Forever forward and synthesizing full to tape

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Forever forward and synthesizing full to tape

Veeam Logoby roms » Thu Nov 27, 2014 4:47 pm

We bought VBR V8.0 and want to create backup copies of 10 virtual machines in the environment Vsphere 5.5. The total size of the VM's 4.5 GB, 3.2 GB occupied. We need to backup all 5 working days to disk (incremental) and at the end of the week to tape LTO-6. Our repository 13.6 GB and Retention Policy - 60 Restore points. I decided to use Veeam innovation and began using:
1. "Forever forward incremental" backup every 5 days a week (it is clear that the first backup is full).
2. Use the "Virtual Synthesized Full Backup to tape" a day later after the last incremental

Questions:
- If need to mark "Process incremental backup files" for synthesizing the last incremental to the new full VBK on tape?

- If during the week I decreased the size of the VM and translated them into an archive and the end of the week instead of 3.2 GB left 2GB capacity occupied in virtual machines that "Virtual Synthesized Full Backup to tape" will create a file on the tape VBK size of 2GB or remain around 2.9 GB was like a week ago?
roms
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Re: Forever forward and synthesizing full to tape

Veeam Logoby Dima P. » Thu Nov 27, 2014 5:15 pm

Hello Rachman and welcome to Veeam forums,
If need to mark "Process incremental backup files" for synthesizing the last incremental to the new full VBK on tape?

Yes
If during the week I decreased the size of the VM and translated them into an archive and the end of the week instead of 3.2 GB left 2GB capacity occupied in virtual machines that "Virtual Synthesized Full Backup to tape" will create a file on the tape VBK size of 2GB or remain around 2.9 GB was like a week ago?

If the changes applied before going to tape then yes.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby roms » Thu Nov 27, 2014 5:32 pm

Thanks
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Re: Forever forward and synthesizing full to tape

Veeam Logoby roms » Fri Nov 28, 2014 8:17 am

Attempt 1: "Process incremental backup files" checked- Result: all 5 VBI copyed to tape, but not synthesizing VBK .... My Retention policy is 60 restore points
Attempt 2: "Process incremental backup files" unchecked- Result: "nothing to backup"
Attempt 3: Return "Process incremental backup files" checking + Schedule tape job to "After this job" -> My_Backup_Job - Result: create .VSB file and synthesizing VBK to tape,
but leave all 5 incremental backups in tape.

What is? Bug?

Recommendations? Leaving aside innovations and move on "Synthetic Full + Transform" type of B2D or Veeam developers are already preparing Patch?
roms
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Re: Forever forward and synthesizing full to tape

Veeam Logoby v.Eremin » Fri Nov 28, 2014 8:29 am

Hi, Rachman, currently there are issues related to synthesized full backup. Thus, I would recommend opening a ticket with our support team and letting them confirm your environment. Thanks.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby wbauer84 » Mon Dec 01, 2014 11:03 am

Hi roms,

Just, if you didn't saw the other post of me in the forum:
We experience exactly the same problems, at two different 8.0 installations:
"process incremental backup files" NOT CHECKED: "nothing to backup (except there was in between a migration of an vib file into the vbk on HDD because of exceeding restore points)
"process incremental backup files" CHECKED: at least vbk + vib files (of this day), and in some cases ALSO he tries to backup MORE than one synthesized vbk file, which leads to, that our tape library with LTO-6 is written fully by one tape job, all 8 tapes! :(
case # open for this problems (at our customers):
# 00689913
# 00680258
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Re: Forever forward and synthesizing full to tape

Veeam Logoby roms » Mon Dec 01, 2014 6:46 pm

I temporarily moved to another type of backup: "Synthetic Full + Transform"
Could be left forever forward and do at the end of the week Active Full for later copying to tape, but it is a manual process.
I'm new to VEEAM, after many years of working with Symantec, the lost weekend
and sleepless nights I had very pleased with Veeam. I believe that the problem with synthetic full copy to tape will be fixed soon.
Thank you for your comment.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby saddison » Tue Dec 02, 2014 2:28 am

We are having a similar issue with our tape environment. Our jobs are creating multiple synthetic fulls to tape. One of our jobs is over 3TB. The full to tape tried to write 5 synthesized full backups to tape, for a total of 15TB of data. We have an open ticket as well (00688652).

At first, I thought it was going back and grabbing every incremental that was created on a particular day and creating fulls from those. One of our jobs did this. For example, if you have the synthetic full to tape created on a Saturday and had 4 previous incrementals that were created on Saturdays, it attempted to create 4 synthetic fulls from these. However, other jobs will attempt to create synthetic fulls from seemingly random days.

I have yet to find a pattern.

I hope a patch is coming soon. This great feature is not usable in it's current form.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby martynuk » Tue Dec 02, 2014 11:03 am

We have a similar, but not identical issue. We create weekly synthetic full backups on disk, and the backup to tape job is configured to copy these synthetic full backups to tape. Since upgrading to v8, each synthetic full backup is being sent to tape multiple times. The configuration of the backup jobs themselves hasn't changed. Veeam are investigating - Case # 00690220.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby roms » Fri Dec 05, 2014 11:52 am

Yes Martynuk, Synthetic Full created OK, but how it came to tape backup problems started:
1. Probably not erased the old files on the tape.
2. The job for some reason includes all reverse incremental files created as a result of Synthetic Full from VIBs.
I did not choose incremental backup files for this job.

Quest asked to insert another tape, since there is no longer space on the tape.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby v.Eremin » Fri Dec 05, 2014 12:00 pm

2) Have you implemented the hotfix already? Thanks.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby martynuk » Fri Dec 05, 2014 1:07 pm

I implemented hot fix KB1949. Prior to doing so i couldn't run the backup to tape job at all (the job repeatedly failed with "MediaPool not found (id: 00000000-0000-0000-0000-000000000000)." errors. Now I just get my full backups being copied to tape multiple times.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby Dima P. » Mon Dec 08, 2014 12:34 pm

Martin,

DEV team is looking at your case – once they find what the root of this issue is, support team will contact you with the details. Sorry for any inconvenience caused and thank you for your patience!
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Re: Forever forward and synthesizing full to tape

Veeam Logoby Dave338 » Tue Feb 10, 2015 4:12 pm

I have a similar issue.

When I launch the backup to tape job, with full virtual backup of "thursday", for example, it makes two virtual synthesized of two different thursdays (the two I have with my retention period).. I expected to do only last one, wich is the one I want to save to tape :)

When I enabled all days to be virtual synthesized, I launch the tape job once, and it creates 9 (my actual rest. points), virtual full backups on disk, which become 9 full backups on tape.
Any info on this behaviours??

Is there a method to make only one full synthesized on a week day (and omit others of same day)

REgards.
Dave.
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Re: Forever forward and synthesizing full to tape

Veeam Logoby Dima P. » Wed Feb 11, 2015 8:21 am

Hello Dave,
When I launch the backup to tape job, with full virtual backup of "thursday", for example, it makes two virtual synthesized of two different thursdays

It looks like expected - backup to tape checks the existing backup chain and creates a full backup from the increments from the day specified in the synthetic full backup schedule. For example if you run backup to tape once in two week for a backup to disk job it should create one synthesized full backups on tape for each week.
When I enabled all days to be virtual synthesized, I launch the tape job once, and it creates 9 (my actual rest. points), virtual full backups on disk, which become 9 full backups on tape.
Any info on this behaviours??

That is unexpected. You should get 7 synthesized full backups – one per each day. Please, check if you installed patch 1 and in case you did, please, open a support case.
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