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STACKER NOTE                                                   STACKER NOTE
Title: Creating a Stacked RAM drive for Windows Temporary Swap Files 
STAC FAX Index #3201 - 02/08/93                         
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Background.

   Windows can use temporary or permanent swap files as pseudo-memory.  A
   permanent  swap  file  can  only  be created  on a  physical drive.  A 
   temporary  swap  file can be created on either a physical  or  logical
   drive.  Temporary swap files are much slower than permanent swap files
   because DOS must be used to access them.  A temporary swap file  on  a
   Stacker  drive is even slower. A temporary swap file on a Stacked  RAM
   drive,  however,  can be faster than a permanent swap  file.  With  an
   observed compression ratio of 3.0:1, 3Mb of RAM  that is allocated for
   this  purpose  gives  a total of 9MB of usable memory  for  a  Windows
   temporary swap file.

Procedure.

   Modify  your  CONFIG.SYS file to create a RAM drive.  In  the  example
   below, X: is a generic representation of the drive letter for your RAM
   drive.  Substitute the actual drive letter taken by your RAM drive for
   all references to X: below.

   Sample CONFIG.SYS file.
      
DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\RAMDRIVE.SYS 3072 /e (Add this line to create the RAM drive)
DEVICE=C:\STACKER\STACKER.COM C:\STACVOL.DSK @
DEVICE=C:\STACKER\SSWAP.COM C:\STACVOL.DSK /SYNC+
DEVICE=C:\STACKER\SCREATE.SYS X: /r=3 (Add this line to Stack your RAM drive)
where X: = the drive letter for the RAM drive

   The  next  step is to add a line to your AUTOEXEC.BAT file, following
   the PATH command line, to mount the Stacked RAM drive:

   C:\STACKER\STACKER X:

   Those  of  you who do not use Windows exclusively may want to  add  an
   additional two lines to the AUTOEXEC.BAT file.  This will permit other
   DOS-based  applications  to  use the Stacked  RAM  drive  for  storing
   temporary  files:  These two lines should added after the  command  to
   mount the Stacked RAM drive referenced above.

   SET TEMP=X:\
   SET TMP =X:\

   Finally, in the Windows SYSTEM.INI file, make the following changes or
   additions  to  allow  Windows  to use the  Stacked  RAM  drive  for  a
   temporary swap file:

   [386enh]
   PagingFile=X:\WIN386.SWP
   MinUserDiskSpace=1
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Copyright 1993, Stac Electronics