---
name: "sas_disk_blink"
section: "8"
platform: "linux"
package: "sdparm"
version: "1.12-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/sas_disk_blink"
---

# sas\_disk\_blink(8)

blink the LED on a SAS disk

## NAME

sas\_disk\_blink - blink the LED on a SAS disk

## SYNOPSIS

**sas\_disk\_blink** \[*--help*\] \[*--set NUM*\] \[*--verbose*\] *DEVICE*

## DESCRIPTION

This bash shell script attempts to blink the LED on the SAS disk referred to by *DEVICE*. By default the LED will blink for 30 seconds. This is meant to help identify which disk corresponds to a given *DEVICE*.

The script use the sdparm utility and manipulates the "Ready LED Meaning" (RLM) field in the Protocol specific port mode page in order to blink the LED.

## OPTIONS

Arguments to long options are mandatory for short options as well.

- **-h**, **--help**

  print out the usage message then exit.

- **-s**, **--set** *NUM*

  when *NUM* is 0 then the RLM field is cleared. When *NUM* is 1 then the RLM field is set. When *NUM* \> 1 then the SAS disk LED is made to blink for *NUM* seconds. If this option is not given then the SAS disk LED is made to blink for 30 seconds.

- **-v**, **--verbose**

  increase level or verbosity.

## EXIT STATUS

The exit status of this script is 0 when it is successful. Otherwise the exit status is that of the last sdparm utility called. See the [sdparm(8)](/sdparm/8.md) man page.

## AUTHORS

Written by D. Gilbert

## COPYRIGHT

Copyright © 2013-2016 Douglas Gilbert\
 This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

## SEE ALSO

**sdparm (sdparm)**