topic Re: Nimble controller issue in Array Setup and Networking

Nimble controller issue

Manivel010101 — Tue, 25 Aug 2026 07:31:53 GMT

Hi All,

I have a old Nimble storage test setup and the same is not with Nimble support.

Model CS3000 ES2-H21T

It has 2 controllers.

Controller A

Controller B

Controller A had boot loop issue and the failover did not happen automaticaly to Controller B.

Controller B IP ping works but no SSH.

I replaced the Controller A with new controller A.

Please help how to fix the issue?

I can do configuration from the scratch.

Could you please help to format and configure the controllers from the scratch?

Re: Nimble controller issue

Azr_geek — Tue, 25 Aug 2026 07:29:43 GMT

Hello @Manivel010101,

Look into these steps:

1. Connect to the controllers
Use a console cable to connect directly to each controller.
Turn them on and wait for the setup prompts.

2. Reset controllers if needed
If the controllers are not in a clean state, you can reset them to factory settings:
Power off the controller.
Power it back on and press the reset button.
Follow the instructions to reset it.

3. Set up Controller A (the new one)
Connect via console.
Power it on.
Follow the prompts to give it an IP address, subnet, gateway, and DNS.

4. Set up Controller B
Do the same for Controller B (the one that’s already there but unreachable via SSH):
Connect via console.
Power it on.
Assign network settings (IP, subnet, etc.).

5. Make the two controllers work together
Use the CLI (command line interface) to set up the cluster:
Enter setup commands to name the cluster, add Controller B, and connect them.
Set passwords when asked.

6. Check everything is working
Use commands like `cluster show` to see if both controllers are online and working together.
Make sure failover is working properly, so if one controller fails, the other takes over.

7. Set up your storage
Once the controllers are connected, you can create and organize storage volumes as needed.

8. Troubleshooting SSH issues
If you can’t SSH into Controller B:
Check if it’s connected to the network.
Make sure SSH is enabled (`ssh enable` command).

Re: Nimble controller issue

Manivel010101 — Tue, 25 Aug 2026 10:53:34 GMT

Thank you for your valuable inputs.
I will take a look and confirm back in a few days.

Re: Nimble controller issue

buzzsubash — Tue, 01 Sep 2026 05:44:27 GMT

Hi @Manivel010101
Were you able to recover the controller?

Re: Nimble controller issue

Manivel010101 — Tue, 08 Sep 2026 16:51:03 GMT

No Subahsh.

It is asking the password to login to BIOS but no password are accepting. I dont know the BIOS password.

Also, I could not find out where is the factory reset option?

Any advise?