I was talking to our engineering team a couple of weeks ago with regards to our upcoming beta. During a demo I noticed that in our UI it said “Space Efficiency” instead of deduplication. After some discussions it became clear to me why that is… It isn’t “just” deduplication which will be in the upcoming beta for Virtual SAN, but the engineering team managed to also get compression in there. Huge accomplishment if you ask me and I hope this will make the official next release.
So where does compression fit? Compression happens after deduplication and we expect to store 2KB for every unique 4KB block. Combine this with “RAID5/6” over the network, aka “erasure coding” and with deduplication and thin provisioning and I bet you will see significant space savings! Great new functionality (if and when released), which will especially make the all-flash configuration a no-brainer if you ask me. Especially with flash prices still dropping and the price being almost on the same level as SAS drives these days it will make this a very compelling solution.