Xerox 701P47301 - Manual (Page 41)

IPDS User Guide 3- 19
Using Xerox FreeFlow® Print Server IPS Manager
NOTE: The constraints are not applicable to multiple copies
requested by the IPDS job. Copygroup and Copysubgroup
processing is performed properly as per the IPDS specification. If
job accounting on the host is to be accurate, multiple copy control
should be done by the IPDS job and not by the output Quantity in
the queue.
Page Counting Constraints and Considerations
There are a number of limitations and considerations that must be
taken into account when saving, or concurrently printing and
saving IPDS jobs:
• When saving a job to a write-once target, such as CD-ROM,
Xerox FreeFlow® Print Server Save Job processing can only
write the data to the media when the job is complete.
However, the IPDS host requires the printer to provide
acknowledgements as each page is stacked. Therefore, Xerox
FreeFlow® Print Server IPDS must report pages to the host as
stacked as they are processed, even though they are not yet
written to the output media. For this reason, Xerox FreeFlow®
Print Server cannot support IPDS host recovery for jobs saved
to write-once media. This limitation is not a concern when
saving jobs to rewritable media, such as a local disk drive.
• When a failure occurs while the print server is saving an IPDS
job to a rewritable media, the IPDS host will send the
remainder of the job from its latest checkpoint, based on the
stacked page counts it has received from the printer. Xerox
FreeFlow® Print Server is not able to automatically append
this additional data to the original save job file. Therefore, to
ensure that the remainder of the job does not overwrite the
original data, before initiating recovery, the user must ensure
that a different file name is used for the remainder of the job.
This limitation also applies to the save job component of Print
and Save jobs.
• Xerox FreeFlow® Print Server supports simultaneous printing
and saving of the same job, but the page counts reported to
the host only reflect the status of pages being printed, not the
status of pages being saved. Therefore, if a Print and Save job
fails before completion, the number of pages saved may differ
from the number of pages printed.
• If a Print and Save job terminates abnormally, the host will
base its recovery on the count of pages actually stacked at the
printer, not on the number of pages saved. In most cases,
recovery of the saved portion of the job will not be affected,
since Xerox FreeFlow® Print Server will normally save pages
faster than it can print them. However, there is a possibility
that printing could get ahead of saving. If this occurs, and
there happens to be a failure, the host could fail to retransmit
some pages that were not saved before the failure.
• During a Print and Save job, saving will usually progress faster
than printing, while the stacked page counts provided to the