EMC CX500I Configuration Guide - Page 26

About Switched Shared Storage and SANs (Storage Area Networks), easier file backup and recovery

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About CX300, CX500, CX500i, and CX700 Storage Systems About Switched Shared Storage and SANs (Storage Area Networks) This section explains the features that let multiple servers share disk-array storage systems on a SAN (storage area network). A SAN is one or more storage devices connected to servers through Fibre Channel switches to provide a central location for disk storage. Centralizing disk storage among multiple servers has many advantages, including ◆ highly available data ◆ flexible association between servers and storage capacity ◆ centralized management for fast, effective response to users' data storage needs ◆ easier file backup and recovery An EMC® SAN is based on shared storage; that is, the SAN requires EMC Access Logix software to provide flexible access control to storage-system LUNs. Within the SAN, a network connection to each SP in the storage system lets you configure and manage it. Server Server Server Adapter Adapter Adapter Adapter Adapter Adapter Path 1 Path 2 FC Switch or LAN FC Switch or LAN SP A SP B Storage System SP A SP B Storage System EMC1810b Figure 1-10 Components of a SAN Fibre Channel switches can control data access to storage systems through the use of switch zoning, explained earlier on page 1-6. 1-14 EMC CLARiiON CX300, CX500, CX500i, and CX700 Storage Systems Configuration Planning Guide

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1-14
EMC CLARiiON CX300, CX500, CX500i, and CX700 Storage Systems Configuration Planning Guide
About CX300, CX500, CX500i, and CX700 Storage Systems
About Switched Shared Storage and SANs (Storage Area
Networks)
This section explains the features that let multiple servers share
disk-array storage systems on a SAN (storage area network).
A SAN is one or more storage devices connected to servers through
Fibre Channel switches to provide a central location for disk storage.
Centralizing disk storage among multiple servers has many
advantages, including
◆
highly available data
◆
flexible association between servers and storage capacity
◆
centralized management for fast, effective response to users’ data
storage needs
◆
easier file backup and recovery
An EMC
®
SAN is based on shared storage; that is, the SAN requires
EMC Access Logix software to provide flexible access control to
storage-system LUNs. Within the SAN, a network connection to each
SP in the storage system lets you configure and manage it.
Figure 1-10
Components of a SAN
Fibre Channel switches can control data access to storage systems
through the use of switch zoning, explained earlier on page 1-6.
EMC1810b
Server
Server
Server
Storage System
SP A
SP B
Storage System
SP A
SP B
Path 1
Path 2
FC Switch
or
LAN
Adapter
Adapter
Adapter
Adapter
Adapter
Adapter
FC Switch
or
LAN