Sun Microsystems 2500 manual Array Configuration Naming Convention

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 2-17Expansion Ports on an Expansion Tray

1 2 1 2

1. SAS Expansion In Port 2.SAS Expansion Out Port

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).

TABLE 2-1Controller and Expansion Tray Configurations

Configuration		Number of Expansion
Identifier	Controller Tray	Trays
1x1	1	0
1x2	1	1
1x3	1	2

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.

Chapter 2 Installing Trays 43