ledctl
Intel(R) Enclosure LED Control Application.
TLDR
Turn on the "Locate" LED for specified device(s)
$ sudo ledctl locate=[/dev/sda,/dev/sdb,...]
Turn off the "Locate" LED for specified device(s)
$ sudo ledctl locate_off=[/dev/sda,/dev/sdb,...]
Turn off the "Status" LED and "Failure" LED for specified device(s)
$ sudo ledctl off=[/dev/sda,/dev/sdb,...]
Turn off the "Status" LED, "Failure" LED and "Locate" LED for specified device(s)
$ sudo ledctl normal=[/dev/sda,/dev/sdb,...]