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Incremental Tape Backup not working

Thread solved

Good day,

We are currently experiencing the following problem with Acronis Cyber Backup Version 12.5.16545:

We regularly write backups of various individual folders (file backup) from our Windows file server. The first backup is full, all other backups are incremental, which works perfectly.

Recently, we would like to write the written backups to tapes as a second storage location. This means that all previously written file backups from the file server are transferred to the tapes. And this is exactly where the problem lies. While the backup to the backup server is incremental as set, the backups to tapes are always written fully. Sometimes it happens that a tape backup is written incrementally, but without any comprehensible logic.  While the backup server with 6 backups only uses around 190GB, it is 950GB on the tapes.

This is suboptimal, because backing up to tapes takes much longer and requires a lot more storage space.

We have gone through all the settings but cannot see what exactly triggers this phenomenon with the tapes.

Attached are screenshots that show the problem. The export of the backup plan is also included.

Should further information be required, we will provide them. We would be very pleased for some help.

Thank you.

Attachment Size
Acronis Tapes1.png 83.33 KB
Acronis Tapes2.png 83.4 KB
Acronis Tapes3.png 84.06 KB
Acronis Tapes4.png 83.05 KB
Acronis1.png 68.47 KB
Acronis2.png 66.74 KB
Acronis3.png 67.61 KB
Testbackup Export.txt 27.37 KB
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Comments: 1727

Hello!

Welcome to the forum!

The retention rules work in a different way when you choose the tape as location. It's not possible to make it the same way as when you select your local disk for storage.

Please check the following user-guides: 

https://www.acronis.com/en-us/support/documentation/AcronisCyberBackup_…

https://www.acronis.com/en-us/support/documentation/AcronisCyberBackup_…

  • Backups stored on tapes are not deleted until the tape is overwritten.
  • If you select the following retention rules in the plan: By total size of backups

    Specify the maximum total size of backups to keep.

    This setting is not available with the Always incremental (single-file) backup scheme, or when backing up to the cloud storage, an SFTP server, or a tape device.

  • The consolidation of backups located on tapes is not possible. As a result, the Always incremental backup scheme is unavailable when you back up to tapes.

  • The software cannot automatically overwrite a tape that contains at least one non-deleted backup or if there are dependent backups on other tapes.

Please let me know if this answered to your query.

Thanks in advance!

Hello Jose,

Thank you very much for the quick and detailed answer.

I completely lost sight of the fact that file level backups always take place in a backup container, so they are always consolidated. This would also explain why the tapes are always written fully, as described in the respective knowledge base articles..

Now my actual question:

We back up a file server with Acronis via "Files/Folders". This server contains almost 30TB of data, which we have to write to tapes from time to time. Is there a convenient method or option so that we do not have to completely write full tape backups every time, so that they can be written incrementally? A complete backup on tapes takes about a week, and we want to avoid that at all costs.

Many thanks.

frestogaslorastaswastavewroviwroclolacorashibushurutraciwrubrishabenichikucrijorejenufrilomuwrigaslowrikejawrachosleratiswurelaseriprouobrunoviswosuthitribrepakotritopislivadrauibretisetewrapenuwrapi
Posts: 2
Comments: 1727

KekEW wrote:

Hello Jose,

Thank you very much for the quick and detailed answer.

I completely lost sight of the fact that file level backups always take place in a backup container, so they are always consolidated. This would also explain why the tapes are always written fully, as described in the respective knowledge base articles..

Now my actual question:

We back up a file server with Acronis via "Files/Folders". This server contains almost 30TB of data, which we have to write to tapes from time to time. Is there a convenient method or option so that we do not have to completely write full tape backups every time, so that they can be written incrementally? A complete backup on tapes takes about a week, and we want to avoid that at all costs.

Many thanks.

Hello . Unfortunately the tapes won't offers us many option in that case.

Probably this could help as alternative:

https://kb.acronis.com/content/68066

https://kb.acronis.com/content/59315

Thanks in advance!

 

Hello Jose,

thanks again for your help. All questions have been answered, so we can find a solution for this independently.

Greetings :)

frestogaslorastaswastavewroviwroclolacorashibushurutraciwrubrishabenichikucrijorejenufrilomuwrigaslowrikejawrachosleratiswurelaseriprouobrunoviswosuthitribrepakotritopislivadrauibretisetewrapenuwrapi
Posts: 2
Comments: 1727

You are welcome.

Feel free to post anytime.

Thanks!