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- ID:SD SMARTDrive from Microsoft
- Quarterdeck Technical Note #184
- by Stan Young
-
- Using Microsoft's SMARTDRV.SYS
-
- The Windows Setup procedure installs Microsoft's disk cache
- called SMARTDRV.SYS. The default size of this cache tends to be
- large. Windows can reclaim memory from this cache when it starts
- up, however programs that are run outside of Windows which use
- expanded memory cannot do this. If you run programs outside of
- Windows which would benefit from expanded memory, you may want to
- consider either removing SMARTDRV.SYS entirely from your
- CONFIG.SYS file, or at least reducing its size.
-
- SMARTDRV.SYS takes parameters to set the size of the cache, the
- first parameter being the "NormalCacheSize" and the second being
- the "MinimumCacheSize". An example SMARTDrive installation might
- look as follows:
-
- DEVICE=C:\WINDOWS\SMARTDRV.SYS 1024 256
-
- In this example, SMARTDrive takes 1024K (1MB) of memory when you
- are not in Windows and 256K while you are running Windows. While
- it is difficult to suggest a cache size that might be best for
- you, one possible suggestion might be to use the minimum amount
- only. To do this, using the example above, you would edit the
- line to read:
-
- DEVICE=C:\WINDOWS\SMARTDRV.SYS 256 256
-
- No problems have been detected between any Quarterdeck products
- and this cache, so if you feel you would benefit from disk
- caching, and SMARTDrive meets your performance requirements, it
- should be fine to use. As noted the default size tends to be a
- bit large for users who are using programs that benefit from
- expanded memory, but the information above should give you some
- hints on how to adjust this usage.
-
- Only you can determine the appropriate size of the cache,
- depending on how disk intensive your programs are, compared to
- your programs need for expanded memory. If you are not running
- programs that are disk intensive, deleting the cache entirely may
- make sense.
-
- Further information on the parameters used to control the size of
- SMARTDRV.SYS can be found in the back of the Windows 3.0 manual.
-
- Copyright (C) 1991 by Quarterdeck Office Systems
- * * * E N D O F F I L E * * *