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June 1st, 2021 02:00
SC5020 Add unused ports to existing FC Fault Domains
I have a customer with 2x SC5020s replicating using Live Volume. During initial setup they only had enough free SAN Ports to connect 2 ports of each controller. The controllers have 4 FC ports each.
We configured the Fault Domains 1 and 2, each with one port from each controller. Everything works fine.
They have since migrated to newer SAN Switches and now have enough free ports. They would like to connect the remaining FC ports on the SC5020s for more paths and bandwidth.
I know I need to add those new ports to the zoning configuration, and add them to the Fault Domains, but in what order do I need to do that? The user guides aren't very clear on this, and I cannot find anything on adding FC ports to an existing Fault Domain.
Currently my plan is:
- Cable ports to SAN (already done, but the new ports are not yet enabled on the switches)
- Activate ports on SAN Switches
- Check that both one physical and one virtual WWN are logged into each port. Verify that Port 3 of each controller is in one fabric, and Port 4 of each controller in the other fabric.
- Create aliases for the new physical and virtual WWNs
- Add the new physical WWNs to the "physical" zone for each SC5020
- Add the new virtual WWNs to the "virtual" zone for each SC5020
- Add the new WWNs to the "Replicate" zones (physical of SC5020-A with virtual of SC5020-B and vice-versa, as well as all physical ports from both SC5020s in one zone)
- Save and enable zoning config
- Add Port 3 of each controller to Fault Domain 1, and Port 4 to Fault Domain 2
- Add new virtual WWNs to the Host-Storage Zones
- Save and enable zoning config again
- Rescan hosts (Vmware ESX) to check the the new paths are visible.
Am I doing this in the correct order, or do the ports need to be added to the Fault Domains earlier?
Thanks in advance.
DELL-Sam L
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June 1st, 2021 08:00
Hello SteveK821,
The steps that you have laid out will work and you should be able to add your new FC ports to your fault domains. You need to have your san configured before you can add your fault domains, otherwise the host will not be able to see the new connections.
SteveK821
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June 18th, 2021 07:00
Thanks for the help. I only got around to doing it today. The steps were not exactly as I described. Here's what I did in case anyone else in interested:
- Cable ports to SAN
- Activate ports on SAN Switches
- Only the physical WWN for the port logs on. The virtual WWN is only generated when you add the port to a fault domain.
- Edit Fault Domain 1, select Add Ports to Fault Domain, select Port 3 from Top and Bottom Controllers. Click OK, it takes about 10-20 seconds.
- Now you see NPIV on the switch port, with 2 devices logged in (physical and virtual WWNs)
- After a couple of minutes you will see in Dell Storage Manager that all the attached hosts have status "Warning". Only 4 of 6 paths are visible (or something similar). This is because they are not yet able to see all ports from that Fault Domain.
Now you need to do the zoning:
- Create aliases for the new physical and virtual WWNs
- Add the new physical WWNs to the "physical" zone for each SC5020
- Add the new virtual WWNs to the "virtual" zone for each SC5020
- Add the new WWNs to the "Replicate" zones (physical of SC5020-A with virtual of SC5020-B and vice-versa, as well as all physical ports from both SC5020s in one zone)
- Add new virtual WWNs to the Host-Storage Zones
- Save and enable zoning config
After a couple of minutes the warning for each host will disappear and the hosts see new paths.
Repeat this in the second fabric and add Port 4 to Fault Domain 2 using the same process.