topic Re: How to change cluster serial number? in Simulator Discussions

How to change cluster serial number?

Jackie_Xu — Wed, 04 Jun 2025 12:13:46 GMT

Hi,

I installed two ONTAP 9.5P6 simulator nodes and changed the SN ofone node following the installation guide. I configured two single node clusters based on these two nodes. Then I found the cluster SN of both clusters is 1-80-000011.

Is it possible to change the cluster SN? Then I can have two cluster with two different SN.

Thanks,

Jackie

Re: How to change cluster serial number?

Ontapforrum — Tue, 24 Sep 2019 08:52:11 GMT

Yes, absolutely!

You must keep both SysID & Serial number separate, otherwise Licenses will only show for one node and for other it will appear 'unknown-owner'.

Before running these steps, make a note of sysid & serial number:

One your first cluster simulator:
::>system node show -fields sysid,serialnumber

Make note of the pattern in which they are listed. [Hope you have already added the based cluster license provided by licenses.txt file]

sysid will be like = xxxxxxxxx
serial number wil be like = xxxxx-xx-x

Keep it same, whichever pattern they are.

Steps:

1) Start the 2nd Simulator
2) The moment you see it started, press any key, don't wait for the message that says press CTL+C, we don't need it now.
3) It will bring you to the VLOADER or something.
4) Run following commands:
Run command: set boortarg.nvram.sysid=xxxxxxx
Run command: set SYS_SERIAL_NUM=xxxxx-xx-x
Run command: boot
5) once again simulator boots, this time wait for the ctl+c message and press it immediately.
6) Select the option to erase & wipe, I think (4) whatever it is.
7) once wipe is done, it will bring you back to cluster join or create option, choose join.

Once joined, re-run this command again to ensure the two sysid & serila number are separate.

Re: How to change cluster serial number?

Ontapforrum — Tue, 24 Sep 2019 08:54:16 GMT

sysid & serial number is already given in the license.txt file for '2nd node' which applies to both non-esx and esx version. Make sure you put that same in there.

Re: How to change cluster serial number?

Ontapforrum — Tue, 24 Sep 2019 08:55:48 GMT

serialnumber is given in the license.txt file, use the same for sysid and for serialnumber for 2nd simulator.