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Installation
PMB Cards
PMB Cards
99x/T-Class Systems are preconfigured at the factory and shipped with all cards that have
been ordered as part of the system. None of the cards have any jumpers or switches to set.
This section describes the location of the cards in the Processor Main Bus (PMB) card cage.
(See Figure 3-6, Figure 3-8, and Figure 3-9). Use this information to verify that PMB cards
have been correctly installed in the system.
Processor Cards
The loading sequence of processor cards into the PMB card cage depends on the system
with which you are working.
990/992/890, 991/995/T500, and 996/T520 Only
Processors must be installed according to the following rules:
1. PMB card slot 15 is reserved for the first processor card.
2. Use the following sequence for installing additional processor cards: PMB slots 14, 13,
12, 11, 10, 9, 8.
If a processor card is installed in slots 8 through 11, an additional +5V 130A (650W) power
supply (PN 0950-2229) should be installed in slot P1.
CAUTION
Do not handle the processor card or daughterboard by the cooling
vanes. Applying pressure to these vanes may cause the ceramic to
crack.
997/T600 Only
Processors must be installed in the following sequence: PMB slots 15, 14, 13, 11, 10, and 9.
NOTE
Multiprocessor systems have special power requirements. For more
information, refer to "Verifying Installation of Power Modules".
Configuration Limits for Systems with 4+ CPUs
If more than 4 CPUs are configured on a system, the number of memory and BC cards
must be reduced due to PMB slot and arbitration line limitations. Refer to Table 3-2 for
configuration combinations.
The table shows the maximum number of CPUs that can be configured in the system
cabinet for a given number of memory cards and BC cards. (The term BC Card in column 1
refers to BC cards on 990/992/890, 991/995/T500, and 996/T520 Systems, and to HP-HSC
I/O Bus Converters on 997/T600 Systems.)
NOTE
As of the publication date of this manual, the 990/992/991/995/996/997
Systems support a maximum of 8 CPUs. .
3-12
Chapter 3
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