Path: utzoo!censor!geac!torsqnt!lethe!yunexus!davecb From: davecb@yunexus.YorkU.CA (David Collier-Brown) Newsgroups: comp.sys.dec Subject: Re: many SCSI disks on 2100s? Message-ID: <18589@yunexus.YorkU.CA> Date: 4 Dec 90 19:29:51 GMT References: Organization: York U. Computing Services Lines: 26 Steve_Lammert@TRANSARC.COM writes: >I'd like to add a fourth WREN VII to these systems, but worry >about the ability of the 2100 to handle this configuration. I'm mildly doubtfull **if the server is functioning as a workstation at the same time**. Using somewhat slower RZ56's we found a combined station/fileserver was not giving good performance with three disks, bud did give good performance with a pair of Wrens. I didn't measure anything, so I don't know for sure what ``knee'' we hit, but I mildly suspect total i/o's per second, based on some measurements on non-workstation servers with three RZ56s >Is anyone successfully pushing a 2100 as a file server with >a similar configuration? Yes and no: our other configuration is one 2100 to 11 diskless clients, and the performance problems there are strictly bottlenecks in swap i/o (not that I would recommend diskless 2100s to my worst enemy, you understand). There are no visible bottlenecks on the non-swap disks. --dave -- David Collier-Brown, | davecb@Nexus.YorkU.CA, ...!yunexus!davecb or 72 Abitibi Ave., | {toronto area...}lethe!dave or just Willowdale, Ontario, | postmaster@{nexus.}yorku.ca CANADA. 416-223-8968 | work phone (416) 736-5257 x 22075