[rescue] what are these?

Mike Hebel nimitz at nimitzbrood.com
Sun Mar 6 00:05:41 CST 2005

On Mar 5, 2005, at 10:13 PM, Jonathan C. Patschke wrote:

> On Sat, 5 Mar 2005, Patrick Giagnocavo wrote:
>> digital rackmount item RA81
> That's a HEAVY 450 megabyte SDI hard drive.  If it hasn't been parked
> properly, it won't survive shipping, anyway.

If it's the same as the RA82 you have to lift up the cover on it and 
verify that the small plastic park lever is locked.


It's the little white lever on the drive casing just in front of the 
circuit board.

*google* Ahhh!   Here we go!


Complete pics of an RA81 with commentary.

>> are either of them something interesting to those on the list?
> The RA81 will work with a PDP/11 or VAX that has the proper controller.
> They're big, heavy, and power-hungry.  For anyone wanting to one them
> for any reason other than to relive old memories, I'd recommend an SDI
> bridge with a newer drive on the other end.

These take greater than 10A (AMPS) to just spin up.  I have a Microvax 
II with an RA82 that I'm not currently running because I don't have 10A 
to get the drive up to speed before it times out it's startup.

Mike Hebel
"The very young do not often do what they are told." - The Nox

More information about the rescue mailing list