Thank you Brock Palen and spadaj!
This helps me a lot!
Kind regards,
Birgit
On 17/05/20 23:33, Brock Palen wrote:
Similar here, I have used Bareos/Bacula for over 10 years, many restores, etc.
Added a single tape drive when switched to Bareos and client initiated
connections and easy encryption let me backup a lot more desktops for roaming
people.
Over that time I still dont’ quite understand when BSR’s come into play and
have never used one though I still write them to my local drive. I do not back
them up to tape.
As for Catalog, it’s backed up to it’s own Pool on disk, but an Run Script
then takes the volume and pushes it to a cloud provider with rclone. It along
with all the crypto information etc. This way I can run a bscan etc. and
recreate the catalog if needed in true DR.
I also changed around the catalog backup script it still just dumps to a text
file and backs that text file up. So fi the DB is just corrupted (on a
different disk) I have a SQL dump on the Director I can just import. If I
need to go further back I have the volumes (that only allow one job) on the
cloud I can download and run bscan on. Etc.
But yeah BSR’s still not sure what they are used for.
With tape if your using application managed encryption be very sure to backup
your configs with your encryption information. That key is used with the key
in the Catalog to decrypt (if I reading the docs right). So if you think your
backing up your Director for DR and planning on using bscan you wont’ be able
to because you wont’ have the key.
I keep that key (along with the creds for the cloud provider with the catalog
backups) in multiple places. You cannot lose those encryption keys. Same
applies to on disk encryption but I have not bothered with that only tape
encryption.
Brock Palen
1 (989) 277-6075
bro...@mlds-networks.com
www.mlds-networks.com
Websites, Linux, Hosting, Joomla, Consulting
On May 16, 2020, at 4:27 PM, spadaj wrote:
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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