Dell PS4000 Firmware Update Path

I have been trying to upgrade the firmware to v6 on our old PS4000 series equallogic array for some time now without much success. It seems I can't go from 4.3.8 to any version past 5.1.2.

I thought I would post the upgrade path which I found through trial and error.

4.3.8 > 5.0.7 > 5.2.5 > 6.0.1

"Could not connect to the requested VDP appliance."

vSphere 5.1 VDP connection problems:

I was getting this error when trying to get to the VDP configuration in the web client.

"Could not connect to the requested VDP appliance.
Would you like to be directed to the VDP configuration screen to troubleshoot the issue?"

After a long time redeploying appliances and changing every setting, I tried logging into the web client as the SYSTEM-DOMAIN\admin account and can now configure my backups. I'll come back once I've worked out what permissions were not available on my regular AD accounts and update this.

Update: VMware has posted a KB article to their site which may help. My issue still stands though and I still can't get my regular AD account to work. I can get other AD accounts working though so there must be another permission somwhere.

Here is the KB