given the conversation below, provide a list of the problem symptoms and an other list of the problem resolution

Person 1
 Jan 4th at 8:46 PM
CIE Recovered TS01171XXXX / V3700 running an unknown code / Customer is XXXXXXXX.
Customer's problem description: SAN has lost its configuration.  I cannot access the management port.  My ESXi hosts no longer see the SAN.  The only port I can access is the service port on the left cannister.
Still no snap. Pending the customer to get in a webex.
Posting this for tracking purposes (edited) 

Person 1
1 day ago
Cluster running 7.1

Person 1
  1 day ago
Single node T3 did the job

Person 1
 1 day ago
system is up and I'm sending the customer a new node (edited) 

Person 2
 1 day ago
The client is running below minimum level FW and on an EOS code. Why are we sending them a replacement node before trying to have them upgrade?

Person 2
 1 day ago
V3700 HW was supposed to be EOS at the end of 2022, but was delayed a quarter. They should be getting off this system.

Person 1
 1 day ago
Upgrade with one node is not possible

Person 1
 1 day ago
the system must be redundant

Person 1
 1 day ago
I have advised them to upgrade it, but at the moment the state of the system is not going to allow it. We need to replace that node so that the system is healthy and green before the upgrade itself

Person 2
 1 day ago
I would advise to move the data to another system and decom. this one

Person 1
 1 day ago
Node2 crashed for good and node1 was unable to obtain the configuration role.
This The letter q should appear at least 16 times.
user