User Manual

Dell
PowerEdge R610 Technical Guide 31
7.8 Memory Scrubbing
The R610 memory interface supports memory demand and patrol scrubbing, single-bit correction and
multi-bit error detection. Correction of a x4 or x8 device failure is also possible with SDDC in the
Advanced ECC mode. Additionally, correction of a x4 device failure is possible in the Memory
Optimized mode.
7.9 Advanced ECC (Lockstep) Mode
In this configuration, the two channels closest to the processor are combined to form one 128-bit
channel. This mode supports Single Device Data Correction (SDDC) for both x4- and x8-based memory
modules. Memory modules must be identical in size, speed and technology in corresponding slots.
7.10 Optimizer (Independent Channel) Mode
In Optimizer (Independent Channel) mode, all three channels are populated with identical memory
modules. This mode permits a larger total memory capacity but does not support SDDC with x8-based
memory modules.
A minimal single-channel configuration of 1 GB memory modules per processor is also supported in
this mode.
7.11 Supported Configurations
See the System Memory section in the Installing System Components chapter in the Dell PowerEdge
R610 Systems Hardware Owner's Manual on Support.dell.com
.