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DateSun, 11 Jan 1998 22:40:46 -0800
From"Leonard N. Zubkoff" <>
SubjectRe: devfs
  From: Michael Neuffer <neuffer@goofy.zdv.Uni-Mainz.de>
  Date: Sun, 11 Jan 1998 11:08:34 +0100 (MET)

  > 256 LUN's per SCSI ID?  Gosh!  2.0.33 has 7 or 8 or 32 (depending on the
  > driver).
  Yes, that is indeed too high. There are 3 bit defined for this.

32 LUNs are actually used in practice in some installations, so limiting our
device numbers is not really a good idea.  3 bit LUNs are only allowed in the
CDB itself, but there are 6 bits actually available in the IDENTIFY message.

I seem to recall that one of the newer SCSI specifications actually allows 8
bits for LUN, but that doesn't apply to parallel SCSI.

		Leonard

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