Altering block size support for tape devices
Dan Davies - Overland Data
ddavies at cts.com
Tue Jan 23 11:21:03 PST 1996
* From the SCSI Reflector, posted by:
* <Dan Davies - Overland Data <ddavies at cts.com>>
I don't have any real issues with your proposal to add granularity
information to the Read Block Limits command, but I'm curious where you
find the words in SCSI-2 that mandates support for all block sizes in a
range. I only see that a minimum and maximum block size is
reported, not the entire range of values between those limits.
Am I missing something obvious?
On Mon, 15 Jan 1996 tedl at exabyte.com wrote:
> Subject: Block size granularity for sequential devices
> The current model for sequential (tape) devices requires that all
> block sizes be supported in a range. Support of odd block sizes
> is potentially costly, particularly with wide SCSI interfaces.
> Additionally, some existing products support more than one block
> size but not sequentially (such as 512 and 1024).
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