Date: Thu, 24 Jul 1997 10:22:31 +0100 From: Damian Hamill <damian@cablenet.net> To: Simon Shapiro <Shimon@i-Connect.Net> Cc: freebsd-scsi@freebsd.org Subject: Re: New DPT Driver Message-ID: <33D71ED7.69D8BD19@cablenet.net> References: <XFMail.970723232148.Shimon@i-Connect.Net>
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Simon Shapiro wrote: > > > Then there is the sticky issue of what stripe size to use. You, in the > * Most news servers use the Unix file system. Right? > * Last I saw, ALL F/S I/O was done in 4Kbytes chunks. > The only way I can see 32MB stripes being even usable, is in setting them > up as CCD stripes of this size. Of course, then you really do all your > I/O in... 4096 bytes. I'm in the process of constructing some news servers and I intend to use ccd. What figure should I use as the interleave factor. The man page suggests that a high figure such as 65,536 should be used for news servers. The system has 8 ST5120N (2 gig narrow, 4500 RPM) drives, and I'm running the busses in Ultra mode (20 Mbps). regards damian -- * Damian Hamill M.D. damian@cablenet.net * CableNet & The Landscape Channel * http://www.cablenet.net/ http://www.landscapetv.com/
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