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Module 2: Concepts of Server Clusters
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Overview
Introduction to Server Clusters
Key Concepts of a Server Cluster
Choosing a Server Cluster Configuration
Applications and Services on Server Clusters
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Introduction to Server Clusters
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Clustering Techniques
Shared Everything Model
Mirrored Servers
Shared Nothing Model
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Availability and Scalability
Availability
Cluster Service Improves Availability of Applications and Services
Scalability
Cluster Service Improves Scalability by Adding More Computers to the Cluster
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Multimedia: Microsoft Windows 2000 Cluster Service
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Key Concepts of a Server Cluster
ClientClientPrivateNetworkPrivateNetwork
Server Cluster
Quorum
Disk 1
A Group of Resources
VirtualServerVirtualServer
Disk 1
Print SharePrint Share
File ShareFile Share
PublicNetworkPublicNetwork
Node ANode A
Node BNode B
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Cluster Disks
Node ANode A
Node BNode BDisk 4
Disk 3
Disk 2
Disk 1
Quorum
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Quorum Resource
Data Storage
Arbitration
Quorum Ownership
Updates for Nodes Coming Online
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Cluster Communications
Private Network
Public Network
Mixed Network
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Groups and Resources
\\Server110.0.0.4File SharePrinter Share
\\Server110.0.0.4File SharePrinter Share
\\Cluster110.0.0.3Logical Disk
\\Cluster110.0.0.3Logical Disk
\\Server210.0.0.6Application
\\Server210.0.0.6Application
Node ANode A
Node BNode B
Server ClusterServer Cluster
Disk 1
Disk 3
Disk 2
LogicalDiskGroup 1
Group 2
Group 3
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Resource Dependencies
FS-1File Share
FS-1File Share
PD-1Physical Disk
PD-1Physical Disk
IP-1IP Address
IP-1IP Address
NN-1Network Name
NN-1Network Name
FS-1File Share
FS-1File Share
IP-1IP Address
IP-1IP Address
NN-1Network Name
NN-1Network Name
PD-1Physical Disk
PD-1Physical Disk
RecommendedVertical
Dependency
Not RecommendedForking Dependency
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Virtual Servers
Client Access to Virtual Servers
Virtual Server Environment
Virtual Server Naming
Named Pipe Remapping
Registry Replication
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Virtual Server Name Resolution
Node BNode B
Group 1Group 1Node ANode A
WINS\\VirtualServer = 10.0.0.25
WINS\\VirtualServer = 10.0.0.25
DNS\\VirtualServer.nwtraders.msft = 10.0.0.25
DNS\\VirtualServer.nwtraders.msft = 10.0.0.25
Active DirectoryShare = \\VirtualServer\Share
orShare = \\VirtualServer.mwtraders.msft
Active DirectoryShare = \\VirtualServer\Share
orShare = \\VirtualServer.mwtraders.msft
\\VirtualServer\\VirtualServer.nwtraders.msft\\10.0.0.25
\\VirtualServer\\VirtualServer.nwtraders.msft\\10.0.0.25
Disk 1
Quorum
Disk 1
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Failover and Failback
Node ANode A
Node BNode B
FailoverFailover
Node ANode A
Node BNode B
FailbackFailback
Group 1Group 1
Group 1Group 1
Quorum
Disk 1
Disk 1
Disk 1
Quorum
Disk 1
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Demonstration: Cluster Concepts
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Choosing a Server Cluster Configuration
Virtual ServerVirtual ServerVirtual ServerVirtual Server Failover CapabilityFailover CapabilityFailover CapabilityFailover Capability PerformancePerformanceConsiderationsConsiderationsPerformancePerformance
ConsiderationsConsiderationsClusterCluster
ConfigurationConfigurationClusterCluster
ConfigurationConfiguration
No Cluster NeededNo Cluster Needed
Single NodeVirtual ServerSingle Node
Virtual Server
Active/PassiveActive/Passive
Active/ActiveActive/Active
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Active/Passive Configuration
Quorum
Disk 1
Node ANode A Node BNode B
\\ACCOUNTING
Group 1Group 1
Node A manages virtualserver \\ACCOUNTING.Node B is configured as ahot spare and will takeownership of \\accounting if Node A goes offline.
Cluster ServiceCluster Service
Disk 1
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Active/Active Configuration
Cluster ServiceCluster Service
Disk 2
Quorum
Disk 1Node ANode A
\\ENGINEERING
Group 1Group 1
Capacity tofail over Group 2
Capacity tofail over Group 2
\\ACCOUNTING
Group 2Group 2Capacity tofail over Group 1
Capacity tofail over Group 1
Node BNode B
Disk 1
Disk 2
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Hybrid Configuration
Quorum
Disk 1
Node ANode A
Node A providingDNS outsidethe cluster
Node A providingDNS outsidethe cluster
Node B providingFile/Print outsidethe cluster
Node B providingFile/Print outsidethe cluster
\\ENGINEERING
Group 1Group 1
Capacity tofail over \\engineering
Capacity tofail over \\engineering
Node BNode B
Disk 1
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Single Node Virtual Server
Not Shared
Clients can accessany virtual server in the cluster.
Clients can accessany virtual server in the cluster.
Disk 2
Quorum
Disk 1Node ANode A
Group 2Group 2
Cluster ServiceCluster Service
Group 1Group 1Disk 1
Disk 2
\\ENGINEERING
\\ACCOUNTING
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Applications and Services on Server Clusters
Applications
Services
File and Print Shares
Identifying Performance Limitations
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Applications
Cluster-Aware Applications
Cluster-Unaware Applications
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Services
DFS
DHCP
WINS
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File and Print Shares
ClientClient
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Identifying Performance Limitations
Node ANode A
Quorum
Disk 1
Node BNode B
Exchange2000
Exchange2000
File / PrintFile / Print
Group 1Group 1
Group 2Group 2
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Review
Introduction to Server Clusters
Key Concepts of a Server Cluster
Choosing a Server Cluster Configuration
Applications and Services on Server Clusters