Date: Wed, 7 Oct 1998 09:38:46 +0930 From: Greg Lehey <grog@lemis.com> To: Joe McGuckin <joe@monk.via.net>, questions@FreeBSD.ORG Subject: Re: proper CCD interleave ?? Message-ID: <19981007093846.W27781@freebie.lemis.com> In-Reply-To: <199810060916.CAA16999@monk.via.net>; from Joe McGuckin on Tue, Oct 06, 1998 at 02:16:06AM -0700 References: <199810060916.CAA16999@monk.via.net>
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On Tuesday, 6 October 1998 at 2:16:06 -0700, Joe McGuckin wrote: > > I'm building a server to perform nightly dumps to tape. > It's going to be reading large dump files, then streaming them to DLT. > > What's a good interleave to use? What about 65536? Do you mean bytes? That would be OK. My experiments have shown that 256 kB is about optimal. But note that you specify the interleave factor in ccdconfig in blocks of 512 bytes, so you'd specify these values as 128 and 512 respectively. Have you taken a look at vinum? You should find it better than ccd. http://www.lemis.com/vinum.html. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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