So if Mac osx automatically defrags then wouldn't a drive like this be useless? S

[waloshin]

Seagate Momentous XT Hybrid Drive.

From Anandtech's review they state, " The data in the NAND remains persistent across power cycles, however not formats or defrags. You still have to defragment the drive, but doing so resets the drive's learning back to zero. Defragmenting less often is the only real solution.?

 

[chrono1081]

Its not that MacOS automatically defrags, its that the file system doesn't require defragging.

 

[blueroom]

That Momentus XT drive will chew through your batteries if used in a MacBook.

 

[Winter Charm]

That Momentus XT drive will chew through your batteries if used in a MacBook.

Really? Uh oh... I was seriously considering it, but I need battery life above all else

 

[NT1440]

Its not that MacOS automatically defrags, its that the file system doesn't require defragging.

http://support.apple.com/kb/HT1375?viewlocale=en_US

It does something similar, but on its own.

 

[Steve Ballmer]

Its not that MacOS automatically defrags, its that the file system doesn't require defragging.

That's not really true. The file system can and will get fragmented, but only once you start to reach 90-100% disk capacity. But to say that you "never" need to defrag is not accurate.