Chapter 2 Setting Up XSCF 2-97
Note – (1) DR: Abbreviation for Dynamic Reconfiguration. This function
dynamically adds a system board to a domain or deletes it from a domain. For
details on DR, see the Dynamic Reconfiguration User’s Guide.
Note – (2) Specified or displayed by the DCL. When the system board uses kernel or
I/O, for details of the DR operation and notation, see the Dynamic Reconfiguration
User’s Guide.
Note – (3) Although a CMU with two CPUMs can be configured into Quad-XSB
mode on an M8000/M9000 server, be aware of the following points:
- Only an XSB with at least one valid CPUM and memory can be configured
into a domain.
- Memory within an XSB that does not have a CPUM becomes unavailable.
The result is loss of access to half the installed memory on the CMU.
- You can add DIMMs to a CMU, but you cannot reconfigure memory resident on a
CMU to the valid XSBs to prevent that memory from becoming unavailable.
- The server generates a "configuration error" message for those XSBs that do not
have a CPUM and memory.
For details of components such as CPU/Memory Board unit, I/O unit, and
Motherboard unit, see the Service Manual for your server.
TABLE 2-20 lists the number of domains and XSBs for each system.
TABLE 2-20 Number of Domains and XSBs for Each System (1 of 2)
System
Range of Domain
ID
Maximum Number of
XSBs Memory Mirror (Note)
Entry-level systems The system containing
1 CPU chip.
(M3000 server)
0 1 Not available
Midrange systems The system containing
up to 4 CPU chips.
(M4000 server)
0 - 1 4 (1 x 4) Enabled for both
Uni-XSBs and
Quad-XSBs
The system containing
up to 8 CPU chips.
(M5000 server)
0-3 8(2x4)
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