User Manual

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Vess R2000 Series Product Manual Promise Technologies
Faulty Cable
To check for a faulty SAS cable:
1. Power down the RAID subsystem and JBOD units.
2. Replace the SAS cable with a new one.
3. Power up the subsystems and monitor the link port counter for changes in the rate of link error
accumulation.
Faulty Controller or I/O Module Connector
To check for a bad controller or I/O module SAS connector:
1. With the subsystems online and I/Os running, access the CLI via serial or Telnet.
See “Initial Connection” on page 206.
2. At the command prompt, type the following command and press Enter.
administrator@cli> sasdiag -a errorlog -l expander -e 1 -i 1
3. At the command prompt, type the following command and press Enter.
administrator@cli> sasdiag -a errorlog -l c2cport
By interpreting the two error logs, you can verify which controller or I/O module SAS port is accumulating link
errors.