IBM x3455 - System - 7984 User Manual page 58

v The server supports 512 MB (type x8) DIMMs and the following sizes of type x4
v The server supports online-spare memory. For additional information, see "What
v The server does not support memory mirroring.
v When you restart the server after you add or remove DIMMs, the server displays
v The amount of usable memory will be reduced, depending on the system
44
System x3455 Types 7984 and 7986: User's Guide
Table 2. DIMM installation sequence
DIMM connector population
Number of DIMMs with one microprocessor
installed
2
4
6
8
10
12
DIMMs: 1 GB, 2 GB, and 4 GB. The memory can be expanded to a maximum of
48 GB, using twelve 4 GB DIMMs. For a list of memory modules that the server
supports, see the ServerProven
serverproven/compat/us/.
The memory controller also provides Chipkill memory protection if all DIMMs are
of the type x4. Chipkill memory protection is a technology that protects the
system from a single chip failure on a DIMM.
Note: Chipkill memory protection is not supported on 512 MB DIMMs.
your server offers" on page 4.
a message indicating that the memory configuration has changed.
configuration. A certain amount of memory must be reserved for system
resources. To view the total amount of installed memory and the amount of
configured memory, run the Configuration/Setup Utility program and select
System Summary from the menu. For additional information, see Chapter 3,
"Configuring the server," on page 57.
installed
1, 2
1, 2, 3, 4
1, 2, 3, 4, 5, 6
Not supported
Not supported
Not supported 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
®
list at http://www.ibm.com/servers/eserver/
DIMM connector population
with two microprocessors
installed
1, 2
1, 2, 7, 8
1, 2, 3, 4, 7, 8
1, 2, 3, 4, 7, 8, 9, 10
1, 2, 3, 4, 5, 6, 7, 8, 9, 10