Quote: Originally Posted by Ztruker
On Windows 8, Defrag of a SSD optimizes the drive. Attachment 277530
I thought Windows 7 did this as well. Can't check as I don't have Windows 7 on a SSD now.
I thought it was common knowledge by now that you should never defrag a SSD, it matters not what OS it is.
I am not the best at explaining things so below is a copy and paste to give a better idea of why it is not needed to defrag a SSD and also that it can actually do more harm than good.
"You should never defrag an SSD. Don't even think about it. The reason is that physical data placement on an SSD is handled solely by the SSD's firmware, and what it reports to Windows is NOT how the data is actually stored on the SSD.
This means that the physical data placement a defragger shows in it's fancy sector chart has nothing to do with reality. The data is NOT where Windows thinks it is, and Windows has no control over where the data is actually placed.
To even out usage on its internal memory chips SSD firmware intentionally splits data up across all of the SSD's memory chips, and it also moves data around on these chips when it isn't busy reading or writing (in an attempt to even out chip usage.)
Windows never sees any of this, so if you do a defrag Windows will simply cause a whole bunch of needless I/O to the SSD and this will do nothing except decrease the useful life of the SSD."