WHS, as you know I have mixed drive types... Of course DisableDeleteNotify is off, but that is not the case for the hard drives (you have to run the command as Administrator to get the info btw). Strangely enough, this link, http://blogs.msdn.com/b/e7/arc.....s-and.aspx seems to state some mechanical drives would not have it on either?
Will disk defragmentation be disabled by default on SSDs?
Yes. The automatic scheduling of defragmentation will exclude partitions on devices that declare themselves as SSDs. Additionally, if the system disk has random read performance characteristics above the threshold of 8 MB/sec, then it too will be excluded. The threshold was determined by internal analysis.
The random read threshold test was added to the final product to address the fact that few SSDs on the market today properly identify themselves as SSDs. 8 MB/sec is a relatively conservative rate. While none of our tested HDDs could approach 8 MB/sec, all of our tested SSDs exceeded that threshold. SSD performance ranged between 11 MB/sec and 130 MB/sec. Of the 182 HDDs tested, only 6 configurations managed to exceed 2 MB/sec on our random read test. The other 176 ranged between 0.8 MB/sec and 1.6 MB/sec.
Actually looking at the scheduled tasks in my case show only the C: drive is not automated for Defrag. Other drives are.
EDIT, found this --> http://itcookbook.net/blog/win.....-hard-find