Bull NovaScale R460 E2, User Manual, Page: 340 / 490

9-44 Upgrading Your Server
LockStep Feature (x8 SDDC)
In LockStep feature, the DIMMs in two groups corresponding to two memory channels (channels 0 and 1) is multiplexed and
operated in parallel to enable x8 SDDC (x8 Single Device Data Correction). With this feature, a single device can detect and
correct one to eight-bit error.
IMPORTANT:
The LockStep feature uses channels 0 and 1. In LockStep configuration, the
memory channel 2 of each CPU (CPU1-DIMM3/6, CPU2-DIMM3/6) is disabled.
Memory controller
Memory controller