blakmk,
This may not be the right solution for your environment and there may be an easy way to accomplish the same objective, but I wanted to put it out there for your consideration.
The following configuration is from a few years back (in a former life), but I'll do my best to remember the details.
The environment had multiple physical paths to the drives containing the user's home directories. In this case, I believe it was a 2-node cluster where both nodes had a direct connection (vs. SAN) to the drives. The data was later moved to drives in a storage box on the SAN, but the concept remained the same.
The primary node used NFS to make the home directories accessible to 20-30 systems in the same NIS domain. If the primary node failed, the secondary node would mount the drives and make them available via NFS.
A cluster alias was used by the NIS systems to originally mount the home file system so that they would not have to be re-mounted if a failover occurred. On the NIS systems, symbolic links were used to point to the NFS mounted file system (the home directories).
Side note: You should be able to accomplish the same configuration with a NAS solution.
Hope this helps!
Biker
Systems/Network Administrator
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