IMPORTANT: If you are adding an additional processor to your server blade, the DIMMs in the
server blade must be reconfigured to support both CPUs. For more information, see “DIMM pair
load order” (page 49).
DIMMs
DIMM installation guidelines
Observe the following guidelines when installing additional memory:
• In a BL860c i2 Server Blade, memory is loaded in pairs.
• In a BL870c i2 or BL890c i2 Server Blade, memory is loaded in quads that alternate between
blades.
• Only two DIMM sizes can be mixed in a BL870c i2 or BL890c i2 Server Blade.
In a BL870c i2 Server Blade, the two DIMM sizes must alternate between blades. Load
all of one DIMM size, then repeat with the second DIMM size.
◦
◦ In a BL890c i2 Server Blade, blades 1 and 2 must have one DIMM size and blades 3
and 4 must have the other DIMM size. If only one DIMM size is used on BL980 i2,
alternate between all 4 blades.
NOTE: HP Integrity Server Blade upgrades follow the same DIMM loading rules.
See“Upgrading a conjoined configuration” (page 66) for more information on server blade
upgrades.
DIMM pair load order
Table 6 DIMM pair load order
CPU1CPU0
——4A3A1st
CPU0 only
——10B9B2nd
——6C1C3rd
——12D7D4th
——5E2E5th
——11F8F6th
——4A3A1stBoth CPUs loaded
Installing internal components 49
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