Date: Wed, 2 Jun 2004 06:35:02 -0700 (PDT) From: Dan Strick <strick@covad.net> To: dwmalone@maths.tcd.ie Cc: freebsd-scsi@freebsd.org Subject: Re: 1TB issue Message-ID: <200406021335.i52DZ2eD034042@mist.nodomain>
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On Wed, 2 Jun 2004 10:49:39 +0100, David Malone wrote: >> > I've heard from some people that there was a 2TB limit on SCSI > devices, but it wasn't clear to me if this was a limit of the SCSI > implementation they were using, or if it arose from the SCSI spec. > What's actually the case here? >> The group 1 SCSI read/write command descriptor blocks have only a 32 bit field for the device address (block number). 2^32 * 2^9 = 2^41 The group 4 SCSI read/write commands defined in the not-yet-published SCSI Block Commands-2 (SBC-2) standard have a 64 bit field for the device address. Dan Strick
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