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Path: utzoo!linus!vaxine!wjh12!foxvax1!brunix!ulysses!smb
From: smb@ulysses.UUCP (Steven Bellovin)
Newsgroups: net.unix-wizards
Subject: advice wanted on multiple-UDA50 configuration
Message-ID: <688@ulysses.UUCP>
Date: Mon, 7-Nov-83 15:41:48 EST
Article-I.D.: ulysses.688
Posted: Mon Nov  7 15:41:48 1983
Date-Received: Tue, 8-Nov-83 22:00:00 EST
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 14

We're considering configuring some new 780s with only RA81 disks.
In particular, we're thinking of getting 4-6 RA81s connected to two
UDA50s, each on a separate UNIBUS.  UNIBUS 0 would also have the
usual communications gear, including some flavor of Ethernet controller.
Any comments on this configuration?  If we were to stick with 4 drives,
does it even make sense to get two controllers, or should we hang them
all on one, on its own UNIBUS?  Any comments or suggestions will be
appreciated.

		--Steve Bellovin
		ulysses!smb

Note:  we already have 8 RA81s on assorted other machines; they've run
well after some infant mortality problems.