Dell PowerVault MD3400 Owner's Manual

Also see for PowerVault MD3400: Getting started guide Deployment guide

Contents

Dell PowerVault MD3400 Owner's Manual Manual pdf 13 page image

2Controller ModulesRAID Controller ModulesThe RAID controller modules provide high-performance, advanced virtual disk configuration, and fault-tolerant disk subsystem management. Each RAID controller module contains 4GB or 8GB of mirroredcache for high availability and a battery-powered cache offload mechanism.NOTE: The 8GB mirrored cache is an optional feature.RAID controller modules provide the following data path and enclosure management functions:• Monitoring and controlling enclosure environment elements (temperature, fans, power supplies, andenclosure LEDs)• Controlling access to the physical disks• Communicating enclosure attributes and states to the host server and management stationEach RAID controller module has multiple SAS IN ports for host access. The ports provide redundant hostconnections and support a high availability storage environment. Various configurations can be utilized,in both single controller (simplex) and dual controller (duplex) modes, to connect the storage enclosureto hosts depending on specific redundancy needs.For information on cabling, see the MD3400 and MD3420 Series Storage Arrays Deployment Guide, atdell.com/powervaultmanuals.RAID Controller Module Connectors and FeaturesFigure 7. MD3400 and MD3420 Series SAS RAID Controller Module13