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Top Forums UNIX for Advanced & Expert Users AIX + disk redundency input needed Post 5946 by Optimus_P on Monday 27th of August 2001 04:07:26 PM
Old 08-27-2001
AIX + disk redundency input needed

OK guys & gals this is the issue: i am trying to sort out all the disks in all of our AIX servers.

12 hdisks w/ mirroring (so only 6 disks in uses @ any time)

2 volume groups (rootvg, vg1)

this does include muliple informix databases and misc. data.

Do you think it would be wise to break the mirror and go with a striping w/ parity? or should i stick w/ the mirroring as it is right now?

Backups (level 0) are done on all Logical Volumes (filesystems) nightly. Data loss is not permitted. Can i have some of your guys input as to what you think would be best.

I want to lean toward striping w/ parity so if a disk fails i can swap it out on the fly and lose no data. and gain some disk space.

Last edited by Optimus_P; 08-27-2001 at 05:13 PM..
 

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VGREDUCE(8)						      System Manager's Manual						       VGREDUCE(8)

NAME
vgreduce - reduce a volume group SYNOPSIS
vgreduce [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi- calVolumePath...] DESCRIPTION
vgreduce allows you to remove one or more unused physical volumes from a volume group. OPTIONS
See lvm for common options. -a, --all Removes all empty physical volumes if none are given on command line. --removemissing Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes normal operation of the volume group (new logical volumes may again be created, changed and so on). If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove them manually, you can run this option with --force to have vgreduce remove any partial LVs. Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those parts that lie on disks that are still present. If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti- vating your logical volumes with --partial as described in lvm (8). SEE ALSO
lvm(8), vgextend(8) Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) VGREDUCE(8)
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