Veeam replication + slow wanlink .. How to optimize?

[gollem]

The setup on both sides:

IBM v7000 FC SAN with 22*600GB 15k SAS disks + 2x 300gb SSD drives. 2x FC switches, 5x IBM x3650 M3 hosts with 144GB ram each, vmware 5.1

We are testing with replication between both sites:

I'm trying to replication our fileserver over to the other location, Our fileserver is 750GB+ in size

OS: W2k8 R2
Currently partitioned in (3 seperate vmware disks:
C: 40GB (OS)
E: 750 GB (data)
X: 30GB (SWAP+Indexing+Volume Shadow)

All swap data is going to X
Also indexing data is on that drive
and volume shadow copying for the E drive is stored on the X drive

A typical daily backup: X is excluded from the backup selection, still C: is 2~3GB in size, E is about 10GB in size each day. (dedupe rate is about 2x, so 20gb of data is actually changing according to veeam)

As our wan link is only 2/2mbits i can only backup 10gbyte/night (from 6 pm to 6am: 12 hours.... 2mbits/second * 60 seconds * 60 minutes * 12 hours = 86400 mbits/night /8 =10800 mbytes/night /1024 = 10,54 gbytes/night

So my backup window is to short.

Given the fact that upgrading the WAN is out of the question, are there more things to do to reduce the transfer?

[Gostev]

Are you already using "WAN" storage optimization setting in Veeam?
Have you considered purchasing a WAN accelerator?

[gollem]

Hi Gostev,

Yes I've set the optimized for WAN traffic setting in the replication setup.

On both sides we have a riverbed which is our WAN accelerator.

[gollem]

Another question: How big are your c-drives in veeam?

page file on a different drive, indexing on a different drive, no shadow copies on C.

is about 2gb daily while nothing is changing on those servers

[dellock6]

Is C: drive so important? I mean, if E: disk is the most critical element, try to run a job replicating only it and see how it takes. You can eventually replicate other disks during the weekend, if you can use part of the day on sunday maybe.

Luca.

[chrisdearden]

what compressino settings are you using ? you might want to attempt the "extreme" setting if you have CPu for it.

Can you also attempt replication after shadow copies have been disabled ? I've seen local shadow copies cause bit level changes for the source volumes , meaning you get more changed blocks to replicate.

[Gostev]

the "extreme" setting if you have CPu for it.

Since he is replicating over a very slow link, any CPU at all will be able to handle Extreme compression (given the data stream speed).

[karlochacon]

I am having similar issues and after reading this I found I was using LAN Target and since my link is slow and as pointed here slow links vCPUs won't be much afected I am setting extreme compression then

thanks guys