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Chapter 1 Before You Begin 13
Hardware Components and LEDs
This section describes the main hardware components of your storage system
enclosures.
Controller Components and LEDs
The controller enclosure can be connected through switches to Ethernet adapters
(NICs) or host iSCSI ports. Table 1-1 describes the enclosure components.
Table 1-1 Controller Enclosure Components
Description Quantity
iSCSI controller (I/O) module 1 or 2
1
1 Air-management system drive blanks or I/O blanks must fill empty slots to maintain optimum airflow through the chassis.
SAS or SATA drive module 2–12 per enclosure
AC power-and-cooling module 2 per enclosure
1-Gbps Ethernet host port 2 per controller module
3-Gbps, 4-lane SAS expansion port 1 per controller module
Ethernet port (RJ-45) 1 per controller module
CLI port (RS-232 micro-DB9) 1 per controller module
Service port (RS-232 3.5-mm jack) 1 per controller module