QMS 860, User Manual, Page: 344 / 398

Virtual Memory Support
Your printer supports virtual memory capabilities for the spooling
buffer and the display list clients when a hard disk is installed and
disk swapping is enabled.
Once you have a hard disk installed on your printer, it has virtual
memory capabilities for specific memory clients, extending the
amount of memory available for certain supported features. Your
printer supports spooling overflow, which is an extension of the K
Mem for Spool memory client, collation, and it has a hard disk.
You can dedicate part of that disk for collation overflow or as an
extension of the display list memory client.
Spooling Overflow
The spool overflow option is located in the Administration / Disk
Operations menu. This option specifies the maximum space
reserved for spooling overflow on the hard disk.
When a print job is sent to your printer, a portion of that job is stored
in the spooling buffer (K Mem for Spool) while the rest of the job
is being printed. If all the memory in the spooling buffer is being
used and the Spool Overflow option is enabled, the printer stores
the “overflow” from the spooling buffer in a reserved area of the
hard disk. Even if you have a hard disk, you should allocate as much
RAM to the spool buffer as possible for increased throughput.
Reserving a 10-20 MB portion of the hard disk for spooling
overflow works well for most printing environments. If too much
of the disk is dedicated to spooling, the printer’s performance may
actually be hindered because the printer tries to fill the overflow
space before passing the job to the processor.
Appendix F
F - 1 6 A d d i t i o n a l T e c h n i c a l I n f o r m a t i o n