[staofbur]

Thanks have passed your details on to our expert in this space.

For the public record this was mainly down to the problem of client reliability and migrating data live when there are 8,000 people hammering it with reads and writes. We went for a read/write through system and background synchronisation. The latter we had real reliability problems with and the upload performance wasn't great.

Also ROI didn't stack up in the end versus our SAN so we canned it.

[ranman]

Ok, if you guys pursue something like this again definitely check out something like storage gateway. It can help reduce the load in a live migration scenario like this.