Quote Originally Posted by johnw View Post
When I read the Mushkin blurb about "unthrottled IOPS", my first interpretation was that they meant that the IOPS (i.e., 4KB high QD performance) is not throttled. I doubt they mean that they have disabled the lifetime throttle for write speed.
It seems that the SF2xxx drives have more options in how you can throttle performance. Muskin have confirmed the following to a query I made:

"DuraClass management functionality is still active. “Unthrottled” in this context refers to write IOPS bursting up to 90,000+ but being governed down to 20,000 after a few seconds which is typical behavior with standard firmware with SF-2281. The firmware we have on the Chronos and Chronos Deluxe drives will not have that governor activated."

If they switch it off altogether I might get one.