Sony Storage Support

Storage Support USA

Microsoft Adaptec Ultra160 Win2K Driver Issue

Answer:
  • Products:
    SDX-700C,SDZ-100,LIB-81-A3,LIB-162-A3/LIB-302-A3

  • Problems:
    With non-disk device such as SONY SDX-700C and SDZ-100 Tape drive, the Microsoft Win2K and XP Adaptec Ultra160 drivers* do not negotiate transfer rate, all subsequent IO transfers occur as Asynchronous.

    *ADPU160M.SYS, ADF6U160.SYS

  • Symptoms:
    This issue will cause poor Backup and Restore performance because of the low Asynchronous speed..

  • Fix:
    Please install Adaptec SP5 available at:

    http://www.adaptec.com/worldwide/support/suppbyproduct.jsp?sess=no&language=English+US&cat=%2FTechnology%2FSCSI+Host+Adapters&fromPage=driverindex

    If you are still having Backup and Restore performance issues after upgrading the Ultra160 driver please check tape drive Write and Read quality and Disk / File system performance.

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