Clusters and server farms

Server and Cluster Administration Guide for Hitachi NAS Platform

Part Number

The key differences between a cluster and a server farm are the behavior when a failure occurs, ease of management, and scalability of operations:

  • A cluster allows an EVS to be automatically migrated among cluster nodes in the event of a failure, and management of all nodes in the cluster is centralized. The use of a single namespace allows clients to mount a single network resource, while having the actual storage virtualized among different devices in the cluster.
  • A server farm allows an EVS to be migrated manually among servers in the server farm, but this is a manual process, and it does not happen automatically in the event of a failure. All servers in the server farm may be managed by a single NAS Manager, but each server must be managed as an independent unit.