"Nearline" refers to the lower rotational speed hard disk which is usually refer to the high-capacity SATA hdd. On the other hands, "SAS is a enterprise-class drive which supposedly has a more robust mechanical specification and a
controller/firmware optimized for high-volume I/O, manageability, and
better error detection and correction".
So inline SAS really means standard consumer-class SATA drives wtih SAS interface.
Large capacity with enterprise interface.....Not too bad.
For more inforamtion on Nearline, see http://en.wikipedia.org/wiki/Nearline_storage
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