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тАО06-24-2002 06:48 AM
тАО06-24-2002 06:48 AM
What commands are ideal when a full File System needs a backup compared to a few files or a few directories?
Solved! Go to Solution.
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тАО06-24-2002 06:55 AM
тАО06-24-2002 06:55 AM
Solutionhttp://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x77727e990647d4118fee0090279cd0f9,00.html
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x6b5768c57f64d4118fee0090279cd0f9,00.html
For more, try seraching the forum with serach string "bill hassell fbackup tar"
HTH
Duncan
I am an HPE Employee
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тАО06-24-2002 06:59 AM
тАО06-24-2002 06:59 AM
Re: File-System Backup- tar vs fbackup
For regular system backups, fbackup is the choice. It allows you to do incremental backup too and can spawn across multiple media.
Look at the following document
http://docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html
Section that says backing up and restoring the data. There is a comparison of all the utilities.
My vote goes to fbackup for regular scheduled backups.
-Sri
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тАО06-24-2002 07:00 AM
тАО06-24-2002 07:00 AM
Re: File-System Backup- tar vs fbackup
fbackup will also handle files larger than 2GB whereas tar will not.
You might consider downloading and installing the Gnu version of tar from any of the HP-UX Porting Centre's. It has much better error recovery, will handle large files, and is available on a large variety of platforms.
http://hpux.cs.utah.edu/hppd/hpux/Gnu/tar-1.13.25/
-----------------------------------------
If you are really serious about backups then you should look into a commercial backup system like OmniBack. This will allow fully automated backups and 'point-and-click' restores.
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тАО06-24-2002 07:05 AM
тАО06-24-2002 07:05 AM
Re: File-System Backup- tar vs fbackup
It depends on what do u want to achive.
Tar is a higly portable utility , incase you want to copy files and send it to antother amchine then tar is the best one , also this is one of the older utilities for backup so more stable and less cubersome . Thoug there are limitations like 2.0 Gb ( GNU tar doesnt ahve this )
However for systems backup and retrival fabck is better.
Manoj Srivastava
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тАО06-24-2002 07:09 AM
тАО06-24-2002 07:09 AM
Re: File-System Backup- tar vs fbackup
Thanks.
Duncan thanks for the Hassell thread it's good. In one of the threads he did not get any points.
Well out of order!
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тАО06-24-2002 07:15 AM
тАО06-24-2002 07:15 AM
Re: File-System Backup- tar vs fbackup
A free utility that will accomodate full and incremental backups is 'fbackup'. I choose this over 'tar' for the clear majority of uses.
'fbackup/'frecover' will allow the backup of inuse files and retry their backup 'maxretries' times if the timestamp noted on disk at the beginning of the backup is different once an image has been moved to tape. Further, if no "static" copy of the file can be transferred to tape, the copy of the file on the tape will be marked "bad" and you will *not* be able to recover it.
Graph files are easily created to specify what you want copied, and what you want excluded. Whole directories can be selected, and then individual files or subdirectories excluded. An index of the backup is written to the tape and can later be extracted to serve as a recovery graph templlate, too.
'fbackup' supports largefiles, too, something that 'tar' and 'cpio' don't do in their standard HP-released forms.
Regards!
...JRF...
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тАО06-24-2002 07:23 AM
тАО06-24-2002 07:23 AM
Re: File-System Backup- tar vs fbackup
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тАО06-24-2002 07:30 AM
тАО06-24-2002 07:30 AM
Re: File-System Backup- tar vs fbackup
'tar' is common-change. You can port a 'tar' tape to any flavor of Unix. 'fbackup'/'frecover' are HP-proprietary and hence you will not be able to take a 'fbackup' tape and 'frecover' it elsewhere.
As noted, already, the GNU version of 'tar' supports largefiles. In addition, PHCO_26423 for 11.11 implements support for up to 8GB archives.
Regards!
...JRF...
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тАО06-24-2002 08:53 AM
тАО06-24-2002 08:53 AM
Re: File-System Backup- tar vs fbackup
fbackup always rewinds the tape and starts a new write cycle. So you can not manage several save-sets on one tape.
You can write more tar archives to the same tape with the norewind device and positioning commands. This is usefull, if you need just to backup small amounts of data and do not want to use a new tape for each run.
But I have to admit, that I use fbackup through SAM in most cases.
Volker