Quote Originally Posted by Vapor View Post
Was going to do a multi-TiB test, but found it easy enough to stop/start the Anvil app and refresh SMART manually every ~.67GB (2 seconds) when I expected it to turn over. First differential was 63.3GiB, second was 63.2GiB, third and fourth were 63.4GiB per 64GB jump.
So that is a total of A = 271.9788 GB written by Anvil's app in four trials, in which (I think you mean) the SMART attribute increased by 256.

271.9788 / 256 = 1.0624172

(1024/1000)^1 = 1.024000
(1024/1000)^2 = 1.048576
(1024/1000)^3 = 1.073742
(1024/1000)^4 = 1.099512

So the units of the SMART attribute are hard to explain. They are closest to GiB, but still about 1% off from GiB.

I guess there is a bug in either the Sandforce firmware or Anvil's app.