Installation 31
Configure the disk array devices in MPE/iX
Use either the SYSGEN utility program or the IOCONFIG utility command
to perform I/O configuration of the new XP disk array devices for the
MPE/iX OS.
The SYSGEN utility allows you to prepare a new I/O configuration for the
system, but the new configuration does not take effect until the system is
rebooted.
The IOCONFIG command prepares a new I/O configuration and puts it
into effect immediately, while the system is up, without a reboot.
Both configuration utilities execute in the normal MPE/iX system
environment while the system is up and running. Therefore you must boot
and start the OS from the MPE/iX Ldev 1 boot disk before you can perform
configuration.
For a pre-existing system to which new XP disk array devices are being
added, you will already have an operable system on an existing Ldev 1 boot
disk that you can start up. For a newly installed system, boot the system
from the primary boot path just used to install the system, and start the OS
using the appropriate factory configuration group, as described in the
System Software Maintenance Manual.
Regardless of which configuration utility you choose, you must determine
the system I/O paths of the XP disk array devices’ internal LUNs in order to
add those devices to the system I/O configuration.
The procedure to determine the I/O paths depends on the I/O interface
attachment method for your system:
• Native Fibre Channel (A-Class and N-Class systems running
MPE/iX 7.5)
OR
• SCSI-FC Fabric Router (available for all systems).
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