IOmeter testing

[Anvil]

Ao1

The example would and will take place using Windows XP and other old OSes.
Vista, W7, OSX are all natively designed for 4KB alignment, XP was not.

To make a long story short, iometer is by default aligned at 512B when what we really want is 4KB alignment.
4KB aligned would have been a better title for the charts but I'm thinking of 512B as not being aligned

A few links of interest that explains it well are
Anand on WDs Adcanced Format transition
Anands State of the Union article was the first to address this in a test

edit:
Although the X25 is designed for 4KB pages like all current SSDs, Intel optimized for 512B as well so for the Intels it doesn't make that much of a difference.
Other SSDs like the C300 is not optimized for 512B at all which is clearly seen in the State of the Union article at Anandtech.