Usage: sas_disk_blink [-h] [-s <n>] [-v] <sas_device>
  where:
    -h, --help           print usage message
    -s <n>, --set <n>    where <n> is:
                           0  - set RLM to 0
                           1  - set RLM to 1
                           >1 - blink LED for <n> seconds
                                (default: blink for 30 seconds)
    -v, --verbose        more verbose output

Use Ready LED Meaning (RLM) mode page field to blink SAS device LED