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AST RESEARCH, INC.        TECHNICAL BULLETIN # 1150                 4-11-95

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			 MANHATTAN P 5090 NETWARE 3.1X I/O PROCESS HANGS


PROBLEM


While performing disk I/O on the Manhattan P 5090 system, during file 
transfer, the I/O may hang.  The monitor may indicate that there are current 
disk requests pending.  The number of pending disk requests may range 
from 1 to 5.  The server itself is not hung as the monitor can be exited and 
restarted.  When restarted, the disk I/O will start up again and then 
eventually go back to the same hung state.

A related issue may surface: if there are many file transfers in I/O on one 
channel, the other channel may be inaccessible.


CAUSE

With some tuning paramenters, file NCRSDMS3.DSK may cause I/O 
pending.


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501502-XXX MANHATTAN P 5090 - All Models


SOLUTION

At the NetWare prompt, type 

	LOAD NCRSDMS3.DSK 

without any tuning paramenter and press the <Enter> key.  The system will 
no longer hang during the I/O process.