Sas Devices; Figure 1.5 Sas Devices - Fujitsu MAU3147RC SERIES Technical Manual

Serial Attached SCSI (SAS) Interface

1.1.4 SAS devices

A SAS device contains one or more SAS ports, each containing one or more phys
(i.e., a SAS port may be a narrow port or a wide port).
Each single HDD unit is a separate SAS device. Usually, it is a single port or
dual port device, but does not use a wide port.
Figure 1.5 shows examples of SAS devices with different port and phy
configurations.
SAS Device
Wide port
Phy
Phy
Wide port
Phy
Phy
1-6

Figure 1.5 SAS devices

SAS Device
Wide port
Phy
Phy
SAS Device
Narrow port
Phy
Narrow port
Phy
C141-C009