IBM RS/6000 7025 Model F80 Server 17
Processor and Memory Boot Time Deconfiguration
As described previously, processors can be dynamically deconfigured by the
system. It is also possible to deconfigure processors and also memory with
menus of the service processor for benchmarking reasons. For further
information, refer to the
RS/6000 Enterprise Server Model F80 Service Guide
,
SA38-0568.
Fast Boot
This feature, set as the default, allows you to select the IPL type, mode, and
speed for your boot capabilities using service processor menus. Selecting fast
boot results in several diagnostic tests being skipped and a shorter memory test
being run; therefore, the startup process is faster, but possible problems might
not be discovered at startup.
Service Processor Restart
The service processor design for the Model F80 includes the ability to reset the
service processor. This enables the system firmware to force a hard reset of the
service processor if it detects a loss of communication. Since this would typically
occur while the system is already up and running, the service processor reset will
be accomplished without impacting system operation.
Boot to SMS Menu
The Boot Mode menu allows to select among other things to boot to SMS menu.
This function provides booting into SMS menu without pressing a key. This
function is useful, because it is not necessary to wait in front of the system and
press the F1 (graphic display) or 1 (ASCII terminal) at the right moment.
System Upgrades
For owners of a 7025-F50, it is possible to upgrade to a Model F80 while keeping
the original serial number.
Model F50 systems converted to Model F80 systems will require replacement of
all system processors. The first Model F50 processor card can be replaced with
one Model F80 2-way or greater processor card via feature conversion. This
processor conversion is available at the time of initial model upgrade only. A
maximum of one F50 processor card may be converted to one F80 processor
card for each system being converted. The existing Model F50 processor being
replaced is returned to IBM.
Memory DIMMs from the F50 can move to the Model F80. Keep in mind, if the
DIMMs will be installed on the memory cards, that they have to be installed in
quads. Therefore it might be necessary to order two additional DIMMs to
complete the quad.
Most of the adapters can also move from Model F50 to Model F80. Concerning
the graphics accelerators, only a GXT120P or GXT130P is supported in Model
If the memory is to be temporary deconfigured (for benchmarking or sizing, for
example), it is also possible to use the AIX
rmss
command to simulate a
specific amount of memory (only below the real memory limit).
Note
