Dell SE500W Failback

Using MSCS 69

The Cluster Service continues to try and fail over a group until it succeeds or until the number

of attempts occurs within a predetermined time span. A group’s failover policy specifies the

maximum number of failover attempts that can occur in an interval of time. The Cluster

Service will discontinue the failover process when it exceeds the number of attempts in the

group’s failover policy.

Modifying Your Failover Policy

Because a group’s failover policy provides a framework for the failover process, make sure that

your failover policy is appropriate for your particular needs. When you modify your failover

policy, consider the following guidelines:

• Define the method in which the Cluster Service detects and responds to individual resource

failures in a group.

• Establish dependency relationships between the cluster resources to control the order in

which the Cluster Service takes resources offline.

•Specify

Time-out

, failover

Threshold

, and failover

Period

for your cluster resources.

–

Time-out

controls how long the Cluster Service waits for the resource to shut down.

–

Threshold

and

Period

control how many times the Cluster Service attempts to fail over a

resource in a particular period of time.

• Specify a

Possible owner list

for your cluster resources. The

Possible owner list

for a resource

controls which cluster nodes are allowed to host the resource.

Failback

When the System Administrator repairs and restarts the failed cluster node, the opposite

process occurs. After the original cluster node has been restarted and rejoins the cluster, the

Cluster Service will bring the running application and its resources offline, move them from the

failover cluster node to the original cluster node, and then restart the application. This process

of returning the resources back to their original cluster node is called failback.

You can configure failback to occur immediately at any given time, or not at all. However, be

sure to configure the failback time during your offpeak hours to minimize the effect on users, as

they may see a delay in service until the resources come back online.

se500wbk1.book Page 69 Thursday, June 16, 2005 4:19 PM

Contents

Main Notes, Notices, and Cautions Abbreviations and Acronyms Contents 1 Introduction 2 Cabling Your Cluster Hardware 3 Preparing Your Systems for Clustering 4 Installing Your Cluster Management Software 5 Using MSCS 6 Upgrading Your System to a Cluster Configuration 7 Maintaining Your Cluster A Troubleshooting B Cluster Data Form Tables Introduction Intended Audience Obtaining More Information Obtaining Technical Assistance Overview Virtual Servers and Resource Groups Quorum Resource Shared Storage Systems PowerEdge Cluster SE500W Solution Operating Systems 12 Storage System NOTE: Hardware and Software Technologies Cluster Components System Requirements Cluster Nodes Table 1-3 lists the hardware requirements for the cluster nodes. Cluster storage NOTE: Other Documents You May Need Cabling Your Cluster Hardware Cabling for the Cluster SE500W Solution Cabling One PowerVault 22xS Shared Storage System to a Cluster SE500W Page Cabling Two PowerVault 22xS Storage Systems to a Cluster SE500W Cabling Three or Four PowerVault 22xS Storage Systems to a Cluster SE500W Cabling Your Public and Private Networks Cabling Your Public Network Cabling Your Private Network NIC Teaming Cabling the Mouse, Keyboard, and Monitor Power Cabling for the PowerEdge Cluster SE500W Solution Page 26 Page Page Preparing Your Systems for Clustering Before You Begin Installation Overview Selecting a Domain Model Configuring the Cluster Nodes as Domain Controllers Configuring the Internal Drives in Your Cluster Nodes Installing and Configuring the Windows Operating System Page Configuring Windows Networking Assigning Static IP Addresses to Your Cluster Resources and Components Configuring IP Addresses for the Private Network NOTE: NOTE: Page Verifying Cluster Network Communications Configuring the Internet Connection Firewall Installing the PERC RAID Adapters Updating the Windows Driver for the PERC RAID Adapter Installing and Configuring the Shared Storage System Clustering PowerVault Storage Systems Configuring the PowerVault 22xS Storage System for Cluster Mode Page Page Page Preparing the PERC RAID Adapter for Clustering Enabling the Cluster Mode Using the PERC RAID Adapter Setting the SCSI Host Adapter IDs Configuring and Managing Virtual Disks Windows 2000 and Windows Server 2003 Dynamic Disks and Volumes Naming and Formatting Drives on the Shared Storage System Page Page Installing and Configuring MSCS Verifying Cluster Readiness Creating the Quorum Resource Configuring Cluster Networks Running Windows 2000 Configuring Cluster Networks Running Windows Server 2003 Installing and Configuring Microsoft Windows 2000 Cluster Service (MSCS) Configuring Microsoft Windows Server 2003 Cluster Service (MSCS) Adding Cluster Nodes Using the Advanced Configuration Option Verifying Cluster Functionality Verifying MSCS Operation Verifying Cluster Resource Availability Installing Applications in the Cluster Group Page Installing Your Cluster Management Software Microsoft Cluster Administrator Launching Cluster Administrator on a Cluster Node Running Cluster Administrator on a Remote Console Launching Cluster Administrator on a Remote Console Installing Cluster Administrator for Windows Clusters on a Remote Console Using MSCS Cluster Objects Cluster Networks Preventing Network Failure Node-to-Node Communication Network Interfaces Cluster Nodes Forming a New Cluster Joining an Existing Cluster Groups Cluster Resources Dependent Resources Setting Resource Properties Configuring Resource Dependencies Setting Advanced Resource Properties Resource Parameters Quorum Disk (Quorum Resource) Resource Failure Creating a New Resource Deleting a Resource File Share Resource Type Configuring Active and Passive Cluster Nodes Failover and Failback Failover Page Failback Page Upgrading Your System to a Cluster Configuration Certification Requirements Before You Begin Configurations Using Non-Dell Products Completing the Upgrade Upgrading Your Operating System Performing a Rolling Upgrade Page Maintaining Your Cluster Adding a Network Adapter to a Cluster Node Page Changing the IP Address of a Cluster Node on the Same IP Subnet Uninstalling MSCS From Clusters Running Windows 2000 Advanced Server Removing Nodes From Clusters Running Windows Server 2003 node_name <node_name> Running chkdsk /f on a Quorum Disk Recovering From a Corrupt Quorum Disk Replacing a Cluster-Enabled Dell PERC RAID Adapter Replacing a Cluster Node Changing the Cluster Service Account Password in Windows Server 2003 cluster_name Reformatting a Cluster Disk Adding New Physical Drives to an Existing Shared Storage System Rebuilding Operation in Dell OpenManage Utilities Upgrading the PowerVault 22xS EMM Firmware Using Array Manager Page Page Troubleshooting 88 Page 90 Page Page Abbreviations and Acronyms Page Page Page Cluster Data Form PowerEdge Cluster SE500W Solution Data Form Page Page Page Index A C D E F G H I P Q R S T U V W Figures Page Tables