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Hardware Considerations
v Determine the prerequisite engineering changes and program temporary fixes
(PTFs) that are needed to upgrade the system.
v Determine the attached input-output devices, and the operating system.
v Verify with the original equipment manufacturer vendor that any non-IBM
devices are compatible with the model upgrade and the new software release.
Note: The customer should request written confirmation of this compatibility
from the original equipment manufacturer vendor.
v The target system may have different power requirements than the source
system. Appropriate planning and preparation by the customer is very
important. Determine whether you need additional space and power
requirements for any additional system units or system racks. For more
information, see the AS/400 Technical Studio.
v Verify that the target system has a tape drive compatible with the tape format
used to save information on the source system.
v Ensure that your marketing representative or IBM business partner is aware of
the number of ports on your current twin-ax workstation controllers and the
number of ports you will need on your new model. This will help to ensure that
the proper model and features get ordered for your upgrade.
Installing from an Alternate Installation Device
Version 4 releases include support for alternate installation devices on buses other
than bus 1 (the system bus). If you use an alternate installation device, you need to
ensure that the device is set up and enabled. You also need to have the CD-ROM
for Licensed Internal Code as well as your tape media. The Appendix of the
Software Installation book describes the alternate installation device function and
identifies situations in which older tape devices may require its use. The appendix
also describes how to set up, enable, or disable an alternate installation device.
Note:
alternate IPL device
This may be a CD-ROM unit or tape unit, attached to the system
bus 1 (the system bus)
alternate installation device
Tape unit attached to a bus other than the system bus 1
Performing the IPL using the alternate installation method is really just a
special kind of IPL type D. Such an installation involves two pieces of
media: the alternate IPL load source (code), usually on a CD-ROM, and the
alternate installation media (currently must be a tape). The alternate IPL
load source is used to start the IPL type D. The alternate installation media
contains the Licensed Internal Code that will be installed on the system. The
alternate IPL load source will always be read through a device on bus 1 of
the system. The alternate installation media is placed in a device on any bus,
except bus 1.
System Configuration Considerations
v Change the auxiliary storage pool (ASP) configuration either before or after the
upgrade, but never during the upgrade.
v If you use mirroring, make sure to specify the correct level.
10 AS400e 940x RISC-to-RISC Road Map V4R5