    AST RESEARCH, INC.         TECHNICAL BULLETIN #0845               07-20-93

                PREMIUM SE WITH TAPE BACKUP PROBLEMS AND BANYAN VINES

    PROBLEM:       While performing a tape backup under Banyan Vines 4.11(5),
                   AST's Premium SE intermittently locks up.

    SYSTEM         1.  AST Premium SE 4/50 with BIOS release 2.00
    CONFIGURATION: 2.  DPT PM2012B/90 EISA SCSI Controller with firmware release
                       003.G
                   3.  GigaTrend SL 4mm DAT Drive with firmware release 1.191
                   4.  Banyan Vines Release 4.11(5).

    CAUSE:         The release of firmware in GigaTrend's SL 4mm DAT  drive.

    SOLUTION:      Upgrade the firmware in GigaTrend's SL 4mm DAT drive to
                   release 1.261 or higher.