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Would using alt_disk_install be a cleaner approach?

As a followup to this. If my rootvg is made up of 4 x 7GB disks from the old SAN, can I present a single 30GB disks from the new SAN and mirror the rootvg to the new SAN disk?

I've got some LPARs that have both their rootvg and data vg's via the SAN through the VIO server. We're looking to decommission the old SAN and present disks from the new SAN to the LPARs. Is it possible via mksysb or other utils to backup and restore the data from the old to the new SAN...

Thanks Mike. We use the HP supplied ODM file (currently XPARRAY_MPIO_ODM_5400I) which allows the devices to be correctly detected when cfgmgr is run. hdisk20 Available 04-00-02 XP MPIO Disk XP12000 (Fibre) The only thing that needs to be done after that is to set round robin with: chdev...

Yes, I'm well aware of how SANs work. SAN is not new to me. I've been managing SAN environments for nearly 10 years. LVM within AIX is new to me. I'm used to doing things with Solaris + Veritas VxVM. The HP XP12000 (rebranded Hitachi TagmaStore) we have doing raid 5 (7+1) with sets of 8 146GB...

Of course you'll see better performance if you are spreading the I/O out across multiple spindles. A single spindle is only capable of X amount of I/O compared to the sum of multiple spindles. That's also not what's been questioned here. What I have is 22 hdisks _total_ presented from the SAN...

Yes, these are SAN disks. The SAN disk groups are made up of 8 146GB disks in a group and then these groups have LUNS created from them. So what I have is 11 groups of 8 disks each and from those 11 groups, I have 2 disks from each group. My idea was that I would create a striped volume with...

I've got 22 hdisks that I'm going to create a striped volume from, but I'd like to make sure that my striping config is going to be optimal. The situation I'm dealing with is that the 22 disk really only come from 11 unique pools of disks from the backend storage system. So the question I have...

That's a great idea. I didn't know that was an option. It's working great now. Thanks.

Our new power6 based p570 appears to have the cd0 device attached to sata0 controller which is also part of the parent raid controller, which means I can't assign this controller to any of the new LPARs to see the cdrom device. I'm assuming there's some new way of sharing the cdrom device now...

Will mklvcopy allow me to attach a striped volume to a non-striped volume? If not, is there a way, without much downtime to migrate the data from vol_1 to stripevol_1 ? Thanks.