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Full Discussion: Backup software for AIX
Operating Systems AIX Backup software for AIX Post 302909795 by bakunin on Saturday 19th of July 2014 02:45:28 PM
Old 07-19-2014
Before you start searching for a product you might first find out your requirements. Take the following as a (not complete at all) list of questions you should try to find answers for:

- how many servers (LPARs) are to back up?

- how much data are to be backed up?
- daily
- weekly
- monthly
- quarterly
- yearly
Oftenly the surrounding environment (network lines, ...) is the limiting factor more than the capacity of the backup system itself. It might transpire that you need several network interfaces to provide enough bandwidth for you backup needs.

- how long do the data have to be stored and how much do you expect to hold in the backup system once it is "fully loaded"?
i.e. if you backup 1 GB every day and need to hold it for 1 month then you need to provide 31GB of space somewhere for this. How are you going to store all the data you back up? Tapes tend to work only for so long (as do CDs, disks, MO-drives, ...) and i.e. if you need to hold data for 10 years then putting them on a tape is probably a bad idea.

- do you have a certain timeframe for taking the backup and how long is it?
Some applications need to be online most of the day but have to be taken offline for the backup (databases, for instance). If you do not have enough time to take the backup you need to come up with something else: snapshots taken by SAN, incremental backups, "hot backups" (backup the DB inconsistently and use the archive logs to get it to a consisstent state) and some more procedures.

- how long is the restore allowed to take place?
Depending on the method you use for backup this may vary greatly. Take that into account when planning.

- What exactly do you want to do with the backups?
There are all sorts of backups: data, machine configurations, ... Do you want the backups to: let you restore the system once its hardware fails? Restore data only? If data, do you need to selectively restore certain files or just whole systems?

- Do you have ccertain legal requirements?
Certain companies (banks in the EU, for examples) have to store some data in a way which is not manipulatable once it is stored. There are specialized storage systems (EMCs Centera, for instance) to do this. You need to identify such a requirement (or other legal requirements for your backups) and take that into account.

OK, that was off the top of my head. Do not think the above list is in any way complete. It is just to show that there is more to the backup than meets the eye. Plan thoroughly and think about products only after you did that planning.

I hope this helps.

bakunin
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BACKUP_DELVOLSET(8)					       AFS Command Reference					       BACKUP_DELVOLSET(8)

NAME
backup_delvolset - Deletes one or more volume sets from the Backup Database SYNOPSIS
backup delvolset -name <volume set name>+ [-localauth] [-cell <cell name>] [-help] backup delvols -n <volume set name>+ [-l] [-c <cell name>] [-h] DESCRIPTION
The backup delvolset command deletes each volume set named by the -name argument, and the volume entries each contains, from the Backup Database. The backup listvolsets command lists the volume sets (and their volume entries) currently defined in the Backup Database. CAUTIONS
Deleting a temporary volume set is possible only within the interactive session in which it was created. Exiting the interactive session also destroys the temporary volume set automatically. OPTIONS
-name <volume set name>+ Names each volume set to delete. -localauth Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The backup command interpreter presents it to the Backup Server, Volume Server and VL Server during mutual authentication. Do not combine this flag with the -cell argument. For more details, see backup(8). -cell <cell name> Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see backup(8). -help Prints the online help for this command. All other valid options are ignored. EXAMPLES
The following command deletes the volume set called user and all volume entries in it: % backup delvolset user PRIVILEGE REQUIRED
The issuer must be listed in the /etc/openafs/server/UserList file on every machine where the Backup Server is running, or must be logged onto a server machine as the local superuser "root" if the -localauth flag is included. SEE ALSO
backup(8), backup_addvolentry(8), backup_addvolset(8), backup_delvolentry(8), backup_listvolsets(8) COPYRIGHT
IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved. This documentation is covered by the IBM Public License Version 1.0. It was converted from HTML to POD by software written by Chas Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell. OpenAFS 2012-03-26 BACKUP_DELVOLSET(8)
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