ignite (make tape backup across whole FS)

[Petr Simik_1]

Hello,
What is the main reason why we use ignite only for restoring vg00 and not whole file system?
Everywhere is written folowing recomended method (see below).
I tried IGNITE over whole filesystem and if I put also scipts inside - making mirroring , automating manual work. I found it more faster recovery than using ignite/fbackup.
Q: What is the main reason why we use ignite only for restoring vg00?
Thank you for explanation.




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The whole pupose of ignite is to get you up and going with your base OS, aka vg00. It is not meant to be a complete backup strategy unto itself. I would write a script that would build the volume groups and logical volumes for you, then you could get away with doing the following:
1) Perform ignite recovery.
2) Execute script to build VGs and LVs.
3) Perform frecover.
4) Go have a beer while you waite on the restore. :)

Our Disaster Recovery procedures:
1 - Recover vg00 from ignite
2 - create non-root volume groups
3 - frecover non-root data
4 - recover database data from db backups
This is tested twice a year at Sungard.

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[Eileen Millen]

Hello Petr,

I think it is for the amount of space.
If you backup other volumes with Ignite, it takes up more space. The data on the other volumes will be changing more often and should be backed up daily.
With Ignite, you only really need to do an archive when you change something on the system. Like adding software or kernel changes.
Eileen

[Vicente Sanchez_3]

Hi,

Depending of the environment, you have to decide witch kind of backup strategie to implement.

If I loose a database, why do I have to reinstall the full environment with Ignite?
Obviously I have to recover my db from tar, cpio, fbackup, or any other tool.

If I want to reinstall my system, and I have all data (O.S and data) in VG00, I can do it with Ignite.

Or, as I know, If I have several VGs, Ignite only recovers VG00, so I need any other backup tool.

Regards, Vicente.

[James R. Ferguson · Accepted solution]

Hi:

COnsider this: If you confine your Ignite 'make_tape_recovery' contents to vg00, you have the ability to use this tape to recover your OS environment and then 'vgimport' your (otherwise intact) non-vg00 volumes. You can also use the recovery tape to clone your system. Limiting your recovery image to just vg00 provides the utmost flexability.

Regards!

...JRF...

[Pete Randall]

Petr,

I don't think there's anything wrong with your approach in a disaster recovery situation, but it doesn't address day to day backup issues (the forgetful user who deletes an important file, for example). You need to have another scheme for daily backup and, if you can use that scheme in combination with Ignite, so much the better.

Pete

[Petr Simik_1]

Thank you for good arguments explaining me this matter.

FullBackup of VG00 can be done only in single-user mode fbackup is also performed with stopped application.

We ussulay install HP-patches and patches to app several/year. Than we have to repeat fbackup action monthly. Than addapting to this procedure I need to do 2 part - backup using ignite anf than fbackup.
This costs more time and difficulty with ordering backups