Backup over WAN. Proxy vs Repository?

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Backup over WAN. Proxy vs Repository?

Veeam Logoby andreas » Wed Oct 03, 2012 8:40 am

Hi,

I have a thought regarding offsite backup over the WAN. Our local backups, I have a good handle on, but we now want to add offsite backup over the WAN.
On our offsite location, there is a ReadyNAS where I want to store my backups. The question now is how to best arrange this?

1. Share the storage on the NAS using CIFS and then add a repositorie on our local Veeam server and then duplicate all backup jobs to this repositorie? (Proxy?)

2. Setup a Windows server and connect to the NAS via iSCSI and use this server as the target? (Proxy or Repositorie?)

3. Is there a better way of doing this?

Thanks in advance,

Best Regards,
Andreas
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby foggy » Wed Oct 03, 2012 8:53 am

Andreas, the best way is to set up a Windows server in the remote site, add it as a repository to Veeam B&R, and present the NAS via iSCSI to it. In this case the target-side agent will run on this "proxying" server and only compressed data will be transferred over WAN. Thanks!
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby andreas » Wed Oct 03, 2012 9:30 am

foggy wrote:Andreas, the best way is to set up a Windows server in the remote site, add it as a repository to Veeam B&R, and present the NAS via iSCSI to it. In this case the target-side agent will run on this "proxying" server and only compressed data will be transferred over WAN. Thanks!


Ok, thanks! Do i need to install any Veeam component on my remote Windows server that is to be used as the "proxying" machine or is this configured automaticly when i add this as a repository?

/Andreas
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby foggy » Wed Oct 03, 2012 9:32 am 1 person likes this post

It is configured automatically.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby jpeake » Wed Oct 03, 2012 1:05 pm

Is there an advantage to using a Windows server at the remote site vs. a Linux server?
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby Gostev » Wed Oct 03, 2012 1:58 pm

No advantages or disadvantages. Same code, just compiled for a different platform.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby jpeake » Wed Oct 03, 2012 3:05 pm

I think I saw in another post somewhere that by adding the server agent at a remote site, vs mapping to remote storage directly via CIFS saves about 3X traffic over the WAN. Is that accurate?
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby Gostev » Wed Oct 03, 2012 3:25 pm

Yes, this is so for reversed incremental backup mode.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby andreas » Thu Oct 04, 2012 9:05 am

Gostev wrote:Yes, this is so for reversed incremental backup mode.


Very interesting. Can you generally say that reversed incremental is the preffered way to go when you want to run your backup jobs to a offsite repository over the WAN?

/Andreas
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby foggy » Thu Oct 04, 2012 10:12 am 1 person likes this post

No. This is not like "traffic usage for reversed incremental is 3x less than for forward incremental" but "traffic usage for reversed incremental in case of agent-enabled target storage is 3x less than for reversed incremental backup directly to CIFS share". In the case where our agent is installed on the target storage (or the proxying server on the target side), VBK update and transformation processes are performed locally on target storage instead of sending corresponding data over WAN.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby andreas » Thu Oct 04, 2012 1:25 pm

Sorry for spamming this thread but exactly how much gain is there in using a agent-enabled target vs lets say just a regular filcopy with rsync or something like that. The backupfiles are already deduplicated and compressed at the main site and are just to be copied over the WAN link to an offsite location?

/Andreas
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby dellock6 » Thu Oct 04, 2012 3:04 pm

Uhm, wait, you already have local backups at your primary site, right? And you want to replicate those backup files in the remote readynas?

In this case, since Veeam can only save data in one repository per job, is to go on saving backups locally, and then replicate backup files to the remote storage via replication software like rsync. Search in these forums, there are many examples about how to use rsync.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby jpeake » Thu Oct 04, 2012 4:14 pm

Which way is "better"? I am a new Veeam'er, still in the trial period. Looking at Veeam Enterprise to replace BackUp Exec.

I am backing up 30 or so VM's locally to a SAN volume. So far so good. I want offsite also (but not the full blown Veeam replication route). I have setup secondary jobs that point at an agent based NAS in a remote office. When the primary jobs finish, it fires the offsite job using post-job command line.

Is that the preferred way of doing this, versus just setting up something like rsync and pushing the files as a process external to Veeam?
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby dellock6 » Thu Oct 04, 2012 4:18 pm

The SAN volume is the same holding production VMs? This is not a good practice, you loose the san you also loose the backups. Better have two nas, one local to save backups, and another remote to ship there the copies of the backup files.
In your design, you hit the production storage twice: it's not a bad thing per se, but you can reduce your backup window and the load on the storage by running only the local job, and then use rsync to copy the backup files remotely.

Luca.
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Re: Backup over WAN. Proxy vs Repositorie?

Veeam Logoby jpeake » Thu Oct 04, 2012 4:47 pm

The production SAN is holding both VM's and backup volume. This is temporary, just during my testing as I evaluate permanent solutions. We still use Backup Exec to tape. Looking at either a Drobo (800i or 1200i) or Dell DR4000 in main site. And am using a couple of low end QNAP NAS boxes in the remote office (QNAP 419PII).

I will try rsync.
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