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Shestakov
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Re: The need for Active Full backups

Post by Shestakov » Nov 25, 2016 2:14 pm

Damn - We're doing the opposite of that. We have a 30 restore point Forever Incremental strategy on Primary Fast Storage, and 7 restore points + 4x Weekly & 24x Monthly GFS on a Data Domain.
I would recommend 7-14 restore points on the source site and 30 restore points + 24x Monthly GFS on a Data Domain.
Does that mean, if I have Backup Copy's from the primary storage to the Data Domain - and the Data Domain organizes the Restore Points into GFS backups - I can switch off Health Checks on the Data Domain Backup Copys?
Health check and Surebackup are different things. Health check is a part of backup copy job and going to help with data integrity.

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Re: The need for Active Full backups

Post by lando_uk » Nov 25, 2016 3:53 pm

I once had a corruption on primary, just one VM in the job had errors, the rest were fine and the only way I find it was a restore test (or surebackup ) or to run the cmd " Veeam.Backup.Validator" against the job. The Copy Job didn't spot this corruption and happily copied it offsite.

For your reassurance, the VBK didn't just go `bad` for no reason, we had a dead HDD in the RAID6 causing the whole server to stop and need a restart to fix, the VBK corruption happened after that event. We now run a Veeam.Backup.Validator task on all jobs when a HDD dies as a precaution, but it can sometimes take a week to check everything. :roll:

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Re: The need for Active Full backups

Post by ferrus » Nov 25, 2016 3:56 pm

I was hoping for a different answer :|
Have a VM that's takes 13 days for a Health Check on a Data Domain. Desperately trying to find a way round it - 'cos that's half the month's backup copies lost.

Just wondered whether the combination of checking during the backup copy, and merging into full GFS backups would negate the Health Check requirement.

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Re: The need for Active Full backups

Post by lando_uk » Nov 25, 2016 4:04 pm

This is my biggest worry. I have to tell the business we are 95% sure the backups are good, but there's not enough time to check if they are all good.

To increase the 95%, I'm trying to convince them to invest in a 2016 S2D ReFS cluster with self healing, but even that cant be 100% error resistant.

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Re: The need for Active Full backups

Post by ferrus » Nov 25, 2016 4:15 pm

Sounds good. With a lot of space consolidation and temporary backup repo migration, I think I can migrate to 2016 - but it still leaves us in the same situation with the Data Domain.

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Re: The need for Active Full backups

Post by lando_uk » Nov 25, 2016 4:20 pm

I wonder if ReFS 3.1 also improves the Veeam.Backup.Validator or Health Check performance, maybe there will be enough time in the day to check everything?

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Re: The need for Active Full backups

Post by mkretzer » Nov 25, 2016 7:27 pm

Is Health Check even necessarry with integrity streams?

Gostev
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Re: The need for Active Full backups

Post by Gostev » Nov 25, 2016 10:43 pm

Only on simple ReFS volumes (for its backup healing functionality).

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Re: The need for Active Full backups

Post by dellock6 » Nov 26, 2016 2:47 pm

As far as I know you can enable mirror and parity modes also on single windows 2016 servers, without storage spaced direct.
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Re: The need for Active Full backups

Post by pirx » Nov 28, 2016 7:57 am

Shestakov wrote:Hi pirx,
please read the thread for the explanation of full backups vs. surebackup best practices.
I would emphasize that it`s recommended to keep a short chain on the primary repository for faster restores and longer chain on the secondary repository for restores of historical data.
Thanks!
But what would be the "best" way to archive the goal to have each backup (at least 10 weekly) 2 times for 10 weeks, one on NetApp A, the other on NetApp B? If we have a primary chain with 14 restore points on NetApp A and a BJC with 10 weeklies on NetApp B, we miss this goal. Do we need a second BJC that also performs a copy of the primary backup job to the same NetApp A? This sounds not very backup space friendly.

Shestakov
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Re: The need for Active Full backups

Post by Shestakov » Nov 28, 2016 11:52 am

If you want 10 weekly backups on both primary and secondary repository, the best way indeed is 2 backup copy jobs. I would still set 7-14 restore points on the source backup job and 2 simple + 10 weekly GFS on the backup copy job pointing to the primary storage. Note that you need to create a separate folder on the primary repository and add it as another repo since it`s prohibited for backup copy job to set same repository as source and target.
Thanks!

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[MERGED] Best Practice for Disk Backups

Post by iburnell » Aug 19, 2018 8:13 am

Is a Synthetic Full good with daily incremental good enough to ensure integrity?
- Should we be creating periodic active full
- Should I tick box to do Health Check
- Is reverse incremental an idea i.e. to keep the full to always be the latest

Thanks

Shestakov
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Re: The need for Active Full backups

Post by Shestakov » Aug 19, 2018 8:51 pm

Hi Ian,
please review the answers above. I would recommend to start from this one.
Thanks

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[MERGED] Integrity of disk backups

Post by iburnell » Aug 27, 2018 5:57 am

Our Disk backup job run daily Forward Incremental with Synthetic Full on a Friday. I want to ensure the data is good. Questions
1. Given the synthetic full backup is always "synthetic" is it better practice to do periodic active full backups. Is this doing a brand new full from VSphere rather than chaining the .VIB files?
2. What about the maintenance options. Is it a good idea to tick box to perform backup health checks. Also how about defragment and compact full backup

Thanks

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Re: Integrity of disk backups

Post by DGrinev » Aug 27, 2018 12:03 pm

Hi Ian,

Please read the existing discussion with the answers you're looking for, starting from the post by the link above. Thanks!

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