STAC ELECTRONICS TECHNICAL SUPPORT BULLETIN NUMBER: 009 SUBJECT: CACHE DATE: May 24, 1991 TIME: 3:00 PM SOURCE: Engineering, Tech Support SUPERCEDES/ SUPERCEDED BY: RELEASE STATUS: Public TITLE: STACKER and disk-cache programs. OVERVIEW: While STACKER includes its own cache, the driver is compatible with other products that perform the same function. Norton's NCACHE and Microsoft WINDOWS' SMARTDRV.SYS are loaded from the CONFIG.SYS, usually before STACKER. Other programs, such as PC-KWIK and PC-CACHE, load from the AUTOEXEC.BAT file, after STACKER. ISSUES/COMMENTS: 1) Some cache programs (e.g., PC-CACHE, PC-KWIK) may report that a particular drive letter is not eligible for caching, but caching proceeds normally. 2) When multiple cache programs are operating, disk reads/writes may have unpredictable results. Use of memory may also be negatively impacted. RECOMMENDED ACTIONS: 1) Alter the settings for the cache so that the uncompressed, host drive is cached. This will, by extension, cache any STACKER volumes residing on it. (The PC-KWIK message can be avoided by excluding the STACKER volume when the cache program is invoked. Consult PC-KWIK documentation for the appropriate parameter.) 2) If a commercial cache program is running, specify a STACKER cache of 0 bytes (/M=0)