SSC-3: Discussion related to Letter Ballot comment HPQ-70
Kevin D Butt
kdbutt at us.ibm.com
Thu Jun 19 12:58:50 PDT 2008
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HPQ-70: First paragraph in the section - ". . . enough space in the
partition for the application client to write any buffered logical object
in the application client buffer to the medium." - What is the application
client buffer? Is that different from the object buffer? If so then a
definition is needed.
4.2.5 Programmable early warning
When writing, the application client may need an indication that it is
approaching early warning (see 4.2.4) while there is enough space in the
partition for the application client to write any buffered logical objects
in the application client buffer to medium.
Application clients that need this indication may set the PEWS field (see
8.3.8) to a value that creates a PEWZ that allows sufficient recording
space for the data that is in the application client buffer.
An application client may need the capability to tune the system for user
applications that reside inside the application client. One of the
parameters that may need tuned is how soon prior to receiving an early
warning indication the user application needs to be notified to prepare
the application client to optimally react to early warning. This tuning
may be accomplished by setting the PEWS field (see 8.3.8) to a value that
creates a PEWZ.
Figure 10 shows an example of the PEWZ.
==========> How does this look as a draft proposal?
Kevin D. Butt
SCSI & Fibre Channel Architect, Tape Firmware
MS 6TYA, 9000 S. Rita Rd., Tucson, AZ 85744
Tel: 520-799-2869 / 520-799-5280
Fax: 520-799-2723 (T/L:321)
Email address: kdbutt at us.ibm.com
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