Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!apple!portal!cup.portal.com!Rob_Steven_Kramarz
From: Rob_Steven_Kramarz@cup.portal.com
Newsgroups: comp.periphs.scsi
Subject: Warm swap
Message-ID: <42001@cup.portal.com>
Date: 4 May 91 18:15:32 GMT
Organization: The Portal System (TM)
Lines: 8

Experimentally, I have found that warm swap works consistently.  I have
never tried a hot swap and do not intend to since theoretically it is
disastrous.  If you do plan to do a warm swap, make sure that the bus
truely is inactive (unmount all file systems, or use a driver which
allows the on-off status of the bus to be toggled at the driver level.
My expertise in this area derives from our work at 1776, Inc. on
disk mirroring and disk array device drivers, where this question
is very germaine to our customers.