User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

Example 4-3 Cell Partition Output
Configuration Problems
Configuration problems are often related to an improper configuration. This section provides a
brief summary of nPartition configuration methods and tools. Refer to the HP System Partitions
Guide for detailed information on this topic.
HP nPartition-capable servers enable you to configure a single server complex as one large system
or as multiple smaller systems. Each nPartition defines a subset of the server hardware resources
to function as an independent system environment. An nPartition includes the following features:
• One or more cells (containing processors and memory) that are assigned to the nPartition,
and all I/O chassis connected to those cells.
• Processors, memory, and I/O in an nPartition for exclusive use by software running in the
nPartition.
• A dedicated system boot interface.
• Each nPartition boots and reboots independently.
• Hardware and software isolation, so that hardware or software faults in one nPartition do
not affect other nPartitions within the same server complex.
You can reconfigure nPartition definitions for a server without physically modifying the server
hardware configuration by using the HP software-based nPartition management tools.
Basic partition creation gudelines:
• Build the largest partition first.
• Keep memory amounts on each cell in a partition as equal as possible.
• For optimum performance, add cells to partitions in multiples of two (1, 2, 4, and so on).
Power Subsystem Failures
Use the following power-on sequence summary to aid in locating power failures:
1. AC power cord is plugged in.2. HKP power is applied, utilities initialized and complex
configuration checking performed.3. Power switch is on and cabinet is supplied with 48 V
power.4. Main system backplane comes up first and supplies clocks to cells and I/O backplanes.
5. I/O backplanes are powered on (0-1).6. Cell boards are powered on (0-3).7. Cells are querried
for valid complex profiles and wait for SM_GOOD to be set by PDC. Cells must be powered on
with 48 V in addition to HKP. When one valid cell is located, a timer starts and any cell boards
not ready when the time limit expires will not be initialized. 8. Early CPU_INIT and
Cell_Monarch_Selection9. Cell_Initialization10. PD_Rendezvous and Core_Cell_Selection11.
PD_Initialization12. IPL_Launch
88 Troubleshooting