Creating 10.20 Boot Disk on 11.0 Machine?

[Larry Snider]

I have a HP-UX 10.20 machine that had a two-disk failure last week. Unfortunately, these are the boot disks and the previous admin did not have an ignite recovery tape. This machine is the only 10.20 machine on the network but we have all the information on the tape backups. We do, however, have three 11.0 servers on this network.

I need to be able to build these disks and bring the server back online. Are there enough similarities between 11 and 10.20 to be able to mount the new disks on one of the 11.0 machines, make it bootable, create the volumes et al, restore from tape, and have the disk work correctly?

[RAC_1]

I do not think it would be possible to create it from 11. But If I remember correctly, certain versions og Ignite support 10.20. Particulary old versions. The question will be where to get it..

Anil

[Sanjay_6]

Hi Larry,

you cannot do that. Unless you have an ignite recovery tape for 10.20 server, you won't be able to restore the OS on the disk and make it bootable under 10.20.

Even if you have a network archive of this server using make_net_recovery, you would be able to recover, else installation from scratch is the only option.

Hope this helps.

Regds

[Pete Randall]

I would look at it as an opportunity to upgrade to a supported OS. Install 11i and vgimport any other vg's, then restore any required files. Without a recovery tape, that's about all you're going to be able to do.


Pete

[A. Clay Stephenson]

This would be an extremely long shot at best although it just might be doable if you can install the disks in an 11.0 server. You would need to then restore the 10.20 (e.g. mkboot) commands on an 11.0 box and use them to create the boot disks. You would then need to create an VG and the LVOLS and any vxfs filesystems would have to be version 2. After that, you should be able to restore from backup to the new disks. Again, it just might be barely possible but if this were me I would do a cold install from 10.20 media.

[Larry Snider]

Unfortunately, this machine is supporting a legacy project and therefore cannot be upgraded.

Would it be possible to create a boot disk and all the volume information on another machine and then bring it over to the 11.0 machine for the restoration? How would I read in the volume information from the disk?

[Sanjay_6]

Hi Larry,

A cold reinstallation from scrach using the install media would be a better choice.

Once the server is re-intalled, restoring the custom configuration files can be done from the backup. However be careful that you do not overwrite stuff that you shouldn't.

Hope this helps.

Regds

[Andrew Rutter]

hi larry,

if it was me i wouldnt risk it. Not only would be alot longer to do if it did work (which I doubt). But I wouldnt be sure I was going to run into problems later when the box is in use, thus causing even more downtime.
There is quite a few differences between 10.20 and 11.0 especially the kernal.

You need to do a cold install in my opinion from cd. You can modify your vg and lvol's as required at the same time and then restore the other config from the tapes.
Install ignite and then create a full backup tape.

Andy