btomkins
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ISCSI SAN differencing volume replication (using two DEL MD3000i )
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.
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.
tpartners
If you are looking to replicate only snapshot files... Have you looked at rsync? It's open source.
ASKER
I think rsync runs at the file level which would copy the entire exchange db not just the differences.
As there are large database files the software would need to be volume savvy.
As there are large database files the software would need to be volume savvy.
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ASKER
Thanks tpartners.
The datadomain stuff looks to do a whole lot more than Im after.
I have sent an enquiry off to Asigra. Its quite a big offering. what minimum components would I need to get my replication working?
I think the host is probably the best place to do the replication as you only need to install it on 2 machines and they are the only ones with direct access to the SAN. I want to make whole copies of the VM volumes anyway.
The datadomain stuff looks to do a whole lot more than Im after.
I have sent an enquiry off to Asigra. Its quite a big offering. what minimum components would I need to get my replication working?
I think the host is probably the best place to do the replication as you only need to install it on 2 machines and they are the only ones with direct access to the SAN. I want to make whole copies of the VM volumes anyway.
ASKER
I have ended up using acronis to backup make incrementals to a cheap nas and then sync them to the DR site. Its a bit slow and inefficient but works.