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rossaveling

3 Posts

1192

February 17th, 2022 04:00

PowerVault ME4024 - Changing controller IP addresses

Hi All,

I've got an ME4024 that was originally deployed using a single /24 subnet for iSCSI networking.  I'm planning to introduce redundancy on that network and will be adding an additional iSCSI NIC to clustered Hyper-V hosts.  Therefore I'd like to re-IP both controllers to be on different /16 networks.

Despite the hosts only having a single iSCSI NIC at this time, MPIO is in use with 8 paths configured to all ports on the ME4024..

I hope to do each controller one at a time so to keep everything up and avoid VM downtime.  Can anyone confirm that changing IPs on a single controller will not disrupt traffic on the other controller?

Thanks in advance,

Ross

DELL-Chris H

Moderator

 • 

9.6K Posts

February 17th, 2022 12:00

Rossaveling,

 

You can indeed change the individual IP's without a loss of the traffic. Now you will need to move all traffic from the controller first, over to the second controller, then you can make the change.

 

It runs along the line of a controller replacement, without replacing said controller. 

 

One way of moving the traffic would be to shutdown the controller, as described on page 75 here. 

 

You can also find the other steps on configuring the iSCSI as well.

 

Let me know how if this helps.

 

 

rossaveling

3 Posts

February 18th, 2022 06:00

Many thanks Chris.

So;

  1. Shut down controller B
  2. Change controller B port IPs to new subnet
  3. Start controller B
  4. Configure host additional iSCSI NICs on new subnet, check connectivity, update MPIO paths and confirm they are active
  5. Shut down Controller A
  6. Change controller A port IPs to new subnet
  7. Start controller A
  8. Configure host existing iSCSI NICs on new subnet, check connectivity, update MPIO paths and confirm they are active

Thanks for linking the documentation - I've looked but it's not clear to me how you start a controller after a shutdown?

Thanks again,

Ross

DELL-Chris H

Moderator

 • 

9.6K Posts

February 18th, 2022 08:00

Rossaveling,

 


That looks correct.

 


To start the controller perform the following steps:

 

1. Perform one of the following:
● In the banner, click the system panel and select Restart System.
● In the System topic, select Action > Restart System.

 

 

The Controller Restart and Shut Down panel opens.

 

 

2. Select the Restart operation.


3. Select the controller type to restart: Management or Storage.


4. Select the controller module to restart: Controller A, Controller B, or both.


5. Click OK.
A confirmation panel appears

 

 

6. Click OK.
A message is displayed that describes restart activity

 



You can find these processes in the admin guide found here.

 

Let me know how it goes.

 

 

rossaveling

3 Posts

February 21st, 2022 01:00

Of course, apologies was looking for a specific "Start" action.

Thanks again for your help Chris.

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