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Old 01-16-2008, 04:08 PM
james
 
Posts: n/a
Default Re: 6 bay scsi enclosure. overheating?

DoN. Nichols wrote:
<snip>
> Does the fan work? (Can you feel air being blown out the back
> when you turn it on?)


yes. both are pushing quite a bit of air

> Is the box clogged with housedust? Ours tend to accumulate cat
> hair and dust with a few years of continuous operation.


it's sitting in an open back "cubby hole" in my desk about 3 feet off
the ground so there wasn't much dust at all when i opened it up a couple
of days ago, but i blew it out anyway. i actually ended up leaving the
side pannel part way open and putting a fan in front. it works for
about 30 minutes this way and when it starts it's "cycle" it goes about
2 minutes before crapping out again.
cheesy top view ascii art follows:

____
/| |
/ | | <--drives
----

/-----\
\-----/ <--fan

> There are some software packages out there which will report the
> temperature that at lest some of the drives sense.


i didn't know that there were any drives that reported temp... any
pointers?

> Note that I am not running it as a stripe, but rather as
> individual filesystems under Solaris 10, which may have some impact on
> things.


the only difference i can think if is that these 18 gig drives are
double height 3.5" rather than the little 4 giggers that were in it. i
pulled them out of an AlphaServer 1200 that started having /issues/
(hince the other DEC enclosuer i have).
the way FreeBSD does the stripe is that one sector is on one drive the
next is on the next drive and so on before going back to the first one
so it spreads the load pretty evenly across all the drives and, therfore
reading/writing at the same time across the file system /should/ be more
efficient. this just adds to the confusion on 1 particular drive or
another causing the issue since any 1 disk is only getting 1/6 of the load.

--
- - james <at> hal-pc.org - -

Something is wrong with this country when a particular party
wants to make a BIG stink (no pun intended) about someone
putting panties on a prisoner's head when this is happening:
** WARNING ** gruesome.
http://www.mensnewsdaily.com/video/a...ng-murder2.wmv
Some people need to *think* about their priorities.
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