HP AA988A HP StorageWorks 2012sa Modular Smart Array user guide (488320-002, J - Page 20

Table 1-5 Controller LEDs (Back) (Continued) Location Controller module Controller module LED Ethernet activity Color State Description Green Off The Ethernet link has no I/O activity. Expansion port status Blink The Ethernet link has I/O activity. Green Off The port is empty or the link is down. On The port link is up and connected. Drive Enclosure Components and LEDs A drive enclosure can be connected to a controller enclosure or to another drive enclosure to provide additional disk storage capacity. Table 1-6 describes the drive enclosure components. Table 1-6 Drive Enclosure Components Description Quantity Expansion (I/O) module 1 or 21 SAS or SATA drive module 2-12 per enclosure AC power-and-cooling module 2 per enclosure 3-Gbps, 4-lane SAS In port 1 per expansion module 3-Gbps, 4-lane SAS Out port 1 per expansion module Service port (RS-232 micro-DB9) 1 per expansion module 1 Air-management system drive blanks or I/O blanks must fill empty slots to maintain optimum airflow through the chassis. 20 HP StorageWorks 2012sa Modular Smart Array user guide • May 2008