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robby.vecchi
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Advice for replica on NAS

Post by robby.vecchi » Mar 12, 2013 11:27 am

I have two Hosts running vsphere 5.1 and VEAAM B&R 6.5 as Backup & recovery solution.

I do regular backups on QNAP NAS and i replicate VM'S between hosts local storage.
So basically i replicate host A VM's on Host B local storage and vice versa.

All VM's are thick provisioned, same are replicated VM's.

The problem comes in if i eventually try to turn on replicated VM's on the "surviving" host, due to
local storage space. I mean, i can quiet easily run out of local space.

I thougt an idea could be to replicate only critical VM's (ex DC's) between hosts, and create a replication
job that replicates other VM'S on NAS.

Could this be a good solution? Do you have any advice or working implementation on this matter?

Thanks a lot for your seggestions ad attention.

Roberto
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foggy
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Re: Advice for replica on NAS

Post by foggy » Mar 12, 2013 12:31 pm

Roberto, have you considered the ability to set the target disk type as thin in replication job properties? Could save you some space.

Vitaliy S.
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Re: Advice for replica on NAS

Post by Vitaliy S. » Mar 12, 2013 12:45 pm 1 person likes this post

robby.vecchi wrote:I thougt an idea could be to replicate only critical VM's (ex DC's) between hosts, and create a replication
job that replicates other VM'S on NAS.
To be able to replicate to a NAS device, you should connect it to one of your production hosts. If I were you I would just continue running backup jobs for all VMs and use replication jobs to replicate only mission critical VMs, pretty standard approach among our existing customers.

robby.vecchi
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Advice for replica on NAS

Post by robby.vecchi » Mar 12, 2013 12:53 pm

Thanky you foggy for your prompt reply and suggestion.

Yes, i did consider it...but when the amount of data will be >= than the amount of local storage available?

I'm worried about a situation where i could easily fill up the disk space.

So NAS Replica is an unpracticable solution?

Thanx again.

Roberto

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Re: Advice for replica on NAS

Post by dellock6 » Mar 12, 2013 12:54 pm

Also, DC are probably the worst example of VM that can be protected with replication, it's way easier to create two separated DCs, one per host, and replicate their data thanks to AD replica. In this way you get business continuity rather than disaster recovery.

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Vitaliy S.
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Re: Advice for replica on NAS

Post by Vitaliy S. » Mar 12, 2013 1:36 pm

robby.vecchi wrote:So NAS Replica is an unpracticable solution?
If your NAS device can support production workload (IOPs), then it is also fine to use it as replication target.

Jonathan
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Re: Advice for replica on NAS

Post by Jonathan » Mar 13, 2013 12:28 pm

Vitaliy S. wrote:If your NAS device can support production workload (IOPs)
Which is not very likely, unless it's a rather beefy appliance with 10Gbit ethernet. Chances are, building your own x86 server with local storage and using a free copy of ESXi is not only cheaper, but also more tailored to your specific needs, more flexible and it gives you better performance.

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