AlwaysOn Shared network location change requrest We have successfully setup the Alwayson with different subnets and it was working fine.
But unfortunately the existing NAS storage had a problem. Now our storage team provide new storage IP.

We need to replace the existing storage configuration with new one in Shared network location wizard . Is there any way without removing the existing setup due we already configured around 500 database. 

Please find the below screen shot and do the needful.
The shared network location in that wizard is only used in the wizard and only used as a temporary location to backup the databases to and restore from that location to any of the replicas that could host that database.

Apart from that, it has no use and is not used internally anywhere in availability groups.

You can easily change the value to whatever new value your storage team has given you, but you'll want to double check that all of the replicas have access to said shared location.