ISCSI SAN differencing volume replication (using two DEL MD3000i )
Posted on 2009-07-14
We have two MD3000i arrays with the snapshot premium feature enabled. We are using hyper-v to host 6 windows servers on 2 physical servers. One server and array will reside at a nearby site that has a 18 Mb radio link.
MX2 - 100Gb exchange
SQL2 - 40GB mssql
FS1 - 1.5Tb file server
TS2 - 30 G Terminal server
AP1 - 1GB ingres database
We would like to be able to replicate all data between the two arrays once a day as a backup solution. (after an initial replication over a local gigabit network). I expect the total daily differences to be about 1 GB.
I was going to create a local snapshots of each volume using a script on the host machine however we would need some software that does a differencing copy (only changes since the previous snapshot) and apply them to the other array.
We have acronis server but I think it will only create backup to acronis (tib) files (not direct to another volume) and so it would require an intermediate store of backup files which would then need to be restored or converted to vhd in a recovery situation.
Can I have any sugestions as to some software that will do the difference replication for us.