Date: Wed, 11 Nov 1998 09:16:01 +0100 (CET) From: Søren Schmidt <sos@freebsd.dk> To: john@isi.co.jp (john cooper) Cc: grog@lemis.com, hackers@FreeBSD.ORG, mike@smith.net.au, ticso@cicely.de, john@isi.co.jp Subject: Re: SCSI vs. DMA33.. Message-ID: <199811110816.JAA01536@freebsd.dk> In-Reply-To: <98Nov11.134648jst.21907@ns.isi.co.jp> from john cooper at "Nov 11, 1998 1:41: 0 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
It seems john cooper wrote: > > Hi, > Just wondering if anyone has any _objective_ opinion on > the performance of say wide SCSI2 vs. DMA33 IDE drives [running > on contemporary motherboards]. The theoretical throughputs of > 40MBs and 33MBs don't tell me a whole lot. I know SCSI was the > choice for performance in the past, however I'm curious what > others are seeing in actual usage these days. Well, at my ISP we run 4 NFS servers that handels all mail/web/misc stuff for the users, needless to say they are "used" alot. Those 4 machines are P233/64M PC's with 4*4.3G UDMA IDE drives in them, configured in pairs as mirrors with ccd. They perform wonderfully. And the price cannot be beaten too :) I must say that the newer UDMA IDE drives has come a long way lately, they perform at least as good as their SCSI counterparts. The only thing that they cannot do is overlapping commands, but given EIDE's much smaller cmd overhead, I'm not sure this has any significance at all in practice. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Søren Schmidt (sos@freebsd.org) FreeBSD Core Team member To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199811110816.JAA01536>