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Chapter 1: Introduction
Figure 1-6. Logical Drive Locations
Top (Secondary) Node
Bottom (Primary) Node
Looking down on a pulled-out drawer, the drive bays in the first row from left to right are
identified as 0 to 14. Drive bays 15 to 29 comprise the second row. An expander module in
the second row connects drive bays 0 to 29 to the server nodes.
Drive bays 30 to 44 comprise the third row, while drive bays 45 to 59 comprise the fourth
row. Another expander module in the fourth row connects drive bays 30 to 59 to the server
nodes (see figure below).
The primary node accesses all 60 drive bays via the 2nd and 4th row expanders.
The secondary node accesses all 60 drive bays via the 1st and 3rd row expanders.
Drives 0-14
Drives 15-29
Drives 30-44
Drives 45-59
Front of Chassis
