Guest VM Windows 2012 Storage Spaces Support?

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Re: Backup of Storage Spaces drive shows no warning

Veeam Logoby Gostev » Thu Nov 12, 2015 12:30 pm 1 person likes this post

Please note that Microsoft does not support Storage Spaces within a VM (so consequently, we do not provide Storage Spaces support in FLR).

Quote from Microsoft FAQ for Storage Spaces:
What types of drives can I use with Storage Spaces?
You can use commodity drives attached via Serial-Attached SCSI (SAS), Serial ATA (SATA), or USB. Storage layers that abstract the physical disks are not compatible with Storage Spaces. This includes VHDs and pass-through disks in a virtual machine, and storage subsystems that layer a RAID implementation on top of the physical disks. iSCSI and Fibre Channel controllers are not supported by Storage Spaces.

Thanks!
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby ncolt » Fri Nov 13, 2015 1:11 pm

Thanks for the heads up on Storage Spaces not being supported within a VM. We are going to split the drives up into smaller chunks.
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Delo123 » Thu Nov 19, 2015 12:24 pm

Just create a dynamic disk instead of a storage pool in your vm's. we have been using These for years without issues upto 8TB
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Delo123 » Mon Nov 23, 2015 3:38 pm

Try to get rid of storage spaces and recreate the data with dynamic disks as Long as you can! Expending your 50TB Volume will be a Major issue, much easier with dynamic disks....
Also dynamic disks is supported in a file restore request etc... (also storage spaces is not supported in a vm by Microsoft)
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Andreas Neufert » Wed Jun 29, 2016 7:51 pm

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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby mkretzer » Thu Jun 30, 2016 6:56 am

Thanks for the heads-up we are using storage spaces for our Veeam repository to bind together multiple FIBRE CHANNEL (nor supported) RAID 6 (not supported) volumes....

What i cannot understand: Windows sees that the volumes are Fibre Channel - why not warn the customer?
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Andreas Neufert » Thu Jun 30, 2016 7:22 am

Don´t know why Microsoft did this. Maybe they will change this with Win2016 release.

For your way of using Storage Spaces, we introduced Scale out Backup Repositories.
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby mkretzer » Thu Jun 30, 2016 9:52 am

@Andreas Neufert
And we would be very happy to use this but we need per-VM backup chains for that which we cannot use because of the terrible DB deadlock issues which will be fixed in U2 hopefully... I hope this comes soon...
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Delo123 » Mon Jul 04, 2016 10:45 am

mkretzer wrote:Thanks for the heads-up we are using storage spaces for our Veeam repository to bind together multiple FIBRE CHANNEL (nor supported) RAID 6 (not supported) volumes....

What i cannot understand: Windows sees that the volumes are Fibre Channel - why not warn the customer?

You could put something like Starwind in between maybe?

mkretzer wrote:@Andreas Neufert
And we would be very happy to use this but we need per-VM backup chains for that which we cannot use because of the terrible DB deadlock issues which will be fixed in U2 hopefully... I hope this comes soon...

Which Deadlock issues? Anything to worry about? We use scale out repositories a lot with enabled windows dedupe without issues until now...
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby mkretzer » Mon Jul 04, 2016 6:25 pm

Delo123 wrote:You could put something like Starwind in between maybe?


I am not really sure this would be supported. Only the "real deal" if i understand correctly, so direct access to the disks.
Right now we have no issues whatsoever and we will change the config with the next backend storage change.

Delo123 wrote:Which Deadlock issues? Anything to worry about? We use scale out repositories a lot with enabled windows dedupe without issues until now...


In our backup copy jobs we copy about 800 VMs in cabout 8 jobs. When they run in parallel we get DB deadlocks which one time corrupted the backup chain so bad that even Veeam support could not fix it. The problem is that the information which backup file is current does not get written to the DB correctly because at the time of the write a deadlock might happen. A hotfix could not be created because the change would be to big.

For us that was a total no-go and we canceled the switch to single vm backup files...
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Andreas Neufert » Mon Jul 04, 2016 6:55 pm

Dynamic Disc Extends are the only from Microsoft and Veeam supported replacement.

Can you please post the support case number here so that the Veeam people can look at it and post an update regarding the deadlocks. Thanks in advance.
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby mkretzer » Mon Jul 04, 2016 8:10 pm

Case 01752760
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Delo123 » Tue Jul 05, 2016 7:09 am

Ok, never heard of that, thanks for informing!
We "only" backup around 300 vm's but luckily haven't experienced this...Total Backup Size is around 60TB.
But if I read your post correctly you are using vm's for your backup repository? Why not switch to a physical machine / proxy so you can use much more resources and become independent from your production environment? (Just interested :))
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby Andreas Neufert » Tue Jul 05, 2016 8:58 am

@mkretzer
Thanks for the case.
When "File does not exist" happens at a Backup Copy Jobs with per VM chain, our support can fix the chain.
Workaround to avoid this completely is to disable per VM chain till Update 2 arrives.

I work with a lot of bigger customers but never ran into this. Sorry to hear that this hitted you.

Can you please send me answers to the following:
What Backup Target Storage do you use (including protocoll)?
Did you added the same path in 2 different Repository or Extends? This is not supported and can lead into blocked backup files when a repository scan and another job try to read/write data.
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Re: Guest VM Windows 2012 Storage Spaces Support?

Veeam Logoby mkretzer » Tue Jul 05, 2016 9:12 am

In one case metadata corruption seems to have happened. We removed the backup completely and re-scanned, still the backups did no longer work.

Storage target is a Fujitsu DX60 FC Block SAN, two spanned volumes no StorageSpaces is involved :-). No other application is using this device.

On this volume there is only one extend and the SOR has only one extend in general right now. So that cannot be the reason for the issues.
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