Developed by SUN Microsystems in the 1980's - the Network File System (NFS) is traditionally used by UNIX and Linux systems to access a shared directory by multiple hosts at the same time. In difference to shared storage and cluster file systems NFS is unexpensive, mature and easy to use. In common NFS server deployments, the NFS server represents the single point of failure for clients. If the NFS server fails, clients have no access to the shared directory and any I/O to the mounted NFS device hangs. LifeKeeper in combination with the NFS server recovery kit enables the administrator to eliminate the NFS server as single point of failure and provides highly available NFS mounts to clients.
- LifeKeeper NFS ARK application scenario
- protection of NFS server functionality
- provides transparent NFS failover for clients using a virtual IP address
- no stale file handles
- eliminates NFS server as single point of failure
- requires Linux kernel 2.4.21 and above (including kernel 2.6) (e.g. SLES9, SLES10, RHEL3, RHEL4, RHEL5)
- supports failover of NFS locks in active / passive configurations with kernel 2.6 (rpc.statd limitation)
- supports most of the LifeKeeper compatible shared storage devices including SAN, MD, DRBD and SDR
- SteelEye Competence and Support Center, 7 x 24h support.
- Response time of less than 2 hours for business critical cases.
- Included software maintenance.
- Business Continuity Assessment.
- Business Continuity Design.
- LifeKeeper Configuration Validation.
- LifeKeeper Installation.
- LifeKeeper Training.
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