Backup to Tape always FULL

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Backup to Tape always FULL

Veeam Logoby jbrullemans » Thu Oct 26, 2017 7:26 am

Hi,

Because of the increase of ransomware around the world the only way to have a complete offline backup is in mine opion still a tape solution. Backup to the cloud can still be compromised if credentails are cracked.
Currently our backup jobs are forward incremental with active full on saturday.
So what i would to achieve is that on working days a the full backup chain (or virtual full) is backupped to the tape streamer. So on monday it is the Full of sa with incrementals of su-mo. on tuesday it is : full of saturday and incrementals of su-mo-tu etc. etc.

Does anyone know how to configure this? i tried virtual full on every day but that doesn't seem to work. I don't want to backup only the incremenals because in case of a disaster this could result in using 6 tapes to restore.

The physical setup for this will be : local server with 12 or more hd spindels with local attached VTL LTO7.
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Re: Backup to Tape always FULL

Veeam Logoby v.Eremin » Thu Oct 26, 2017 11:56 am

i tried virtual full on every day but that doesn't seem to work

What specific issues you encountered with daily virtual full backup? What backup mode does a source backup job use?
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Re: Backup to Tape always FULL

Veeam Logoby jbrullemans » Thu Oct 26, 2017 12:41 pm

Hi,
The problem with daily virtual full is that is doesn't do a daily full it just writes the incremental to tape.
The source backup mode is forward incremental with active full on saturday.
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Re: Backup to Tape always FULL

Veeam Logoby v.Eremin » Thu Oct 26, 2017 1:05 pm

Try to switch:

1) Either to reversed incremental mode
2) Or to forward forever incremental and daily virtual full backup

This way, the .vbk file will be copied or created on tapes on everyday basis.

Thanks.
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Re: Backup to Tape always FULL

Veeam Logoby jbrullemans » Thu Oct 26, 2017 1:11 pm

Hi Eremin,

That is exactly what i don't want. Revesere incremental is to slow.
but forward forever you mean? don't do active or synthetic full and use virtual full for tape? Aint there another way? forever incremental is a little bit scary i think beause the you never reset the backup chain.
John
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Re: Backup to Tape always FULL

Veeam Logoby v.Eremin » Thu Oct 26, 2017 4:16 pm

don't do active or synthetic full and use virtual full for tape?

Correct.

Aint there another way?

I doubt that you will manage to copy full backup daily with any other approach.

forever incremental is a little bit scary i think beause the you never reset the backup chain.

With periodic SureBackup and health checks, you should be OK.

Thanks.
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Re: Backup to Tape always FULL

Veeam Logoby lyapkost » Fri Oct 27, 2017 7:40 am

jbrullemans wrote:Aint there another way?
Hi John. If a source job is forward incremental with periodic fulls enabled the tape job won't write synthetic fulls. That's by design (see note).

As a trick you may try to use in the tape job a pre-job powershell script which disables synthetic fulls in the source job and a post-job script which enables them again.
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