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system image backup in red hat linux

Rommel T. Misa_2
Frequent Advisor

system image backup in red hat linux

Is there a tool/command in red hat linux I could use to back up the system image (OS) of the server similar to Ignite-UX in HP-UX or mksysb in AIX? If there is none, how can I backup the OS in such a way that I could restore from tape?

Hope you could help.

Thanks,
ROMMEL
6 REPLIES
Atul Gautam
Valued Contributor

Re: system image backup in red hat linux

Rommel,

You can probably use "cpio", "dd", "backup", "restore" and "tar" utilities.

1) cpio --> Takes a very long time but you can extract selected files.
2) dd --> Good one and creates an exact copy but you'll not be able to extract selected files from that image.
3) backup --> Normal backup utility.
4) restore--> Normal restoration utility.
5) tar --> Most common but you cannot include special files.


Beside this, get proper advice from other xperts as well.


--
Atul
Jaime Bolanos Rojas.
Honored Contributor

Re: system image backup in red hat linux

Rommel,

Asumming your data is on a different disk than the OS, I would go with the dd command.

Just dd it to another disk, then at anytime you might have a problem with your OS, just take the bad disk out and put the image done with dd in and it should work fine.

Regards,

Jaime.
Work hard when the need comes out.
g33k
Valued Contributor

Re: system image backup in red hat linux

Jammie

Isn't there problem with diferent block size?

So he should have "backup disk", with same filesystem and also with same block size than it will be perfect solution... ofcourse if he will have dd in cron to make bakups regulary ofcourse.
Craig Gilmore
Trusted Contributor

Re: system image backup in red hat linux

You might want to check mondorescue. The website is www.mondorescue.org.

This tool will create an image that you can use to rebuild your system. It has the capability to build a tape image. I've used it to create CD's and DVD's but I haven't used the tape capabilitites.
Jorge Cocomess
Super Advisor

Re: system image backup in red hat linux

If your server system disk is mirrored, you can replace the second disk with the new disk and save the one you pulled out for safe keeping.

Any thoughts on this method?

Jorge
Ansari27
Occasional Visitor

Re: system image backup in red hat linux

This method is good but again you have no out of system backup for your configuration done on the system.