User`s manual

27MAXDATA PLATINUM 5220 Server
For memory on-line sparing, one DIMM per channel is used as the memory spare. If a DIMM begins
to fail, the content of the failing DIMM is copied to the spare DIMM in that channel. When all of the
data is copied to the spare DIMM, the primary DIMM is removed from service and the spare DIMM
takes its place.
When memory on-line sparing is used, the spare DIMMs must be equal to or larger than the largest
in-service DIMM in that channel.
a
Figure 17. Six DIMM Memory Mirroring
a
Figure 18. Eight DIMM Memory Mirroring
empty
mirror
primary/
mirror
primary
mirror
primary
mirror
primary