NFS file system access during a TSO

NFS provides a single namespace across all ECS nodes and can continue to operate in the event of a TSO. When you mount an NFS export, you can specify any of the ECS nodes as the NFS server or you can specify the address of a load balancer. Whichever node you point at, the ECS system is able to resolve the file system path.

In the event of a TSO, if your load balancer is able to redirect traffic to a different site, your NFS export continues to be available. Otherwise, you must remount the export from another, non-failed site.

When the owner site fails, and ECS is required to reconfigure to point at a non-owner site, data can be lost due to NFS asynchronous writes and also due to unfinished ECS data replication operations.

For more information on how to access NFS-enabled buckets, see Introduction to file access.