Dell CX4 Troubleshooting Guide - Page 8
Cluster Solution, Cluster Hardware Requirements
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Cluster Solution Your cluster implements a minimum of two nodes to a maximum of either eight nodes (for Windows Server 2003) or sixteen nodes (for Windows Server 2008) and provides the following features: • 8-Gbps and 4-Gbps Fibre Channel technology • High availability of resources to network clients • Redundant paths to the shared storage • Failure recovery for applications and services • Flexible maintenance capabilities, allowing you to repair, maintain, or upgrade a node or storage system without taking the entire cluster offline Implementing Fibre Channel technology in a cluster provides the following advantages: • Flexibility - Fibre Channel allows a distance of up to 10 km between switches without degrading the signal. • Availability - Fibre Channel components use redundant connections providing multiple data paths and greater availability for clients. • Connectivity - Fibre Channel allows more device connections than Small Computer System Interface (SCSI). Because Fibre Channel devices are hot-pluggable, you can add or remove devices from the nodes without taking the entire cluster offline. Cluster Hardware Requirements Your cluster requires the following hardware components: • Cluster nodes • Cluster storage 8 Introduction