Single I/O module configurations can be used with a supported RAID adapter or HBA. In this topology,
each port on the adapter is connected to a separate chain of single I/O expansion enclosures, as illustrated
in the following figure.
Figure 5. Single I/O module connectivity topology
Dual I/O module configurations can be used with 2-port RAID adapters for high availability and
performance. In this topology, each port on the RAID adapter is connected to a different I/O module chain
within the same chain of dual I/O enclosures.
Dual I/O connectivity topology without enclosure redundancy is shown in the following figure.
Figure 6. Dual I/O connectivity topology without enclosure redundancy
Lenovo Storage E1012 and E1024 Disk Expansion Enclosures
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