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Conference smurf::ase

Title:	ase

Moderator:	SMURF::GROSSO

Created:	Thu Jul 29 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2114
Total number of notes:	7347

1901.0. "dual-SCSI host access to shared storage" by XFMV01::AJITK () Wed Feb 26 1997 09:57

Hi 

We are in a competitive situation for a large clusterd
servers requirement (fifteen 2 node clusters). 

One of the features required is a multi-SCSI controller 
(dual) access from each host to the shared storage. The
shared storage has to be on dual-redundant RAID 
controllers.

As per my knowledge of DECsafe ASE, we dont support this
feature currently.

My question is which competitors (specifically SUN, HP) can 
provide this feature and where can I find more information. 

Thanks in advance. 

Ajit Kale

T.R	Title	User	Personal Name	Date	Lines
1901.1		USCTR1::ASCHER	Dave Ascher	`Wed Feb 26 1997 10:15`	18
	One of the features required is a multi-SCSI controller (dual) access from each host to the shared storage. The shared storage has to be on dual-redundant RAID controllers. As per my knowledge of DECsafe ASE, we dont support this feature currently. My question is which competitors (specifically SUN, HP) can provide this feature and where can I find more information. I think you are describing what HP calls "dual path access" or something like that. I don't know who else has it but they do. d
1901.2	We call it MUNSA ...	VIRGIN::SUTTER	Who are you ??? - I'm BATMAN !!!	`Wed Feb 26 1997 13:22`	9
	I think you mean the ability to talk directly to the SCSI Disk from ALL cluster members (much similar to VMS SCSI Clusters). We decided to do this via MC only but this may change in the future (See also note 1661.* in here). Regards, Arnold
1901.3	dual-rail SCSI	TROOA::MSCHNEIDER	[email protected]	`Wed Feb 26 1997 20:07`	6
	I think what he is asking for is dual-rail SCSI where you would have redundant HSZxx controllers attached to TWO different SCSI adapters. UNIX will support this in the Steel release later this year and I would expect ASE to support this following general UNIX support. Don't know what the competition can do....
1901.4	requirement is as per .3	XFMV01::AJITK		`Thu Feb 27 1997 01:03`	3
	yes... the requirement is as described in .3 Ajit
1901.5		USCTR1::ASCHER	Dave Ascher	`Thu Feb 27 1997 10:01`	9
	<<< Note 1901.4 by XFMV01::AJITK >>> -< requirement is as per .3 >- yes... the requirement is as described in .3 Ajit .... and HP has it.