cloud-geek

Any service that reuses the same physical drive space should be vulnerable unless they either store encrypted or do secure deletion. Having used secure deletion before on dedicated hardware it is really hitting the drive performance. That is why I am guessing vendors don't use secure deletion. Using encryption overall looks more efficient overall.

Agreed. I think the post misses out the new file systems supporting the new Linux roll-out. I believe ButterFS is extremely interesting with regards to distributed block storage for example.

Projects like Sheepdog should definitely kill off SANs and RAID. It can't come soon enough, as the post says, current performance in the cloud for storage is so variable. I moved away from EC2 for exactly this reason.