Record number:       H16240
    Device:              D/T6560
    Model:               M
    Hit count:           UHC00000
    Success count:       USC0000
    Publication code:    PC50
    Tip key:             005
    Date created:        O97/06/27
    Date last altered:   A97/06/27
    Owning B.U.:         USA

    Abstract:  IMPROVING IDE HARDFILE PERFORMANCE ON PC340

  TEXT:
  In the IBM PC340 Series 6560 systems, IDE hardfile performance
  can be improved in BIOS levels 23 and above by adjusting the
  IDE Prefetch setting in the F1 Setup utility.

  During post, press F1 to enter the Setup utility. Highlight
  "Devices and I/O Ports" and press enter. Highlight "IDE Drives
  Setup" and press enter. The screen should be as follows:

                    Hard Disk Drive 0
                    Hard Disk Drive 1
                    Hard Disk Drive 2
                    Hard Disk Drive 3
             Drive 0 & 1 Prefetch (Disabled)
             Drive 2 & 3 Prefetch (Disabled)


  The IDE hardfile Prefetch is set to "Disabled" by default. IDE
  hardfile performance will be improved by highlighting the
  setting and changing it to "Enabled."

  Note that the setting cannot be changed to "Enabled" if there
  are any other IDE devices (e.g. IDE CDROM or tape drive)
  attached to the same cable as the hardfile. These will need
  to be attached to the secondary IDE controller on their own
  cable.

  SAS KEYWORDS:
     PSY2               PSY2FDSK           PSY2OPER           PSVP
     PSVPFDSK           PSVPOPER           D/T6560
     UNCLASSIFIED