SAS port usage

Planning during the product placement phase includes considering the specific use of each SAS port.

SAS port usage in the SAN Volume Controller

Table 1 lists the supported functions of the individual ports on the SAN Volume Controller.

Table 1. SAS port usage
Node type	SAS ports (in numerical order)
SAN Volume Controller (CF8 and CG8)	Narrow port for direct-attached drives Narrow port for direct-attached drives Narrow port for direct-attached drives Narrow port for direct-attached drives
SAN Volume Controller (DH8)	Wide port for attachment to an expansion enclosure For future use Wide port for attachment to an expansion enclosure For future use

The lsportsas command displays two attributes for each SAS port:

Attachment: what currently is attached to the port (values: none/host/enclosure).
Type: what the port can be attached to (values: host/enclosure).