Configuring Memory For Optimum Performance - HP 3000/9x9KS Series Upgrade Manual

HP 3000/9x9KS and HP 9000/K2x0/K4x0/Kx70/Kx80 Memory Upgrade Installation
Installation Procedure (HP 3000/9x9KS and HP 9000/K2x0/K4x0/Kx70/Kx80)
256MB SIMM + 256MB SIMM
128MB SIMM + 128MB SIMM
64MB SIMM + 64MB SIMM
32MB SIMM + 32MB SIMM
16MB SIMM + 16MB SIMM
A set of 2 same-size SIMMs
A set of 4 same-size SIMMs
a. See "OS Requirements and Diagnostic Support for 64MB, 256MB,
and 512MB Modules" on page A-1.

Configuring Memory for Optimum Performance

For OPTIMUM memory performance, memory must be installed in a particular slot sequence. This
section provides an overview and then detailed procedures for both single- and dual-extender systems.
If your memory is not configured for optimum performance, the warning, Memory not optimized for
performance, appears when you boot the system. Your memory will still work, but your system's
performance may be degraded.
On HP3000/979KS and HP9000/K250/K260/K450/K460/Kx70/Kx80 systems, non-optimized memory
has another impact. The firmware includes a new user-configurable flag called auto start. If the flag is set
to OFF, the selftest will detect the performance degradation when you boot and will inhibit autoboot and
autosearch. If you're not sure whether a warning was displayed (i.e., warnings may have scrolled off
your console), you can re-display any warning messages. From the Information menu in the user
interface, use the warn command to see any warning messages that came up during the boot.
If you get the warning, Memory not optimized, use the me command in the Information Menu of the user
interface (the Boot Console Handler) to check your memory configuration. This command will not
directly tell you whether your memory is installed for optimum performance; it will only tell you
whether the modules are seated correctly and recognized as part of your system configuration. However,
you can review the sequence of memory modules in the memory extenders. The most important memory
optimization rule is that all module pairs of each memory size should be installed in lower-numbered
slots before any modules pairs (see the procedures and examples on pages 1-13 through 1-20). If the
display of your memory configuration shows any single modules installed before module pairs , you will
need to reconfigure your memory using those procedures.
If the warning Memory not optimized does not appear, your memory is at optimum configuration.
Chapter 1
= one 512MB module
a
= one 256MB module
= one 128MB module
= a
one 64MB module
= one 32MB module
= 1 module
= 1 pair of modules
1-13