Allison wrote:
One last item The RD53 and RD54 drives run hot (around
35W) and lots of
cooling was one way to insure they lasted longer. Heat is the enemy
of those older drives and it is not unusual to find a system there the
fans were dead or clogged and the drives failed..
Jerome Fine replies:
Heat is the enemy of every drive, some more than others.
Most current 3.5" multi-GB drives generate so little
internal heat that it is not a problem.
Whereas, with any of my 5 1/4" ESDI drives, and ESPECIALLY
my Hitachi 600 MB FULL HEIGHT drives, I used to stack them
3 high (with a DC600A tape plastic case in-between to prevent
contact - just seemed to be best and I had a lot of spare
tapes) with a fan just an inch away used to cool them. In
addition, I used a PC power supply for all of the hard drives
and the fan rather than using the power supply from the BA123
box. This seems to provide a longer life for the BA123.
However, by trial and error (well mostly error), I found that
the TK50 and the TK70 tape drives MUST be powered directly
from the BA123.
Sincerely yours,
Jerome Fine
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