Operation Modes; Removing Memory Modules; Preliminary Steps - Fujitsu PRIMERGY TX140 S2 Upgrade And Maintenance Manual

10.1.2 Operation modes

– The maximum performance can be achieved in a symmetric dual-channel
configuration. Therefore both channels have to be populated with the same
amount of memory. The DRAM device technology (1 Gbit / 2 Gbit / 4 Gbit)
may vary from one channel to the other.
– If the amount of memory differs between the two channels, the system board
will run in dual-channel asymmetric mode.
– Regardless of the mode, all DIMMs will run at the highest common
frequency that is allowed by the SPD Data of the DIMMs and the maximum
speed of the selected configuration.
– Single-channel mode is used if one memory module is populated in
DIMM 1A.
10.2

Removing memory modules

Upgrade and Repair Unit
(URU)
Tools: tool-less

10.2.1 Preliminary steps

"Disabling BitLocker functionality" on page 69
Ê
"Disabling SVOM boot watchdog functionality" on page 70
Ê
"Shutting down the server" on page 46
Ê
"Disconnecting the server from the mains" on page 46
Ê
"Getting access to the component" on page 47
Ê
"Removing the fan module" on page 151
Ê
TX140 S2
Upgrade and Maintenance Manual
Main memory
Hardware: 5 minutes
211