Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!ut-sally!utah-cs!cetron
From: cetron@utah-cs.UUCP (Edward J Cetron)
Newsgroups: comp.sys.dec
Subject: Re: MicroVax II configurations
Message-ID: <4803@utah-cs.UUCP>
Date: Wed, 5-Aug-87 18:15:13 EDT
Article-I.D.: utah-cs.4803
Posted: Wed Aug  5 18:15:13 1987
Date-Received: Sat, 8-Aug-87 05:40:25 EDT
References: <269@ddsw1.UUCP>
Reply-To: cetron@cs.utah.edu.UUCP (Edward J Cetron)
Distribution: na
Organization: Center for Engineering Design, Univ of Utah
Lines: 30

In article <269@ddsw1.UUCP> michael@ddsw1.UUCP (Michael Duebner) writes:
>
>We would like to use the following configuration
>
>MicroVax II BA-123
>	16 MB of RAM
>	4 RD-54 fixed disk drives
>	4 DHV-11M communications boards
>	TK-50 tape drive

	1. there is enough PHYSICAL room in a ba123 for 5, 5&1/4" form
factor devices. 

	2. The RD54's take a lot of POWER.

	3. RD54's get HOT....

	4. Given the current ba123 cooling system, and power supplies (dual)
DEC  only supports three RD53's (or 2 RD54's and one RD53 or ...) and one
TK50 per box.

	5. personally, I would use two RD54's and the tk50 in the box, and
two RD54's in external boxes with external power supplies.... 

	6. but then again, I can't remember if you can run the signals out
from the distribution panel of a ba123...if you can, 5 is the best approach.
(doesn't the external boxes require rqdxe's??)

-ed cetron
cetron@cs.utah.edu