Dell ISCSI manual Cluster Solution, Connectivity

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Introduction

A Dell Failover Cluster combines specific hardware and software components to provide enhanced availability for applications and services that run on your cluster. A Failover Cluster reduces the possibility of any single point of failure within the system that can cause the clustered applications or services to become unavailable. It is recommended that you use redundant components like servers, storage power supplies, connections between the nodes and the storage array(s), and connections to client systems or other servers in a multi-tier enterprise application architecture in your cluster.

This document provides information and specific configuration tasks that enable you to configure your Failover Cluster with Dell EqualLogic PS Series Internet Small Computer System Interface (iSCSI) storage array(s).

For more information on deploying your cluster with Microsoft Windows Server 2003 operating systems, see the Dell Failover Clusters with Microsoft Windows Server 2003 Installation and Troubleshooting Guide at support.dell.com/ manuals.

For more information on deploying your cluster with Windows Server 2008 operating systems, see the Dell Failover Clusters with Microsoft Windows Server 2008 Installation and Troubleshooting Guide at support.dell.com/manuals.

For a list of supported operating systems, hardware components, and driver or firmware versions for your Failover Cluster, see the Dell Cluster Configuration Support Matrices at dell.com/ha.

Cluster Solution

Your cluster supports a minimum of two nodes to a maximum of either eight nodes (with Windows Server 2003 operating systems) or sixteen nodes (with Windows Server 2008 operating systems) and provides the following features:

•Gigabit and 10 Gigabit Ethernet iSCSI technologies

•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 array without taking the entire cluster offline

The iSCSI protocol encapsulates iSCSI frames that include commands, data, and status into Transmission Control Protocol/Internet Protocol (TCP/IP) packets to be transported over Ethernet networks. The iSCSI frames are sent between the Microsoft iSCSI Initiator that resides in the host and the iSCSI target, which is a storage device.

Implementing iSCSI in a cluster provides the following advantages:

Geographic distribution Wider coverage of Ethernet technology allows cluster nodes and storage arrays to be located in different sites.

Low cost for availability Redundant connections provide multiple data paths that are available through inexpensive TCP/IP network components.

Connectivity

A single technology for connection of storage array(s), cluster nodes, and clients.

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Contents Hardware Installation and Troubleshooting Guide Page Contents Page Connectivity Cluster SolutionCluster Storage Cluster Hardware RequirementsCluster Nodes Cluster Storage Requirements Network Switches Dedicated To iSCSIDell EqualLogic PS Series Storage Array Requirements NICs Dedicated To iSCSINetwork Configuration Recommendations ISCSI SAN-Attached Cluster Supported Cluster ConfigurationsOther Documents You May Need Page Mouse, Keyboard, And Monitor Cabling Information Power Supplies Cabling InformationPrivate network Cluster Cabling Information For Public And Private NetworksNetwork Connection Description Public network Method Hardware Components For Public NetworkFor Private Network NIC Teaming Storage Arrays Cabling InformationCabling The Storage For Your iSCSI SAN-Attached Cluster Dual-Port Network Adapters UsageTwo-Node iSCSI SAN-Attached Cluster Sixteen-Node iSCSI SAN-Attached Cluster Cabling The Dell EqualLogic PS4110/PS6110 Storage ArraysFor more information, see the figures below Dell EqualLogic PS6110 storage system Cluster node Switch Cabling The Dell EqualLogic PS5000/PS5500 Storage Arrays Dell EqualLogic PS5000 storage system Dell EqualLogic PS6000 storage system Switch Dell EqualLogic PS6500 storage system Obtaining More Information Page Preparing Your Systems For Clustering Configuring a ClusterHost Integration Tools Installation OverviewAdditional Information For Installing iSCSI NICs Running The Remote Setup Wizard Installing The Host Integration ToolsArray Configuration EqualLogic PS Series Arrays And GroupsInitializing An Array And Creating a Group Group ConfigurationMember Successfully Added to Group Initializing An Array And Expanding a GroupEnabling Computer Access To a Group Computer Access To a GroupConfiguring Multipath I/O Between a Computer And a Group Configuring Group Access dialog box, click FinishConfiguring Firewall To Allow Icmp Echo Requests Installing The Microsoft iSCSI Software InitiatorConfiguration Overview Of Shared Storage Arrays Modifying The Registry SettingsClick Volumes and Create volume Creating VolumesRunning The Group Manager GUI Group Manager GUI ComponentsCreating Access Control Records Connecting Hosts To Volumes Advanced Storage FeaturesRestoring Snapshots SnapshotsCreating Snapshots Cloning Volumes VolumesRestoring Volumes Clone Volume Space Reserve dialog box is displayedReplication Replicating VolumesVolume Collections Installation And Configuration Of a Failover ClusterCreating Volume Collections Thin ProvisioningPage Support.microsoft.com Problem Probable Cause Corrective ActionSelect Advanced → Minimum ClusterSelect Modify Volume Settings Problem Probable CauseClick Cluster Services ServiceDo you want to proceed y/nn Additional Networks Cluster InformationPage ISCSI Configuration Worksheet
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