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Conference wrksys::mikasa

Title:	AlphaServer 1000 (aka Mikasa)

Moderator:	WRKSYS::HESCHG

Created:	Mon Nov 14 1994
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	917
Total number of notes:	3293

903.0. "The order multiple SCSI controllers show in VMS." by KERNEL::TOYNTONA () Fri May 16 1997 12:48

    I have a user with a Alphaserver 1000A which has 3 KZPAA SCSI
    controllers fitted. He would like to know how VMS probes the buses to
    allocate channel letters to his SCSI controllers. He is running VMS
    6.2. The system is new so should be running the latest versions of
    code.
    
    His particular interests are:-
    
    What is the priority order for the primary PCI slots, secondary PCI
    slots, EISA/ISA slots and onboard SCSI controller.
    
    Is there any way of telling the system the order in which you want the  
    SCSI channels lettered. In this case he wants the internal controller
    to be PKA and the KZPAAs to be PKB/C/D.
    
    						All the best
    
    						Andy Toynton

T.R	Title	User	Date	Lines
903.1	See the release notes	WRKSYS::ERB	`Fri May 16 1997 15:56`	3
	This is all explained in the release notes that come with VMS. -Stu-
903.2	Thanks Stu but as always I want more.	KERNEL::TOYNTONA	`Mon May 19 1997 13:15`	14
	Re -1 I have checked the release notes and all it says is that the built in SCSI controller will be bumped to the last letter i.e. PKC if 2 additional controllers are added. What I wanted to know is if you had say 1 SCSI controller in primary PCI slot, 1 SCSI controller in a secondary PCI slot and 1 SCSI controller in an EISA slot which would be PKA PKB and PKC, obviously the built in would be PKD. Also if you have 2 SCSI controllers in primary PCI slots which gets the lower letter the one with the highest or lowest slot number. All the best Andy Toynton
903.3	for example..	WRKSYS::LAU	`Tue May 20 1997 13:29`	14
	The numbering/order of SCSI controllers (the on-board is always pka) is shown in the following example. Assuming you have controlloers in both primary and secondary slots. pci-11 kzpaa pkd pci-12 kzpba pke pci-13 ---- pci-1 kzpaa pkb pci-2 de500 pci-3 kzpba pkc Paul
903.4	Re -1 Close but no coconut.	KERNEL::TOYNTONA	`Thu May 29 1997 12:12`	13
	Re -1 This is obviously wrong as VMS always pushes the built in controller to the last letter ie PKC with 2 additional SCSI controllers installed. On that basis is the rest of the information correct or does VMS letter the SCSI channels starting with the highest PCI slot numbers and where do EISA and ISA controllers fit in lower or higher lettered than the PCI slots All the best Andy Toynton.