Conference ssag::ask_ssag

6534.0. "KZPSC+AS4100 hangs if WNT HCT run" by EWBV03::HASEGAWA (Katsuya HAsegawa) Tue Apr 01 1997 08:49

	I have a problem with KZPSC-XB (3 channel raid) and Alpha Server4100.
	
	I have created RAID 0 mirror set on KZPSC using RCU, then I installed
	Windows NT 3.51 into D: drive.  Heavy load to the system disk causes
	SCSI bus reset and system hangs. Sometime the disk access stops. 
	It looks like HBA initiated scsi bus reset.  
	Here is the configuration.

	Alpha Server 4100 5/400, dual processor , 1 gb memory,  AlphaBIOS 5.28
	KZPSC-XB revision D01,   Tow RZ29B-VW are connected KZPSC using 
	BA356-KC split bus.    KZPSC write back cache is enabled.  SCSI 
	transfer rate is 10M. 

	I used Windows NT Hardware Compatibility Test (HCT) disk stress 
	program to simulate user job.  Parameter of diskstress is c:12, D:25.
	I think this is maimum load to the disks. 

	Swapping AlphaServer4100 with 5/300 , removing 1 cpu, swapping kzpsc
	, swapping ba356 and cables did not help.   I tried Windows NT 4.0 
	but the problem persists. 
	I tried to change cache size on KZPSC. Both 4mb and 32mb 
	configuration caused the problem. 
	This problem did not happen on AlphaServer2100A with exacly same 
	option and configuration. 

	The only workaround was to disable write back cache.  So I think 
	this problem originates from the combination of Alpha Server 4100
	and KZPSC. 

	Is this problem already IPMTed? 

	Thanks 

	Katsuya

	DAC960Nt.SYS Revision 4.03H resolved this problem.	

	Thanks

	Katsuya

  Is this driver available on the web ?

    
    I'd start with the 1.05 kit, available from akin40.ako.dec.com
    
    
    It is DAC960NT.SYS Version 4.03k, 4.03h I haven't a clue.....
    
    chet

 You can obtain the V4.03h driver from our web page:

   http://osfsrv.shr.dec.com/abc_se/enhanced/

 under "support issues" you will find a link to a page where you
 can pull this driver over, along with a readme.txt file which
 contains information on the driver as well as instructions on
 how to install it.  If you have difficulty obtaining the driver
 from this web page, you can find it under the directory in our
 public area:

   \\IMPRVZ\Release\Interim\NT_Driver


 Via file share or anonymous FTP from Windows NT server IMPRVZ:

   Connect to \\IMPRVZ\Release             IP: 16.121.144.36
               or
   FTP: username anonymous ; passwd guest
 
 

    Is this driver available from a public web site?
    
    Thanks,
    Todd