Dot Hill Systems II 200 FC service manual Drive Port Connectivity in a Dual-Controller Array

labeled FC0, FC1, FC4, and FC5 to indicate channels 0, 1, 4, and 5. Default configurations do not include an SFP connector in every SFP port. To add or change SFP connectors, see to “Changing Your SFP Configuration” on page 4-24.

The channels and associated ports for the SANnet II 200 FC, SATA, and SATA SE arrays are summarized in Table 4-5.

Table 4-5Number of Ports in SANnet II 200 FC, SATA, and SATA SE Arrays

	SANnet II 200 FC	SANnet II 200 SATA		SANnet II 200 SATA SE
Item	Array	Array		Array
Total number of	6	8		6
ports
Channel 0	1 FC0 host or drive port;	2	FC0 dedicated host	2 FCO dedicated host ports
	default: host port	ports 3		*
Channel 1	1 FC1 host or drive port;	2	FC1 dedicated host	2 FC1 dedicated host ports
	default: host port	ports 3		*
Channel 2 1	1 FC2 dedicated drive	1	FC2 dedicated drive	None
	port	port
Channel 3 2	1 FC3 dedicated drive	1	FC3 dedicated drive	None
	port	port
Channel 4	1 FC4 host or drive port;	1	FC4 host or drive port;	1 FC4 host port
	default: host port	default: host port
Channel 5	1 FC5 host or drive port;	1	FC5 host or drive port;	1 FC5 host port
	default: host port	default: host port

1.Channel 2 drive ports connect to drive loop A ports on expansion units.

2.Channel 3 drive ports connect to drive loop B ports on expansion units.

3.Only one host port connection per channel is allowed when connecting to a fabric switch.

4.8.1Drive Port Connectivity in a Dual-Controller Array

Drive channels connect to the internal drives in the array and can also connect to drives in external expansion units. The key difference between the SANnet II 200 FC and SATA array drive channels is the assignment of two ports for each channel:

■The SANnet II 200 FC array has a drive channel assigned to two ports on each I/O controller module. Each drive channel is a pair of ports on a single I/O controller module. In a dual-controller configuration, the top controller has two ports for drive channel 2, and the lower I/O controller module has two ports for drive channel 3.

■The SANnet II 200 SATA array has a drive channel assigned to one port on each I/O controller module in a dual-controller configuration.

Chapter 4 Connecting Your Array 4-17