[2376] in SIPB-AFS-requests
Re: Stopped disk fans
daemon@ATHENA.MIT.EDU (John Hawkinson)
Wed Jun 12 06:06:08 1996
Date: Wed, 12 Jun 1996 06:04:41 -0400 (EDT)
To: sipb-afsreq@MIT.EDU, rtfm-maintainers@MIT.EDU, usenet@MIT.EDU
In-Reply-To: "[2374] in SIPB-AFS-requests"
From: John Hawkinson <jhawk@MIT.EDU>
The outage began soon after 3:15am. Present were marthag, ghudson,
and myself. We concluded shortly after 5:25, with ra2 not being
fully functional until around 5:38.
We discovered that mounting half-height drives in full-height
enclosures is suboptimal -- the mounting brackets and holes in the
drives do not line up well; the result is that it is only feasable to
screw drives into their mounting bracket with one screw, and the drive
remains at an angle (circa 20 degrees) rather than level.
[ I will move for sipb to purchase a drill next meeting ]
We mounted all five drives this way, and covered the front of the
enclosures with duct tape, and cut slits for ventalation. We did not
remove leds from the half-height enclosures, so the four enclosures
that replaced half-heights do not have externally visable leds. The
disk on bed has a LED that's visible if the tape is removed, however.
picayune, bed, and reynelda were relatively uneventful. ra2
experienced problems with scsi disk 4 (/vicepe), detailed in ghudson's
mail.
reynelda and ronald-ann2's SCSI cables are now spanning a slightly
larger distance than they used to, due to the additional height of
full-height enclosures. That cabling situation ultimately needs to be
rectified, though how is not clear without deploying racks, or some
other method of moving the disks closer to the machines.
We expect to solve the mounting hardware issue prior to the installation
of replacement disks from R^2.
We have not yet generated new labels or dealt with straightening
out the issue of MIT TAG numbers (which evidently belong to disks
but are attached to enclosures). Advice (jweiss?) on this topic
might be useful.
The new micropolis on reyelda is serial number 5071740232A, and is a
Micropolis model 3243.
I believe that's it. There were no accidental outages.
--jhawk
