User`s manual

CBI-tOtO
Multi-Hosting Configuration
4-16 Setup
The following is a list of software requirements for multi-hosting:
• VMS version 5.3 or above
• VAX cluster software must be running on both systems with at least
one of the DEC's interconnects operational
• Tape drives can only be mounted to one system at a time
• Allocation classes must be the same for all systems when installing
disk drives (value
must not equal 0).
Refer to Appendix A for supported multi-hosting devices and follow the
instructions below for multi-hosting:
1 From the Additional Utilities Menu
in the On-Board Utility, follow these
instructions:
a Select option D to display current configuration.
b Answer Y to the statement:
CHANGE CONFIGURATION? (YIN) The
menu shown in Figure 4-4 will display.
c Select
R to toggle SCSI reset.
d Set the host adapter SCSI reset to OFF. Do this for all SCSI host
adapters to be multi-hosted.
e Answer Y to reconfigure the adapter.
f Select C to reconfigure the device.
9 Configure the CBI-IOIO to SCSI ID 7 for the first computer, and SCSI
ID 6 for the second computer.
h Configure the CBI-IOIO for exact number of disks and tapes. This
will inhibit scanning of other host adapters (see Figure 4-6).
If other MSCP disks are in the cluster, follow the rules in the
subsection
"Changing LUN Offset" in liOn-Board Utility" so that
each device
has a unique unit number.
NOTE In a multi-hosting system the physical disk device name
must be identical on both systems.