Changing SCSI ID on RX2600

I have 2 x HP RX2600's Itanium with two HDD in each.  I also have 2 x HP2100's with one HDD in each.  I'm trying to configure the SCSI controller ID's but cannot seem to access the BCH ( Boot Console Handler )

The command has a number of uses including

Displaying and setting the SCSI TRANSFER RATES
Displaying and setting the SCSI CONTROLLER INITIATOR id'S

I simply cannot find how I access this bch menu?

I'm actually looking for the commands to do this please?

Regs

ANAMOPS
anamopsAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

anamopsAuthor Commented:
Also........

It appears this is done through the EFI on an Itanium Machine.  Whats the exact command for this please?

Regs

ANAMOPS
0
gheistCommented:
Controller usually sit at SCSI ID 7
Why you would change it ???
"Differential" SCSI may need it ( i.e. A SCSI wire with two controllers attached )

Controller must be "released" before doing so, i.e. detached from boot disks, so this is impossible with boot controller.
I doubt boot firmware will boot form altered adaptor....

not sure about EFI, but normal RISC machines from HP allows only to (re)scan for devices on PCI and SCSI bus
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
gheistCommented:
ID 7 is historical, as it was highest ID in SCSI-1, SCSI-2 added more ID-s, up to 15, but controller remained at same place to be compatible with not-so-well written drivers. Changing scsi id-s is not a good idea, for example all SUN machines prefer to boot from scsi disk at ID 1 or cd-rom at ID 3, or common PC BIOS, which boots from disk #80 or first CD-ROM by default, if you change these rules you are alone in the darkness with your custom setup, especially, when there is no gain in changing SCSI ID-s ( for performance you can spread disks along SCSI busses, if you have many, but still do not expect booting from next bussess, even if you are told it works sometimes)
SCSI bus shares its bandwidth in time bursts, for example when you attach 5MBps disk to 40MBps bus, it takes all 40MBps of bus to operate at its 5MBps, so move slow devices out of high performance wires (or use drivers/software that schedules nicely)
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Unix OS

From novice to tech pro — start learning today.