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Chapter 2: Starting Up
Before You Start: Understanding GALAXY Storage Architecture 2-5
2.1.2 HDX4 Configuration Samples
Figure 2-3: Typical HDX4 Deployment
Before you start to configure a RAID system, make sure that hardware
installation is completed before any configuration takes place.
Shown above is a typical 8-port, redundant-controller system using AAPP
(active-active-passive-passive) mapping. Doing so allows a LUN to be
presented to host via multiple data paths to withstand cable disconnections or
hardware failure. The passive paths do not carry data traffic in normal
conditions, and will become active when active paths fail.
Port binding, zoning, file-locking, and other access control mechanisms
should be implemented to avoid multiple servers from accessing the same
storage volume.
Using a redundant-controller HDX4 , system resource is manually separated
by assigning logical volumes to different RAID controllers.
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