Quote Originally Posted by johnw View Post
I think 100% incompressible is the best choice, at least for a first test. That way anyone who wants to try to repeat your measurement can do so.
I think 100% is the best test for NAND durability (and parity scheme, I suppose). But if you're entering a SF into the test, one of its big features that sets it apart is the compression and negating it doesn't represent what the SF can do (for most usage models).

I'd like to see both tested, of course, but the Call for MOAR in testing is always there

Quote Originally Posted by johnw View Post
That complicates things needlessly. Just how compressible is a "realistic load"? And how much does the Sandforce actually compress when given typical data? (not very much, I think). Better to stick with incompressible data so that the test is repeatable and we know how much is actually written to the flash.
Take what you have on a drive, copy it to another, compress the files with the 2nd lowest level of RAR compression (lowest being 0 compression, just making a single file out of many), observe compressibility