Using NFS with PowerHA SystemMirror

PowerHA SystemMirror includes the following functionality:

• NFS Configuration Assist to relinquish NFS exports and cross mounts into PowerHA SystemMirror cluster.
• Pre-configured application monitor (clam_nfsv4) to monitor NFSv4 exports and the health of the NFS daemons.
• Ability to configure NFSv2/v3 and/or NFSv4 exports of the same file system/directory.
• Reliable NFS server capability that allows a backup processor to recover current NFS activity should the primary NFS server fail, preserving the locks on NFS file systems and dupcache. This functionality is restricted to two-node Resource Groups if it contains NFSv2/v3 exports. If all the exports in the resource group are NFSv4 only, then up to 16-node Resource Group configurations are supported.
• Ability to specify a Stable Storage location to maintain the NFSv4 state across all the nodes of the Resource Group.
• Ability to specify a network for NFS mounting.
• Ability to define NFS exports and mounts at the directory level.
• Ability to specify export options for NFS-exported directories and file systems.