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Unison
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Re: Backup over WAN. Proxy vs Repository?

Post by Unison » Oct 07, 2012 11:29 pm

Hi andreas,
I think the trick might be to not try and get veeam to do everything on its own or at once. I think what your wanting to do is similar to what we have put in place here.
Each time you give veeam something to do with your servers - i.e. back them up locally, back them up over the WAN, replicate them over the wan - it will shorten your available backup window times, meaning you get fewer backups through the day.
Originally i was going to get Veeam to do our local backups, then WAN backups and then replication of our VMs.....but i realised that getting veeam to do the WAN backups is a bit of a waste of the backup system and veeam resources. Thats when i made the decision to get something else involved in the backup process (not that i dont think veeam couldn't do it but it is unnecessary to 'hold up' veeam by giving it this unnecessary role) - but because something else can do that 'work' - why make veeam do another backup when it has just done the backups? I use a product called Allway Sync to 'copy' the backups that veeam stores locally to our other geographically separated office over our 40MB WAN connection.
This way, veeam can do more backups more often and it can do our replication - another product handles the copying of files to our other WAN separated site.

So our process is like this...

- Veeam takes backups of all servers many times a day and stores backups locally (backups only run on even hours)
- Veeam does replication of all our servers many times a day to a spare ESXi host and totally separate storage from production (replication only runs on odd hours)
- Allway Sync copies/synchronises the veeam local store backups with a windows box in the remote site several times a day - at times that minimises impact to users
- I then use VB scripts to move files around the local stores in both sites so i can retain images for long periods

You might not want to do replication, but use veeam to do your backups locally as many times a day as you can.....then use something else to do the moving/copying of those backup files that veeam has just made. Veeams file copy module is very basic (hopefully they will develop this area of veeam in future - it hasnt had much attention :)) so just use something else for that part of your backup system.

JoshRountree
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Re: Backup over WAN. Proxy vs Repository?

Post by JoshRountree » Oct 09, 2012 1:54 pm

What about setting up a Windows Box in the remote location and install another Veeam server there and let it handle replication. Is that possible, or does it need to be handled by a Veeam server local to the storage?

foggy
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Re: Backup over WAN. Proxy vs Repository?

Post by foggy » Oct 09, 2012 2:40 pm

Josh, this is possible and many of our customers do pull replication, which provides them for faster failover using Veeam B&R in case of disaster. Just remember that you still need the proxy server in the source location for fast data retrieval.

JoshRountree
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Re: Backup over WAN. Proxy vs Repository?

Post by JoshRountree » Oct 09, 2012 3:19 pm

foggy wrote:Josh, this is possible and many of our customers do pull replication, which provides them for faster failover using Veeam B&R in case of disaster. Just remember that you still need the proxy server in the source location for fast data retrieval.
Can I use my local Veeam B&R server as the local proxy server? It does my local backups, but as long as it's not doing a backup, I would think it would be okay resource wise? Or, can I backup with the local Veeam B&R server and use it as a proxy for pull replication at the same time? I would think it would be slow.

foggy
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Re: Backup over WAN. Proxy vs Repository?

Post by foggy » Oct 09, 2012 3:28 pm

Depending on you backup/replication load. Note that if backup proxy server is shared between different Veeam backup servers, the number of concurrent tasks for it is counted within each backup server independently.

JoshRountree
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Re: Backup over WAN. Proxy vs Repository?

Post by JoshRountree » Oct 15, 2012 5:15 pm

If I have a Veeam B&R server in a remote location and use it to "pull" backups with a proxy at the location where the datastore is, will I get WAN dedupe and compression, or do I have to use a "push" backup to get that?

tsightler
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Re: Backup over WAN. Proxy vs Repository?

Post by tsightler » Oct 15, 2012 5:33 pm

V6 and above have no concept of "push" or "pull", those concepts are largely a legacy of V5 and earlier versions, when the Veeam server itself did all of the data movement so it's position mattered. With V6 and newer and the distributed architecture, all communications are proxy->repository (for backup to Windows drives or Linux mounts) or proxy->proxy (for backup to SMB/CIFS over WAN, or for VM replication). As long as you have a proxy near the datastore side, and a repository or proxy on the target side, you will get compression/dedupe.

JoshRountree
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Re: Backup over WAN. Proxy vs Repository?

Post by JoshRountree » Oct 15, 2012 5:40 pm

That's what I thought, I think I was reading a lot of v5 posts and got confused.

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