Disk in-Depth

I started an article on Disk performance and characteristics for the PFE Performance Wiki a while back.  I had actually forgotten about it (those who know me know my memory is Swiss Cheese sometimes).  Anyway, here is a link to the article:

https://social.technet.microsoft.com/wiki/contents/articles/disk-in-depth-pfe-performance-guide.aspx

If you are a disk expert, feel free to critique and/or update

Cheers,

jeff