Product manual

Galaxy G3G12 / G3G16 Installation and Hardware Reference Manual
96 Section 4 Maintenance with GAM
4.10 Managing SAS Connections
This feature pertains to Galaxy3G Serial Attached SCSI models. Functions include:
• Viewing SAS Port Information
• Making SAS Port Settings
• Viewing SAS Port Statistics
• Viewing SAS Initiators
Viewing SAS Port Information
A SAS Controller can have one or two SAS channels. Each SAS channel has two ports:
• Host In or Data Port (a table-routed port)
• Host In/Out or Data Cascade Port (a subtractive-routed port)
See “Serial Attached SCSI” for information about how these ports are physically connected to the Host PC
or other subsystems.
To view information about the SAS ports:
1. Click the Subsystem
icon in Tree View.
2. Click the Administrative Tools
icon.
3. Click the SAS Management
icon.
The port information appears the screen.
• Channel ID
• Port Type
• Link Status
• Link Speed
• SAS Address
• Cable Signal Strength – Adjustable under Port Settings
See “Serial Attached SCSI” in chapter 1 for information about how these ports are physically connected to
the Host PC or other subsystems.
Making SAS Port Settings
A SAS Controller can have one or two SAS channels. Each SAS channel has two ports:
• Host In or Data Port (a table-routed port)
• Host In/Out or Data Cascade Port (a subtractive-routed port)
To make settings to the SAS ports:
1. Click the Subsystem icon in Tree View.
2. Click the Administrative Tools
icon.
3. Click the SAS Management
icon.
4. In Management View, click the Port 1 or Port 2 link.
5. From the Cable Signal Strength dropdown menu, choose a value.
The range is 1 to 8. 1 is the default. Signal strength correlates to cable length in meters. Example: If you
have a 2 m SAS cable, set signal strength to 2. If performance is unsatisfactory (see
Viewing S), try
settings of 1 and 3, then use the best setting for your system.
6. Click the Submit button.