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Introduction

5

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), 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|EMC AX4-5i
Internet Small Computer System Interface (iSCSI) storage array(s).

For more information on deploying your cluster with Windows Server 2003
operating systems, see the

Dell™ Failover Clusters with

Microsoft Windows

Server 2003 Installation and Troubleshooting Guide

located on the Dell

Support website at

support.dell.com

.

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

located on the Dell Support website at

support.dell.com

.

For a list of recommended operating systems, hardware components, and
driver or firmware versions for your Failover Cluster, see the

Dell Cluster

Configuration Support Matrices

located on the Dell High Availability

Clustering website at

www.dell.com/ha

.

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Содержание EMC AX4-5I

Страница 1: ...w w w d e l l c o m s u p p o r t d e l l c o m Dell EMC AX4 5i iSCSI Storage Arrays With Microsoft Windows Server Failover Clusters Hardware Installation and Troubleshooting Guide ...

Страница 2: ...missionofDellInc isstrictlyforbidden Trademarks used in this text Dell the DELL logo PowerEdge PowerVault and OpenManage are trademarks of Dell Inc Active Directory Microsoft Windows Windows Server and Windows NT areeithertrademarksorregisteredtrademarksofMicrosoftCorporationintheUnitedStatesand or other countries EMC Navisphere and PowerPath are registered trademarks and MirrorView SAN Copy and S...

Страница 3: ...ter 9 iSCSI SAN Attached Cluster 10 Other Documents You May Need 11 2 Cabling Your Cluster Hardware 13 Cabling the Mouse Keyboard and Monitor 13 Cabling the Power Supplies 13 Cabling Your Cluster for Public and Private Networks 15 Cabling the Public Network 16 Cabling the Private Network 17 NIC Teaming 17 Cabling the Storage Systems 18 Cabling Storage for Your Direct Attached Cluster 18 Cabling St...

Страница 4: ...ling the iSCSI NICs 30 Installing the Microsoft iSCSI Software Initiator 30 Modifying the TCP Registry Settings 31 Installing EMC PowerPath 31 Configuring the Shared Storage System 32 Installing and Configuring a Failover Cluster 41 A Troubleshooting 43 B Cluster Data Form 49 C iSCSI Configuration Worksheet 51 Index 53 ...

Страница 5: ...that enable you to configure your Failover Cluster with Dell EMC AX4 5i Internet Small Computer System Interface iSCSI storage array s For more information on deploying your cluster with Windows Server 2003 operating systems see the Dell Failover Clusters with Microsoft Windows Server 2003 Installation and Troubleshooting Guide located on the Dell Support website at support dell com For more infor...

Страница 6: ...sion Control Protocol Internet Protocol TCP IP packets to be transported over Ethernet networks The iSCSI data blocks are sent between the Microsoft iSCSI Initiator that resides in the host and the iSCSI target which is usually a storage device Implementing iSCSI in a cluster provides the following advantages Geographic distribution Wider coverage of Ethernet technology allows cluster nodes and st...

Страница 7: ... Network Interface Cards NICs for iSCSI access Two iSCSI NICs or two iSCSI NIC ports per node Configure the NICs on separate PCI buses to improve availability and performance TCP IP Offload Engine TOE NICs are also supported for iSCSI traffic NICs public and private networks At least two NICs one NIC for the public network and another NIC for the private network NOTE It is recommended that the NIC...

Страница 8: ...ystem and provide storage functionalities such as snapshots LUN masking and remote mirroring Disk Array Enclosure DAE Provides additional storage and is attached to the disk processor enclosure Standby Power Supply SPS Provides backup power to protect the integrity of the disk processor write cache The SPS is connected to the disk processor enclosure Table 1 3 lists hardware requirements for the A...

Страница 9: ...ernet Switches Dedicated to iSCSI The Gigabit switch for iSCSI access functions as a regular network switch that provides extension and dedicated interconnection between the node and the storage system s Supported Cluster Configurations Direct Attached Cluster In a direct attached cluster both nodes of the cluster are directly attached to a single storage system In this configuration the RAID cont...

Страница 10: ...cause of the single port limitation PowerPath can provide only failover protection not load balancing in a direct attached configuration iSCSI SAN Attached Cluster In an iSCSI switch attached cluster all of the nodes are attached to a single storage system or to multiple storage systems through redundant LANs for high availability iSCSI SAN attached clusters are superior to direct attached cluster...

Страница 11: ...t support dell com NOTE All documentation in the list below unless indicated otherwise is available on the Dell Support website at support dell com The Rack Installation Guide included with your rack solution describes how to install your system into a rack The Getting Started Guide provides an overview of initially setting up your system The Dell Failover Clusters with Microsoft Windows Server 20...

Страница 12: ...d use the operating system software Documentation for any hardware and software components you purchased separately provides information to configure and install those options The Dell PowerVault tape library documentation provides information for installing troubleshooting and upgrading the tape library The EMC PowerPath documentation and Dell EMC Storage Enclosure User s Guides NOTE Always read ...

Страница 13: ...efer to the documentation for each component in your cluster solution to ensure that the specific power requirements are satisfied The following guidelines are recommended to protect your cluster solution from power related failures For nodes with multiple power supplies plug each power supply into a separate AC circuit Use uninterruptible power supplies UPS For some environments consider having b...

Страница 14: ...erEdge Systems and One SPS in the AX4 5i Storage Array redundant power supplies on one AC power strip or on one AC PDU not shown primary power supplies on one AC power strip or on one AC PDU not shown NOTE This illustration is intended only to demonstrate the power distribution of the components SPS ...

Страница 15: ...each node as described in Table 2 1 NOTE To configure Dell blade server modules in a Dell PowerEdge cluster see the Using Dell Blade Servers in a Dell PowerEdge High Availability Cluster document located on the Dell Support website at support dell com redundant power supplies on one AC power strip or on one AC PDU not shown NOTE This illustration is intended only to demonstrate the power distribut...

Страница 16: ...e public network segments You can install additional network adapters to support additional public network segments or to provide redundancy in the event of a faulty primary network adapter or switch port Table 2 1 Network Connections Network Connection Description Public network All connections to the client LAN At least one public network must be configured for Mixed mode for private network fai...

Страница 17: ...ad balancing and fault tolerance Your cluster supports NIC teaming but only in a public network NIC teaming is not supported in a private network and an iSCSI network You should use the same brand of NICs in a team and you cannot mix brands of teaming drivers Table 2 2 Private Network Hardware Components and Connections Method Hardware Components Connection Network switch Fast Ethernet or Gigabit ...

Страница 18: ...ge for Your Direct Attached Cluster A direct attached cluster configuration consists of redundant iSCSI NIC ports cabled directly to a Dell EMC storage system Direct attached configurations are self contained and do not share any physical resources with other cluster nodes or storage systems outside of the cluster Figure 2 4 shows an example of a direct attached single cluster configuration with r...

Страница 19: ...ure 2 5 illustrates methods of cabling a two node direct attached cluster to an AX4 5i storage array 1 Connect cluster node 1 to the storage system a Install a cable from cluster node 1 iSCSI NIC 0 or NIC port 0 to SP A iSCSI port 0 b Install a cable from cluster node 1 iSCSI NIC 1 or NIC port 1 to SP B iSCSI port 0 2 Connect cluster node 2 to the storage system a Install a cable from cluster node...

Страница 20: ...e than a direct attached configuration Figure 2 6 shows an example of a two node iSCSI SAN attached cluster Figure 2 7 shows an example of an eight node iSCSI SAN attached cluster Similar cabling concepts can be applied to clusters that contain a different number of nodes NOTE The connections listed in this section are representative of one proven method of ensuring redundancy in the connections b...

Страница 21: ...ter Hardware 21 Figure 2 6 Two Node iSCSI SAN Attached Cluster cluster node cluster node private network iSCSI connections storage system Gigabit Ethernet switch Gigabit Ethernet switch public network iSCSI connections ...

Страница 22: ...22 Cabling Your Cluster Hardware Figure 2 7 Eight Node iSCSI SAN Attached Cluster public network storage system cluster nodes 2 8 Gigabit Ethernet switch Gigabit Ethernet switch private network ...

Страница 23: ...cable from iSCSI NIC 1 or NIC port 1 to the network switch 1 sw1 2 Repeat step 1 for each cluster node 3 Connect the storage system to the iSCSI network a Connect a network cable from the network switch 0 sw0 to SP A iSCSI port 0 b Connect a network cable from the network switch 0 sw0 to SP B iSCSI port 1 c Connect a network cable from the network switch 1 sw1 to SP A iSCSI port 1 d Connect a netw...

Страница 24: ... Cluster Hardware Figure 2 8 Cabling an iSCSI SAN Attached Cluster to the Dell EMC AX4 5i sw0 sw1 cluster node 2 cluster node 1 AX4 5i storage system 0 1 0 1 Gigabit Ethernet ports 2 Gigabit Ethernet ports 2 SP A SP B ...

Страница 25: ...ork switch 0 sw0 b Connect a network cable from iSCSI NIC 1 or NIC port 1 to the network switch 1 sw1 2 In the first cluster repeat step 1 for each node 3 For each additional cluster repeat step 1 and step 2 4 Connect the storage system to the iSCSI network a Connect a network cable from the network switch 0 sw0 to SP A iSCSI port 0 b Connect a network cable from the network switch 0 sw0 to SP B i...

Страница 26: ...support mount points allowing greater than 22 drives per cluster For more information see Dell Failover Clusters With Microsoft Windows Server 2008 Installation and Troubleshooting Guide or Dell Failover Clusters With Microsoft Windows Server 2003 Installation and Troubleshooting Guide located on the Dell Support website at support dell com Figure 2 9 provides an example of cabling the cluster nod...

Страница 27: ...step 7 and step 10 to step 13 see the Preparing your systems for clustering section of Dell Failover Clusters with Microsoft Windows Server 2003 Installation and Troubleshooting Guide or Dell Failover Clusters with Microsoft Windows Server 2008 Installation and Troubleshooting Guide located on the Dell Support website at support dell com 3 Deploy the operating system including any relevant service...

Страница 28: ...eate at least one logical unit number LUN The LUN is used as a cluster Quorum disk for Windows Server 2003 Failover cluster and as a Witness disk for Windows Server 2008 Failover cluster Ensure that this LUN is presented to the systems that you are configuring as cluster nodes NOTE For security reasons it is recommended that you configure the LUN on a single node as mentioned in step 8 when you ar...

Страница 29: ...2003 R2 Enterprise x64 Edition operating system If the operating system varies among nodes it is not possible to configure a failover cluster successfully It is recommended that you establish server roles prior to configuring a failover cluster depending on the operating system configured on your cluster For a list of Dell PowerEdge systems iSCSI NICs recommended list of operating system variants ...

Страница 30: ...nstalled along with the operating system install them at this time For information about supported NICs and drivers see the Dell Cluster Configuration Support Matrices located on the Dell High Availability Cluster website at www dell com ha Installing the Microsoft iSCSI Software Initiator 1 Use a web browser and go to the Microsoft Download Center website at www microsoft com downloads 2 Search f...

Страница 31: ... subkey at HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services Tcpip Parameters Interfaces 4 Click each interface GUID associated with the iSCSI networks and perform the following steps a Select Edit New DWORD value b Name the new value TcpAckFrequency c Assign a value of 1 5 Exit the Registry Editor Installing EMC PowerPath EMC PowerPath detects a failed storage path and automatically re routes ...

Страница 32: ...ork 2 If applicable install the expansion pack using Navisphere Express 3 Install the Navisphere Server Utility on each cluster node 4 Configure the iSCSI Initiator on each cluster node 5 Assign the virtual disks to the cluster nodes Installing the Navisphere Storage System Initialization Utility The Navisphere Storage System Initialization Utility provides a user interface to initialize your AX4 ...

Страница 33: ...m and it has not been installed install it at this time 1 From the management host open a web browser 2 Enter the IP address of an SP in the storage system 3 Log in to Navisphere Express with the username and password that you specified during the storage system initialization 4 Go to System Navisphere Express navigation pane and click Software 5 In the System Software window click Upgrade Softwar...

Страница 34: ...dress on the storage array Updating the file system information Adding removing or replacing a NIC Starting and stopping a snapshot To install Navisphere Server Utility 1 Log in to the Windows Server operating system as an administrator 2 Insert the system support media into the cluster node 3 If prompted select the language 4 From the Main Menu click Install Products on Server 5 From the Install ...

Страница 35: ... is configured with a unique iSCSI name or Internet Qualified Name IQN in a PowerEdge system allowing an administrator to identify and manage For iSCSI access the iSCSI Initiator assigns the same iSCSI name to all NICs in the PowerEdge system so they appear as one single initiator However each NIC is still identified by a unique IP address The PowerEdge SE600Wi cluster solution supports NICs with ...

Страница 36: ...lient on the storage system gathers all the storage system iSCSI port information and stores it locally on the storage system When you add a cluster node to the storage system iSNS configuration Navisphere Express establishes a connection from the storage system to the iSNS server and then registers the information stored on the storage system with the iSNS server For information about setting the...

Страница 37: ...the Server Network Adapter IP set to Default This allows the iSCSI initiator to automatically fail over to an available NIC in the event of a failure d Click Logon to connect to the selected target e If the CHAP authentication is enabled on the target a CHAP login dialog box is displayed Enter the CHAP security information If you also use mutual CHAP for the software Initiator to authenticate the ...

Страница 38: ...gets using the target portal Discover iSCSI targets for this target portal Discovers targets known to the specified iSCSI SP data port 5 Click Next 6 For each target you want to log in to a In the iSCSI Targets window select the IP address of the Inactive target b In the Login Options section select Also login to peer iSCSI target for High Availability recommended if the peer iSCSI target is liste...

Страница 39: ...ually from node to node To perform data I O to the virtual disks assign the virtual disks to a cluster node by performing the following steps 1 Open a Web browser 2 In the Address field type the storage system IP address The Navisphere Express console appears 3 Login with the user name and password that was created during the storage initialization 4 In the Manage menu a Click Disk Pools Create on...

Страница 40: ...l disk You can use snapshots to facilitate backups or to allow multiple hosts to access data without affecting the contents of the source virtual disk NOTICE To avoid data corruption do not access a snapshot from the same node from where you are accessing the source SAN Copy SAN Copy allows you to move data between storage systems without using host processor cycles or LAN bandwidth It can be used...

Страница 41: ...ent depending on the Windows Server operating system you use For more information on deploying your cluster with Windows Server 2003 operating systems see the Dell Failover Clusters with Microsoft Windows Server 2003 Installation and Troubleshooting Guide located on the Dell Support website at support dell com For more information on deploying your cluster with Windows Server 2008 operating system...

Страница 42: ...42 Preparing Your Systems for Clustering ...

Страница 43: ... the node to the storage system For more information see Cabling Your Cluster for Public and Private Networks on page 15 One of the cables is faulty Replace the faulty cable LUNs are not assigned to the hosts Verify that all LUNs are assigned to the hosts One of the nodes takes a long time to join the cluster OR One of the nodes fail to join the cluster The node to node network has failed due to a...

Страница 44: ...ster Service has not been started A cluster has not been formed on the system The system has just been booted and services are still starting Verify that the Cluster Service is running and that a cluster has been formed Use the Event Viewer and look for the following events logged by the Cluster Service Microsoft Cluster Service successfully formed a cluster on this node OR Microsoft Cluster Servi...

Страница 45: ...onfiguration is incorrect The node to node network and public network must be assigned static IP addresses on different subnets The private point to point network is disconnected Ensure that all systems are powered on so that the NICs in the private network are available Using Microsoft Windows NT 4 0 to remotely administer a Windows Server 2003 cluster generates error messages Normal Some resourc...

Страница 46: ...ll enabled blocking RPC communications between the nodes Configure the Internet Connection Firewall to allow communications that are required by the MSCS and the clustered applications or services For more information see Microsoft Knowledge Base article KB883398 at the Microsoft Support website at support microsoft com The disks on the shared cluster storage appear unreadable or uninitialized in ...

Страница 47: ...ck Cluster Services 4 In the Cluster Services window click the Recovery tab 5 Click the First Failure drop down arrow and select Restart the Service 6 Click the Second Failure drop down arrow and select Restart the service 7 Click OK For information on how to configure your cluster with the Windows Internet Connection Firewall enabled see Microsoft Base KB articles 258469 and 883398 at the Microso...

Страница 48: ... RPC communications between the nodes Configure the Internet Connection Firewall to allow communications that are required by the MSCS and the clustered applications or services For more information see Microsoft Knowledge Base article KB883398 at the Microsoft Support website at support microsoft com Table A 1 General Cluster Troubleshooting continued Problem Probable Cause Corrective Action ...

Страница 49: ...bout the cluster Use the form when you call for technical support Table B 1 Cluster Configuration Information Cluster Information Cluster Solution Cluster name and IP address Server type Installer Date installed Applications Location Notes Table B 2 Cluster Node Configuration Information Node Name Service Tag Number Public IP Address Private IP Address ...

Страница 50: ...uster Data Form Table B 3 Additional Network Information Additional Networks Table B 4 Storage Array Configuration Information Array Array Service Tag IP Address Number of Attached DAEs Virtual Disks 1 2 3 4 ...

Страница 51: ...t 0 SP B iSCSI port 1 __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ Static IP address host server Subnet Default Gateway Static IP address storage array Subnet Default Gateway __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ ___ __ __ __ _...

Страница 52: ...52 iSCSI Configuration Worksheet ...

Страница 53: ...d storage system 9 direct attached 9 18 iSCSI SAN attached 10 cluster storage requirements 8 clustering overview 5 D Dell EMC AX4 5i Cabling a two node cluster 19 Dell EMC AX4 5i Cabling a two node cluster 19 cabling the cluster nodes in an iSCSI SAN attached environment 23 cabling to one iSCSI SAN attached cluster 23 configuring 32 installing 32 direct attached cluster about 18 I iSCSI configurin...

Страница 54: ...twork 16 17 cabling the public network 16 O operating system Windows Server 2003 Enterprise Edition installing 29 P power supplies cabling 13 private network cabling 15 17 hardware components 17 hardware components and connections 17 public network cabling 15 T troubleshooting connecting to a cluster 44 shared storage subsystem 43 W warranty 11 ...

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