Locate-a-disk-in-TrueNAS
Here's an improved version of the step-by-step guide with enhanced formatting and wording:
Locating a Disconnected Disk in TrueNAS
This procedure was performed using a SAS3008 RAID controller on a SuperMicro CSE-847 with TrueNAS scale installed. The process turns on the RED LED on drives to identify the physical location of a failed disk.
Step 1: Identify the Index of the RAID Controller
To start, you need to find the index number of your RAID controller using the following command:
sas3ircu list
This will display information about the RAID controllers connected to your system. Note down the index number next to the model number of the RAID controller.
Example Output:
root@truenas[~]# sas3ircu list
Avago Technologies SAS3 IR Configuration Utility.
Version 16.00.00.00 (2017.04.26)
Copyright (c) 2009-2017 Avago Technologies. All rights reserved.
Adapter Vendor Device SubSys SubSys
Index Type ID ID Pci Address Ven ID Dev ID
----- ------------ ------ ------ ----------------- ------ ------
0 SAS3008 1000h 97h 00h:01h:00h:00h 1bd4h 000ch
SAS3IRCU: Utility Completed Successfully.
Step 2: List All Drives Connected to the RAID Controller
Replace 0 with your RAID controller index from Step 1 and run:
sas3ircu 0 display
This will list all drives connected to the RAID controller. Look for a skipped number or a drive that does not match others in terms of manufacturer, model number, or firmware revision.
Example Output:
root@truenas[~]# sas3ircu 0 display
Avago Technologies SAS3 IR Configuration Utility.
Version 16.00.00.00 (2017.04.26)
Copyright (c) 2009-2017 Avago Technologies. All rights reserved.
Device is a Hard disk
Enclosure # : 2
Slot # : 5
SAS Address : 5003048-0-01ef-0d05
State : Ready (RDY)
Size : 7630885 MB
... (other drives listed)
Step 3: Turn On the LED on the Physical Drive
Replace 0 with your RAID controller index, 2 with your enclosure number, and 5 with your slot number. Run:
sas3ircu 0 locate 2:5 on
This will turn on the LED on the physical drive identified in Step 2.
Example Output:
root@truenas[~]# sas3ircu 0 locate 2:5 on
Avago Technologies SAS3 IR Configuration Utility.
Version 16.00.00.00 (2017.04.26)
Copyright (c) 2009-2017 Avago Technologies. All rights reserved.
SAS3IRCU: LOCATE command completed successfully.
SAS3IRCU: Command LOCATE Completed Successfully.
SAS3IRCU: Utility Completed Successfully.
Step 4: Turn Off the LEDs
After identifying your drive, turn off the LEDs by running:
sas3ircu 0 locate 2:5 off
Repeat this process for each drive where the red LED is on.