CACHEJFS.EXE

The CACHEJFS.EXE command allows the lazywrite parameters to be changed immediately. The syntax is to the IFS line, except that the /L: prefix is optional. In addition, the CACHEJFS command can modify the minimum and maximum number of free cache buffers to be maintained. Calling CACHEJFS with no parameters reports the current settings.

CACHEJFS [[/LAZYWRITE:]{OFF|syncTime[,maxAge[,bufferIdle]]}] /MINFREE:minfree /MAXFREE:maxfree

Because JFS allows fragmentation, a utility, DEFRAGFS, is included with JFS. All these abilities are enabled when formatting a volume with the FORMAT command.