CMAPI | Disable failover when shared storage not detected

Currently cmapi defaults failover to be on, as instructions "require" multinode deployments to use NFS or shared storage. However nothing checks this or blocks startup nor throws a warning, and non-HA clusters are technically possible for higher performance.

As a user I would like cmapi to detect on startup if shared storage is used or not and disable failover if not. Having failover enabled when shared storage is not present is an issue because in the event a node goes down, i really am losing x fraction of my data and the cluster should stop working. Since each dbroot has no copy to another node, reassigning the dbroot to another node still online wont work because it'll be emtpy anyways and return tons of errors or the perception that all tables have no data (in the case of an empty dbroot1 extent map being loaded).

Idea:
Write a file to dbroot 1 dir, api call to another machine that checks if it can read that same file on dbroot 1, (maybe an expected hash or checksum to validate its the same file )
Localstorage: /var/lib/columnstore/data1/x
S3: /var/lib/columnstore/storagemanager/metadata/data1/x