[Pc_Support] Be wary on the Hitachi DeskStar 7K500 (500GB) drives = 5 platters!

[Bryan J. Smith]

They use 100GB platters so they have 5 platters!  Most drives today are
only 1-3 sometimes 4 platters, largely for reliability in a commodity
disk drive capacity.

The last time a company put 5 platters in a capacity disk drive capacity
was IBM's DeskStar 75GXP (15GB/platter).  Most people with the 30-45GB
platters had few failure rates, but those with the 60-75GB, especially
75GB, had high failure rates.

Now HD cooling was little exposed back then because 7200rpm wasn't
commonplace.  And the new materials and fabrication processes in use by
Hitachi and Seagate are now rated for 60 degrees C operation instead of
the former 40 degrees C.

But the vibration and other operational tolerances are still limited, so
be wary of how you deploy these drives.


-- 
Bryan J. Smith     b.j.smith at ieee.org     http://thebs413.blogspot.com
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