Q.)  A partner student is inquiring if there is any information available which provides more information on the duty cycle/limits for MDL SAS drives?

A.)  The documents, which URL addresses are provided below, provide some more information about the differences in drive types. Hope this helps.

http://h20195.www2.hp.com/v2/GetPDF.aspx/4AA1-9012ENW.pdf

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01071496/c01071496.pdf