Discussions specific to tape backups
dannythake
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Re: Veeam 7 tape and verify

Post by dannythake » Apr 29, 2015 10:59 am

Thanks Vlad,

To confirm, I need to update to Patch 2 before I install the private fix?

Thanks

v.Eremin
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Re: Veeam 7 tape and verify

Post by v.Eremin » Apr 29, 2015 11:07 am

Yep, you need to install update 2 first.

As to the private fix, it's being developed at the moment. You will be provided with it, when it's ready.

Thanks.

dannythake
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Re: Veeam 7 tape and verify

Post by dannythake » Apr 29, 2015 11:07 am 3 people like this post

Thanks for your assistance Vlad

v.Eremin
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Re: Veeam 7 tape and verify

Post by v.Eremin » May 06, 2015 2:36 pm

Hi, Danny, as far as I'm aware, the private fix has been just developed, so you should be provided with it pretty soon. Thanks.

dannythake
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Re: Veeam 7 tape and verify

Post by dannythake » May 06, 2015 3:46 pm

Hi Vlad,

Tested fix, still cannot complete a catalog:

5/6/2015 4:21:38 PM Processing started at Wednesday, May 06, 2015 4:21:34 PM
5/6/2015 4:21:46 PM Drive 1 (Drive ID: Tape0) locked successfully
5/6/2015 4:22:02 PM Performing inventory for tape in Drive 1 (Drive ID: Tape0)
5/6/2015 4:24:44 PM Reading tape Tape 3 catalog
5/6/2015 4:24:51 PM Moving tape Tape 3 to media pool Imported
5/6/2015 4:24:51 PM Reading tape metadata
5/6/2015 4:25:04 PM Error: No connection could be made because the target machine actively refused it 192.168.100.12:443 <------------This is our enterprise Manager Server
5/6/2015 4:25:04 PM Error Completed with error at Wednesday, May 06, 2015 4:25:04 PM

Not entirely sure why is needs to communicate with a server at our other site (that would be unavailable if we were in DR situation!)

Support Engineer notified.

Dima P.
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Re: Veeam 7 tape and verify

Post by Dima P. » May 07, 2015 1:58 pm

Danny,
It looks like a separate issue – could you, please, attach a new portion of logs to the existing case? I’ll ask dev team to take a look once done.

dannythake
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Re: Veeam 7 tape and verify

Post by dannythake » May 07, 2015 2:03 pm 1 person likes this post

Hi Dmitry,

It was indeed a separate issue from the original issue. Unfortunately we didn't find the second issue until the private fix was installed. I had an Engineer run a cleanup of the SQL Server DB, which cleared the problem. Looks like some stale records of an old vCenter installation were causing it.

I have managed to now restore a very small VM successfully, but will test further in the morning with our Production Backup Set

Dima P.
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Re: Veeam 7 tape and verify

Post by Dima P. » May 07, 2015 3:33 pm

Danny,

Glad to hear you are up and running now. Keep us posted if you face any issue or questions.

icetrain
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Re: Veeam 7 tape and verify

Post by icetrain » Sep 05, 2017 9:09 am

Do I understand you correctly, that there is no verification available for backup to tape jobs?

v.Eremin
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Re: Veeam 7 tape and verify

Post by v.Eremin » Sep 05, 2017 12:36 pm

Correct. However, most of the tape devices have quite comprehensive write verification mechanisms. So, you should be good, as long as you verify source backup data via SureBackup, before it gets archived to tapes. Thanks.

icetrain
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Re: Veeam 7 tape and verify

Post by icetrain » Sep 05, 2017 1:57 pm

This means there are no definite plans to support this software wise?

v.Eremin
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Re: Veeam 7 tape and verify

Post by v.Eremin » Sep 05, 2017 3:17 pm

Not at the moment.

icetrain
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Re: Veeam 7 tape and verify

Post by icetrain » Sep 06, 2017 12:02 am 1 person likes this post

Maybe I have missed something, but I still don't understand why you would skip adding such a feature.

There is always the possibility of a bit error, and even NRE - even on tape. How checking the source backup would prevent those NRE happening on tape is out of my mind right now.

v.Eremin
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Re: Veeam 7 tape and verify

Post by v.Eremin » Sep 06, 2017 10:39 am

Since we don't have infinite development and QA resources, we always have to skip this or that particular functionality. Less demanded features are prone to such destiny. Thanks.

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Re: Veeam 7 tape and verify

Post by pshute » Oct 10, 2018 10:47 pm 1 person likes this post

Are there still no plans to implement this? The first tape drive I ever bought, back in 1987, was advertised as having a built in read after write feature, but the backups were still often unreadable, probably because the backup software was getting something wrong. Built in tape drive verification only makes sure it's backed up what it's been told to backup. It doesn't know if it's correct or not.

In those days we were backing up directly from filesystem to tape, so the verification had to be done overnight before people started work in the morning, changing files and causing them fail the software verification. These days we backup to a single file on disk, and the backup file is available all the next day for comparison with the file on the tape. It's surely not a difficult feature to implement. It's just reading from tape while comparing to a file on disk. It doesn't need to do a full restore first, it could compare a few GB at a time and discard the verified data as it goes to save disk space.

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