You don't have to back up bsr files. True, they can be written after
backup job but they are also created for a restore job based on a file
selection, timerange selection and so on from the data stored in
catalog. So the bsr files are not necessary to back up as far as I know.
Another thing is the database backup. It's possible to import a media
without prior information in catalog but it requires reading of the
whole tape. And if you're not sure where is your database stored, you'd
have to rescan several tapes which would be quite time-consuming.
So it's IMO a good practice to have configuration backup (including
crypto material!) and catalog database backup available on a easily
accessible media (i.e. dumped onto a some directory NFS-exported from
another server). This way in case of a disaster you can easily restore
your bareos installation by simply reinstalling software, restoring
config files and loading database from dump.
It's also worth noting that archiving is a different process than
backup. Sure, you can use bareos for it but archiving process objectives
are different than backup. There is also hugely different time span that
you need to provide data availability for so you'd have to architect
your solution accordingly. YMMV but I'd try to go for more incremental
approach to copying data to tape but also focused on having multiple
copies of every instance of data (possibly at least three).
Best regards
MK
W dniu 16.05.2020 o 21:27, 'DUCARROZ Birgit' via bareos-users pisze:
I'm a total newbe in tape backup.
I wonder which is the best practice to store the bsr files and where to
backup the Catalog on a server with a single tape drive.
Would this be on the tape itself or somewhere on a HD / mount on the
server?
If I backup the Catalog on the tape after each backup, how easy would be
a restore?
Assuming you have archive drives which you will store for 10 years and
afterwards you install a new backup server, will you be able to re-read
these drives if the Catalog is directly on the tape or will this only be
possible if you migrated all the database on the new server?
How do you manage this?
I thought on the following concept (please tell me what you think about
that):
- for the database files, all bsr files and the Catalog Backup I tought
to mount an external share, which will be easy to migrate from one to
another bareos server.
- Tapes just for the volumes.
Thank you in advance for some hints.
Regards,
Birgit
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