6 Feb
2009
6 Feb
'09
6:20 a.m.
On Friday 06 February 2009, Christian Corti wrote:
Considering that they're RA81s, their HDA is likely to be in a condition
where they're more useful as scrap (or spare parts for other drives)
than as an actual RA81. :( At least RA82s in my experience haven't had
the same problems that RA81s had.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
On Thu, 5 Feb 2009, Dennis Boone wrote:
I'm sure that De's specs were for a 120V circuit. With a 200-240V
circuit, the draw should be about half. Also, an RL02 and TU56 draw
next to no power; i'd be surprised if both of them together draw much
more than 1 amp while running, off of ~240V power.
Also, I've always wondered if at "16 amp" circuit in Europe isn't really
the same as a "20 amp" circuit in the US; here you're supposed to not
load a circuit to more than 80% of the rating for a continuous load,
which works out to 16 amps for a US 20 amp circuit. Is there anyone
here with electrician-type experience outside of North America that can
give me an answer to that? Are you allowed to run a "16 amp" circuit
with 16 amps of continuous load? (Not surprising though I guess, at
least one electrician at work here insists that you are allowed to draw
100% of the fuse/breaker rating continuously, though I've looked it up
and it's definitely not allowed by code.)
IIRC, an RA81 disk has an inrush spec of 80 amps
for a time period
measured in seconds.
I'm using an RA80 together with an RL02 and a TU56 on a 16 amp
(standard) circuit breaker with C characteristics. Ok, so you
don't want one of those anyway. :)
We've been offered two SA481, i.e. two racks containing four RA81
each. I don't know if they are still available (we had to pass
because we haven't the space for them), but anyone interested could
pick them up for free.