Re: A1000 systems and 18GB SCA drives

[Dave Torrey <tj@xxxxxxx>]

If I remember correctly (having been involved in their removal from
service), the cabling came with either the A1000's or the host adapters.
You might inquire, as they may not have a use for any of that equipment
now.  It would also be useful to review the manual(s) from Sun.

In reference to the drive size, I believe the 8-drive chassis is 1.6"
drives, while the 12-drive chassis is 1".  They have different
capacities that may be tied to the controller, and certain requirements
for the drives, IIRC.  Just be aware before swapping drives around or
buying new ones.  A1000's are pickier about that sort of thing than
modern JBOD and RAID boxes.

Dave

On Wed, 2007-09-19 at 07:30 -0500, Dan Sauer wrote:
> Recommend that we jump on this as soon as possible.  Even if we later
> decide not to use the drives, it would be better then later deciding that
> we could use them and not have access to them.  LUG alumnus may be able to
> donate toward cabling that may be needed (scsi cabling appears to not be
> cheap - having gone through this myself).
> 
> Best Regards,
> Dan
> 
> 
> > I'm a fan of storage, especially when it's SCSI, and its free.
> >
> > * The A1000 has onboard RAID, definitely a plus. (The D1000 is the JBOD
> > model)
> >
> > * Are the 36gb drives 1" or 1.6" height?
> > * Are the batteries for the BBU in good shape?
> >
> > * The A1000 uses HVD SCSI. We don't have hardware for that, but I've got
> > an HVD card (although I can't test it) sitting here if the LUG wants it.
> > You'll still need cabling, of course.
> >
> > * We'll overload the UPS with all 3 of them on there once we get minerva
> > back online, but with the current state (lacking minerva), we can power
> > all three, but just barely.
> >
> > * I'm not sure we'd have anywhere to put these except on the floor where
> > flyer used to be, but that might be good enough.
> >
> > So, if they're all 1" disks, I'd say get all 3, swap them so the 36gb
> > disks are in the 12-slot chassis, then fill up one of the 8-slot chassis
> > with the remaining disks, and then we'll have some spares. If they're
> > not 1", then run one 8-slot and one 12-slot chassis and call it good.
> >
> > Of course, you'll want to get buy-in from the actual LUG sysad; I'm just
> > throwing out ideas from 400mi away.
> >
> > --
> > Peter Corbett
> > peter@xxxxxxxxxxxxxxxxxx
> >
> 
-- 
Dave Torrey <tj@xxxxxxx>
Michigan Technological University