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Conference wrksys::alphastation

Title:	Alpha Workstation Conference
Notice:	See note 1.* for conference notices
Moderator:	WRKSYS::HOUSE

Created:	Wed Sep 07 1994
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1996
Total number of notes:	9122

1958.0. "Differences between >>>INITIALIZE and >>>BOOT_RESET ON ?" by PRSSOS::FONDI () Wed May 07 1997 09:40

	Hello


  I am facing the following problem, very often boot hangs from an
  alphastation 255 or Alphaserver 300.
  the display at the console is something like (customer has no trace)
     can't access device 
  or hang after the VMS banner is displayed
 
  workaround:  >>>INIT or power off/on the 255 or 300 then >>>BOOT

 

let me explain this customer has two "identical" scsi cluster
 cluster #1
   ASV4100---KZPSA----HSZ40 (V30Z)----KZPSA----AS255/233 
                     system disk

 cluster #2
   ASV4100---KZPSA----HSZ40 (V27Z)----KZPSA----ASV300 4/266
                     system disk


 VMS V6.2-1H3 
 patches installed ALPSCSI02_070  ALPLAN04_6.2 
 variable BOOT_RESET ON                               
 srm console  V6.3-4 for AS255/233
 srm console  V6.2-165 for ASV300 4/266



 Note:
 On the ASV 4100s we don't have problem when BOOT_RESET is ON , but
 if we set BOOT_RESET off we get the same problem to boot the ASV4100s.


 Questions:
 1)Is this a firmware problem (BOOT_RESET seems not working correctly) ?
   Does the KZPSA enought time to init ? 

 2)apart from tests, What is the difference beetween
   >>>INITIALIZE     and    >>>BOOT_RESET ON 


	Thank you for your help

       Henri

T.R Title User Personal
Name Date Lines

1958.1 used for multi-host SCSI WRKSYS::SCHUMANN Fri May 09 1997 21:33 7

T.R	Title	User	Personal Name	Date	Lines
1958.1	used for multi-host SCSI	WRKSYS::SCHUMANN		`Fri May 09 1997 21:33`	7
	When BOOT_RESET is OFF, the SCSI bus is not reset during a power-up sequence. This is so that a rebooting SCSI cluster node does not inadvertently trash a SCSI bus that is in use by the other host. If there is only one host on the SCSI bus, BOOT_RESET should be ON. --RS

When BOOT_RESET is OFF, the SCSI bus is not reset during a power-up sequence.
This is so that a rebooting SCSI cluster node does not inadvertently trash
a SCSI bus that is in use by the other host.

If there is only one host on the SCSI bus, BOOT_RESET should be ON.

--RS