Xref: utzoo comp.unix.xenix.sco:2220 comp.unix.xenix.misc:164 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!milano.sw.mcc.com!cactus.org!statham From: statham@cactus.org (Perry L. Statham) Newsgroups: comp.unix.xenix.sco,comp.unix.xenix.misc Subject: speed problems with EISA motherboard Keywords: EISA ESDI speed disk controller Message-ID: <6428@cactus.org> Date: 15 Apr 91 19:39:23 GMT Organization: Capital Area Central Texas Unix Society, Austin, TX Lines: 21 We have recently upgraded from a 485/25 ISA motherboard to a 486/33 EISA motherboard. We use SCO Xenix 2.3.3 and have two ESDI hard disks. The problem is that there do not seem to be very many EISA/ESDI hard disk controllers on the market and therefor our throughput is even lower than before we got the EISA board. We have tried the UltraStor controller but they do not have a Xenix driver for it to make use of the cache. Our applications are very database intensive and we have an average of 21 users on the system during the day. We are using an intelligent I/O sub- sytem with it's own cache so we do not think it is the bottleneck. Does anyone have any suggestions? At this point we are getting desparate yet we do not want to switch our disk sub-system to SCSI and upgrading to SCO Unix can be prohibative. Thanks in advance, Perry Lee Statham statham@cactus.org (512) 335-3881