Date: Tue, 22 Aug 2000 07:50:11 +0200 From: sthaug@nethelp.no To: johnl@raccoon.com Cc: freebsd-scsi@freebsd.org Subject: Re: Different init speeds of raid5 plex subdisks under vinum Message-ID: <37075.966923411@verdi.nethelp.no> In-Reply-To: Your message of "Tue, 22 Aug 2000 00:43:48 -0500" References: <39A21314.1107B6AD@raccoon.com>
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> When I ran the vinum init command to initialize the plex, one of the > drives da2 completed the initialization 3-4 times faster than da1 > and da3. Something like 20 minutes for da2 versus 60 minutes for > da1/da3. Both da1 and da3 initialized at the same rate. Is this > weird? Did da3/da1 get transfers negotiated down to slower speeds? > Bad cabling? I noticed a similar problem when initializing a 4-disk RAID5 array some weeks ago. In my case I had two disks on ATA-66 controllers and two disks on ATA-33 - and the ATA-66 connected disks initialized at roughly double the rate of the ATA-33 connected disks. I simply assumed it was due to difference between the ATA-66 and ATA-33 speeds. Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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