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Chapter 2 Installing Trays 43
Note – Perform all SAS connections from an Out (down arrow) port to an In (up
arrow) port. If the cable is connected to two connectors with the same arrows,
communication between the two drive modules will be lost.
FIGURE 2-17 Expansion Ports on an Expansion Tray
Array Configuration Naming Convention
The configuration naming convention is “controllers x trays” where the first number
is the controller tray and the second is the sum of the controller tray and the number
of expansion trays. For example, 1x1 is a standalone controller tray, 1x2 is the
controller tray and one expansion tray, 1x is the controller tray and 2expansion trays
(
TABLE 2-1).
Note – Do not add more expansion trays than the array supports.
Use the following instructions to connect the dual-RAID controller tray to one or
more expansion trays.
TABLE 2-1 Controller and Expansion Tray Configurations
Configuration
Identifier Controller Tray
Number of Expansion
Trays
1x1 1 0
1x2 1 1
1x3 1 2
1. SAS Expansion In Port
2.SAS Expansion Out Port
1
2
2
22
2
2
22
1