Guten Tag Alexey Kovyazin,

nice Questionaire , i would suggest to add 1 more point
if it has a Raid then the size of the Stripe Set

The Stripe Set ist the amount of data a raid moves to / from the diskarray for every read/write.

Example:
a Raid 5 with 3 Disks and a Stripset of 128 KB means that each Read / Write will move 192 KB
now add a Database Page Size of 4 KB (Worst Case)
then every database page read or written will instead move 192 Kb or a 48 fold overhead