This procedure explains how to find the status of the SAS
connections between canisters in different enclosures.
Ensure that the
system machine code is active on the node before you begin this procedure. To
determine whether the machine code is active, check the system status LEDs.
Determine the state of the SAS ports by using one
of the following methods:
- Go to in the management GUI. Use the
dynamic image to display the enclosure. Right-click the enclosure and select to check the status of the SAS port of each canister.
A port with offline status indicates that its link is not connected.
- It is normal for port 2 of the canisters in the expansion enclosure at the end of a SAS chain to
be offline.
- If SAS expansion
ports are not connected to any expansions, it is normal for the SAS expansion ports to go
offline.
Attention: The system can identify some SAS cabling errors and log an event to alert you
to the error. Go to the page of the management GUI and identify alerts that concern hardware errors and SAS
cabling errors. Run fix procedures in the recommended order.
- Examine the LEDs of the SAS ports.
- If the link LED is off, the link is not connected.
- If the fault LED is on, the link is partially operational, with reduced performance.
Consider the state of any other link between the two enclosures before you service this link.
- If a link is not connected, complete the following actions. Check the link status each time
until it is corrected or connected:
- Ensure that both ends of each SAS cable are correctly inserted into their correct ports.
- Replace the SAS cable.
- Replace the expansion canister at one end of the connection.
- Replace the canister at the other end of the connection.