QMS 2425, Reference

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The K Mem Disk Cache is the number of kilobytes of RAM dedicated
to the disk cache. This memory client speeds file system throughput
on any installed hard disks by storing frequently used data in system
memory instead of continually storing it to and retrieving it from a hard
disk.
The amount of memory needed for this memory client depends on
the size and number of hard disks, the number of subdirectories on
each disk, and the amount of memory dedicated to caching.
» Note: If sufficient memory is available to the disk cache, all disks are
accessible. If insufficient memory is available to the disk cache, some
disks may be accessible while others may not be.
The recommended amount of memory for the disk cache client is
„
120 KB minimum
„
0.5 KB per MB of disk storage total for all disks
For example, the recommended amount of memory for the disk cache
for a single 120 MB hard disk is 180 KB, and for two 120 MB hard
disks it is 240 KB. These are recommended values. The printer will
still operate with a smaller cache, but decreased performance may
result.
Menu Administration/Memory/Manual Config/K Mem Disk
Cache
Choices
00000-30720
Default 00256
Notes
If no hard disk is used, the disk cache will be set to the
minimum (zero). The printer then reallocates the
released memory to other clients that need additional
memory.
If you change the K Mem Disk Cache value, the printer
automatically restarts after you save your changes and
exit from the configuration menu.