Best Practice for MS Server 2012 DeDup Repo

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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby push3r » Tue Apr 14, 2015 4:27 pm

lightsout wrote:I turned off compression for my backup copy jobs too, as that goes to a HW dedup device.


But I am sending my Backup Copy Jobs across the WAN. Any suggestions?
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby lightsout » Tue Apr 14, 2015 4:30 pm

That is the downside in that it does create more LAN traffic. I do get higher dedup ratios on my storage without it though.

Given you've got WAN acceleration though, I would suspect leaving it off is ok.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby v.Eremin » Tue Apr 14, 2015 5:21 pm

Should I use "None" for Backup Copy Job too?

Why not to leave compression as is, but enable "Decompress backup data blocks before storing" option in the setting of the given repository? This way the data will cross the wire in compressed state, and will be decompressed at the repository's site.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby push3r » Tue Apr 14, 2015 7:58 pm

v.Ermin,

Thanks for the tip. I forgot about those settings in the Repository.

Is there some sort of best practice pdf from Veeam for stuff like this? Useful information scattered everywhere in the forum.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby Shestakov » Tue Apr 14, 2015 9:50 pm

push3r wrote:I am wondering, with 100Mbps WAN connection, Direct would be better? But Bandwidth saving is not as good as through WAN Accelerators? I don't have any Bandwidth Quotas limitation; so, it seems Direct would be better?

If you have Enterprise Plus Edition, I would suggest to use WAN Acceleration, it can give up 50x traffic savings, what`s especially useful for 100 Mbps bandwidth and big data transmission.
Thanks.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby push3r » Tue Apr 14, 2015 11:17 pm

Yes, I have Ent Plus License. I did some more reading and saw that 100Mbps and below should use WAN Acceleration. Thanks.
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[MERGED] Server 2012 dedupe - synthetic full/reverse incerme

Veeam Logoby conradblack » Mon Jun 22, 2015 4:07 pm

Heya,

I have some inquiries about using Windows Server 2012 deduplication alongside Veeam.

I've read Veeam documentation, and I am under the impression that it is recommended to not use reverse incremental/synthetic fulls with Windows deduplication. I'm curious about forever forward incremental. When the max amount of restore points is met, the oldest increment gets merged into the full vbk.. isn't this the same process as making a synthetic full? Is this process supported with dedupe volumes?

Also, using virtual full synthetic to tape, would I still be placed with these limitations? I'm assuming as much, since the files that are being synthesized into a full backup to tape are being read from a dedupe volume. I ran a few tests with synthetic full from a dedupe volume, while having "Transform previous backup chains into rollbacks" selected, and the performance was terrible. I'm guessing the performance will not improve that much without transforming the previous backup chain?

What is the best practice with Server 2012 dedupe and Veeam? I'd really like to use synthetic fulls in some capacity with Windows dedupe, whether it be reverse incremental or periodic synthetic fulls with forward incremental.

Thanks :)
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby foggy » Mon Jun 22, 2015 4:44 pm

Hello, I've merged your post into existing discussion with some hints/recommendation on using Windows deduplication on the backup repository. However, you definitely have to expect performance degradation during synthetic activity (think random I/O) on any deduplicating storage.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby conradblack » Mon Jun 22, 2015 4:48 pm

foggy wrote:Hello, I've merged your post into existing discussion with some hints/recommendation on using Windows deduplication on the backup repository. However, you definitely have to expect performance degradation during synthetic activity (think random I/O) on any deduplicating storage.


Thanks.

Does this apply as well to forever forward incremental when the oldest increment is merged into the full backup file?
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby foggy » Mon Jun 22, 2015 4:55 pm 1 person likes this post

Yes, though forever forward is less I/O intensive than reverse incremental, it still does synthetic activity during the merge phase.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby conradblack » Mon Jun 22, 2015 6:06 pm

foggy wrote:Yes, though forever forward is less I/O intensive than reverse incremental, it still does synthetic activity during the merge phase.


Thanks, that clears things up.

I should have asked last post, but would virtual full synthetic to tape be similar in I/O performance to regular synthetic fulls?
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby v.Eremin » Tue Jun 23, 2015 10:18 am

It should be similar in terms of I/O. Though, I don't really think you have to worry about that, because vsb is just a tiny file consisting of pointers.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby namiko78 » Mon Dec 07, 2015 1:06 pm

Should i create my RAID with 64k block sizes as well, same as the file system? (default is 256k)
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby foggy » Mon Dec 07, 2015 4:13 pm

Steven, please review this discussion, should help.
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Re: Best Practice for MS Server 2012 DeDup Repo

Veeam Logoby bjdboyer » Wed Jan 20, 2016 8:12 pm

Any updates on "lightsout" procedure with V9? Can you still use windows dedup with scale-out repositories?

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