Figure 5–6: MC1 to MC2 Standard Hub Rolling Upgrade: Replace Third
System Memory Channel Adapters
AlphaServer
Member
System 1
MC2
MC1
AlphaServer
Member
System 2
MC2
MC1
MC2 Hub
# 1
MC1 Hub
# 2
AlphaServer
Member
System 3
MC2
MC2
MC2 Hub
# 2
opto
only
0/opto
1/opto
1/opto
ZK-1525U-AI
5–24 Setting Up the Memory Channel Cluster Interconnect