1
About Switched Shared Storage and SANs (Storage Area Networks)
1-11
About Fibre Channel FC4700 Storage Systems and Storage Networks
Figure1-9 Sample Shared Storage Configuration
Access Control with Shared Storage
Access control permits or restricts a server’s access to shared storage.
Configuration access, the ability to configure storage systems, is
governed by username and password access to a configuration file on
each server.
Data access, the ability to read and write information to
storage-system LUNs, is provided by Storage Groups. During
storage-system configuration, using a management utility, the system
administrator associates a server with one or more LUNs. The
associated LUNs compose a Storage Group.
EMC1811
Highly available cluster
File server
Adapter
Adapter
Operating
system A
Mail server
Adapter
Adapter
Operating
system A
Database
server
Adapter
Adapter
Operating
system B
SP A SP B
LUN
LUN
LUN
LUN
LUN
LUN
LUN
Physical storage
system with up to
100 disks per system
Cluster Storage
Group
Database Server
Storage Group
Path 1
Path 2
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