Orange Micro RAMPAK 4GS, Operator'S Manual, Page: 19 / 25

the ON/OFF selection ,indicating whether or not a
cache will be active on the specified drive. Again,
pointing and clicking with the mouse will make the
selection. After ON is selected, a cursor will appear in
the DISK MAXIMUM CAC HE SIZE box at the bottom of
the cache section of the screen . Use the keyboard
to enter the desired size of the cache. Click on the ON
box a second time if you need to change the cache size
to a different number. (“Blocks” are the recognized
measure of disk storage. One block equals 512 bytes of
RAM. A maximum size of 64 blocks is recommended,
with a minimum of 8 blocks). In the TOTAL BUFFER
POOL SIZE section of the screen you will notice that the
amount of memory allocated to caching is updated as
you designate disk cache sizes
.
Please note that
the Total Buffer Pool Size defaults to automatically show
the size of the current buffer pool, created via Dynamic
Cache Alllocation. When the desired settings have
been made, click on the “OK’ box to return to the
menu bar.
N O T E : The
Total
Buffer Pool Size is limited to 3.5
megabytes, or 65,535 buffers. During manual cache
allocation, the Total Buffer Pool Size equals the sum of all
the buffers allocated for all active drives. If this total
exceeds 65,535, the display will show only the difference
between the total number of buffers allocated and 65,535.
In addition, the utility will only allocate this difference as the
Total Buffer Pool Size. As a result, if the Total Buffer Pool
Size displays fewer buffers than you have allocated, you
should begin decreasing the number of buffers on each
active drive until the Total Buffer Pool Size displays the sum
of the buffers in all active drives.
Dynamic Cache Allocation
This selection will take over all the caching functions
of the manual allocation menu for you, dynamically
updating the allocations as appropriate for your
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