Block-level LUN replication options for Windows [closed]
Solution 1:
Replication via the storage platform is pretty much always going to be the best bet. Granted the desire to move from one platform to another makes it a lot harder to do as most of the time you can only replicate from one array to another. Now if you are sticking with HP arrays they should be able to replicate between each other so the replication software cost wouldn't be a waste.
Check with your sales person, maybe they can get you a good deal on the replication software if you are in the process of replacing your arrays.
Use your VAR as a resource, that's what they are there for.
Solution 2:
Take a look at products supporting Open System SnapVault.
Tom
Solution 3:
SteelEye DataKeeper does block level replication of volumes and has work very well for us in similar circumstances.