Backups and recovery

[Larry Basford]

What are people using for system recovery?
We have L2000 servers on an EMC vg00 and vg01 (/tmp) is local no mirroring. 4mm and ultrium recovery tapes then DLT or Ultrium backups.

Is booting from the EMC a good choice ?
Mirror disk UX ?capabilities

Can L2000 be ignited from an ignite server? I have tried to set this up without sucess.
I understand they will not boot fron the lan.

Do you have hot spare server for a total unrecoverable system failure? (long duration time)

Sorry for the long vague questions it became a hot issue yesterday when it took 4 hours to recover a system.

[Pete Randall]

I use Mirror/UX on my root vg, mirroring on two internal drives, make ignite recovery tapes and run daily incremental Omniback backups, with weekly full backups.

That seems to do it for us.

Pete

[T G Manikandan]

Mirror-UX is the software on hp for mirroring.
You definitely require this to build mirror so that the downtime is prevented.
This will be really helpful in case of the disk failures.(H/W)

With mirror UX I would go with the IGNITE-UX.
You can build ignite tapes for igniting the server.
you can use the make_tape_recovery of the ignite utlity to create bootable recovery tapes so that the OS can be brought up in case of the software failures.

The other files and filesystems which are non-OS can be backup using the normal way.
Unrecoverable system failures can be prevented using products like Service-guard.

Thanks

[Vicente Sanchez_3]

Hi,

Most of our customers:

Mirror/UX in root vg.
Disk arrays/mirrored disks for data.
Ignite tapes all cases.
DDS3 for Ignite copies and quick backup
DLT/LTO for daily backups
Omniback/Veritas as backup tools.

Regards, Vicente.

[Robert-Jan Goossens]

Hi,

L2000
vg00 mirror/ux
ignite/ux
legato networker backup on dlt/8000
legato index on vg00.

Its just a choice.

Kind regards,

Robert-Jan.

[John Palmer]

Hi,

The L's have four internal drive bays (on two seperate SCSI buses).

For a production server, I'd go for a mirrored pair of internal boot disks rather than the EMC, the chances of you having to ignite (due to hardware failure) is then pretty negligible.

If the application is important enough then we use MC/Serviceguard to provide server resilience, different applications have different requirements. What sort of support cover you take out is also relevant.

I'd say that 4 hours to recover a complete system is pretty reasonable (depending on circumstances) especially if you keep your backup tapes offsite (you do don't you?)

Regards,
John