We are currently on 4.0F and planning to go to 5.1. During the
process we'd like to remove the need for LSM. Partly because we don't
need it (or do we?) and partly because we don't like it (it has served us
well, but it's another layer of administration we'd rather not have).
What we'd like to do is remove the LSM mirroring, make the controllers
dual redundant and use hardware miroring. Is this possible without losing
data? Can we break the LSM mirrors, change the setup of the controllers,
add the spare disks (from the broken LSM mirrors) to create mirrors on the
HSZs, should we just vdump/reconfig/vrestore or should we just leave it
all as is?
Thanks,
Andrew
--
Andrew Moar : Ph +61 3 9479 1505 email A.Moar_at_latrobe.edu.au
Unix Environment Specialist, Information Technology Services
La Trobe University, Bundoora
Received on Thu Feb 22 2001 - 23:46:57 NZDT