Default File System Cache Sizes

Although the installation defaults might not be specifically customized to a particular system, it is beneficial to have access to larger cache sizes. Therefore, install OS/2 2.0 with larger cache sizes when additional memory is available on the system. Conversely, reduce the cache size if there is less memory available on the system.

The default values are shown in Table [*]. If only the FAT file system is installed, the default sizes are for the DISKCACHE= statement in the CONFIG.SYS file. If the system has partitions that are all HPFS, the default size is for the IFS=HPFS statement in the CONFIG.SYS file. If the system uses both file systems types, then OS/2 2.0 installation changes the cache size for both file systems. The file system with the largest total amount of DASD (sum of the partitions) gets the larger default value, as shown in Table 2.


Table: Cache Sizes
MEMORY SIZE IN MB TWO FILE SYSTEM ONE FILE SYSTEM
4 128/64 128
5 128/64 128
6 256/64 256
7 256/128 256
8 256/256 384
9 256/256 384
10 through 16 512/512 1024
17 through 32 1024/1024 2048