Dot Hill Systems II 200 FC Manuale Utente

Chapter 4 Connecting Your Array

Figure 4-13 Dedicated Drive Channels 2 and 3 (on Both Controllers) in a Dual-Controller SANnet 

II 200 SATA Array 

4.8.2

Host Port Connectivity in a Dual-Controller Array

Host channels connect to host computers either directly or through storage switches or 
other devices. In a default dual-controller RAID configuration, each controller has four 
host channels, channels 0, 1, 4, and 5. Port bypass circuits connect each pair of host 
SFP ports on a host channel; as a result, each host channel accesses both controllers. 

The main differences between the SANnet II 200 FC, SATA, and SATA SE arrays are 
the number of host ports and the supported speed for each port (see Table 4-6). 

 

4.8.2.1

SANnet II 200 FC Array

In a default dual-controller RAID configuration, each controller has four host ports. 
Each port connects to one host channel, channels 0, 1, 4, and 5 (see Figure 4-14). All 
four host channels support 1-Gbit or 2-Gbit data transfer speeds. Each host channel has 
un upper port and a lower port.

Table 4-6  Number of Host Ports and Supported Host Port Speeds

1 Gbit or 2-Gbit 

Maximum of 4 host ports per 
I/O controller module 

Maximum of 4 host ports (FC 0 and FC 1) 
per I/O controller module 

2 Gbit only 

N/A

Maximum of 2 host ports (FC 4 and FC 5) 
per I/O controller module 

Two drive ports on channel 2

Two drive ports on channel 3

An upper port and a lower port are on each drive channel.