H135274 - SERVER 704 RAID TIMEOUT WITH MICROSOFT EXCHANGE SERVER
 
 SYMPTOM:
 The IBM PC Server 704 (8650) may receive a RAID timeout error
 while running the Performance Optimizer in Microsoft Exchange
 Server.
 The following error messages may be displayed in the Windows NT
 event viewer:
 
 (stop) Source: DAC960NT.SYS
 
 (stop) The,  DEVICE SCSIPORT0, did not respond within the
        timeout period.
 
 PROBLEM ISOLATION AIDS:
 All of the following must be true for this tip to apply:
 - The PC Server 704 has an IBM PCI RAID Adapter FRU p/n75H9011
 - The RAID Adapter firmware level is 2.60
 - The Operating System is Windows NT Server 3.51
 - The error occurs with Microsoft Exchange Server or other
   applications running under Windows NT 3.51 Server
 
 FIX:
 Do not replace any hardware.
 
 Flash the IBM RAID Adapter with firmware version 2.63.
 
 Call the IBM HelpCenter to obtain instructions for downloading
 the RAID firmware version 2.63 which is located on a private
 directory on the IBM Bulletin Board.
 
 .--------------------  IMPORTANT  -------------------------.
 |  The firmware is customer installable. Customer's should |
 |  contact the IBM PC HelpCenter at 800-772-2227 to obtain |
 |  the current firmware.  Customers in Canada should call  |
 |  IBM's HelpPC at 800-565-3344.                           |
  ----------------------------------------------------------
 
 Windows NT is a trademark of Microsoft Corporation.
 
 November 20, 1996