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From: karl@mtu.UUCP (Karl Ottenstein)
Newsgroups: net.dcom,net.unix
Subject: Advice Sought on DMF32's versus DZ/DH-11's
Message-ID: <161@mtu.UUCP>
Date: Sat, 30-Mar-85 18:47:46 EST
Article-I.D.: mtu.161
Posted: Sat Mar 30 18:47:46 1985
Date-Received: Wed, 17-Apr-85 00:32:53 EST
Distribution: net
Organization: Michigan Tech, Houghton, MI
Lines: 24
Xref: watmath net.dcom:943 net.unix:4254

We currently have a 750 running 4.2 with 24 ports of DMF32.  (8 ports DEC,
16 Emulex).  We need 8 more ports, primarily to add 3 additional dial-up
modems.  Most of the existing ports are terminals or graphics devices.

We have had numerous modem problems which I ascribe to the DFM32 driver.
(Anyone else have problems or know of fixes?)  Thus, I am leaning towards
a DZ-11 look-alike or a DH-11 look-alike.  I have the possibility of
trading my 8-port DMF32 for a 16-port DZ-11.  Does anyone have any
experience which would indicate that I would be foolish to opt for a
solution which would be 16 ports of DMF32 and 16 or DZ-11 [in terms of
performance, given the capabilities of the DMF32] as opposed to a
solution which would retain my 24 ports of DFM32 and add 8 ports of DZ??
Note:  cost is a key criterion here, as we don't want to sink more than
$1,000 or so into the new ports.

Thanks in advance to all respondants.  If requested, I'll post a
summary of comments on DMF32 vs DZ/DH performance to the net.

-- 

		Karl Ottenstein
		Michigan Technological University
		uucp: {lanl, ihnp4, glacier}!mtu!karl
		arpa/csnet:  karl%mtu@csnet-relay