Upload
aubrey-cain
View
215
Download
0
Tags:
Embed Size (px)
Citation preview
High availability with server 2008Server 2008 Network Load BalancingSetting up server 2008 clusterServer 2008 failover cluster capabilitiesCluster 2008 quorum modelStretched clusterMigration to server 2008 ClusterQ & ASummary
Support for IPV6Multiple Dedicated IP AddressesSupports rolling upgrade from Windows 2003 to Windows 2008.Supports for Unattended NLB InstallationSupports for NLB in server Core
Integrated Configuration Validation ToolStreamlined Setup & Easy ManagementNew HA Role WizardImproved SecurityEnhanced Quorum ModelNetwork Enhancements & Stretched Clusters
Testing Tool Built into the ProductCatch Hardware Configuration ProblemsRuns each time a Cluster is BuiltCan be used after the Cluster is up for diagnosticsReplace the Cluster HCL in server 2008
OS BinaryOS BinaryConsistencConsistenc
yy
ArchitectuArchitecturere
ConfigurationConfiguration
Correct and Same OS version Same Hot fix and Service Pack level
Same CPU architectureSame CPU architecture
Consistent Domain membershipConsistent Domain membership
Analysis of unsigned driversAnalysis of unsigned drivers
Storage HBA’s and Networking Storage HBA’s and Networking NIC’sNIC’s
DevicesDevices
InfrastructureInfrastructure
StorageStorage
NetworkNetwork
Shared Storage Persistent Shared Storage Persistent Reservation functionality and Reservation functionality and compliancecompliance
Disk I/O latenciesDisk I/O latencies
Each NIC has different IP addressEach NIC has different IP addressNetwork I/O latenciesNetwork I/O latencies
Failover simulationFailover simulationFunctionalityFunctionality
Inter-Cluster CommunicationInter-Cluster Communication
Shared disks accessible from all machines and uniquely identifiable
The Validate tool is the 1The Validate tool is the 1stst menu step menu step
Setup is simplified and IntuitiveSetup is simplified and Intuitive
Create a 16 node cluster in one stepCreate a 16 node cluster in one step
SimpleSimple
ValidationValidation
FastFast
Majority Based Cluster MembershipFully Configurable who gets Voted
No Quorum DependencyIn case of quorum disk failure no Cluster failure
New Hybrid Model A combination of legacy MNS and Shared Disk Quorum
Majority of Nodes with the Witness based QuorumNo Single Point of failureNo Single Point of failurecan survive loss of the Quorum Diskcan survive loss of the Quorum Disk
New majority based quorum model
Majority of Nodes based quorum
Disk is optional witness to have a vote in deciding majority
3 total votes, with 2 needed for majority
So the Cluster can survive the loss of any 1 vote
SAN
Node 1 Node 2
Shared Storage Shared Storage Device gets 1 Device gets 1
votevote
VoteVoteVoteVote
VoteVote
Each node Each node counts as 1 counts as 1
votevote
Only Nodes get votes3+ Node votes without Shared Storage vote
Majority of votes needed to operate cluster
No shared disk vote
Node 3Node 1 Node 2
Replicated Storage Devices
Vote
Vote
Vote
Only Disk gets a vote
Nodes have no votes
Quorum disk is the master
Cluster stays up even if only 1 node can talk to the disk
Achieves same behavior as legacy quorum model
SAN
Node 1 Node 2
Shared Shared Storage Storage Device is Device is mastermaster
VoteVote
File Share Witness allows a 2-node cluster with no shared disk
Majority of Nodes + Witness based quorum
Excellent solution for GeoClusters
Witness could reside at a 3rd Site
Single file server could serve as the Witness for multiple clusters
Node 1 Node 2
File Share on an File Share on an independent independent
serverserver
VoteVoteVoteVote
WitnesWitnesss
Each node Each node counts as 1 counts as 1
votevote
No More Cluster Service User AccountThe Cluster runs with Local System Account with low privilegesNo Account Password ManagementMore Resilient for Configuration Issues
Simplified Setup with HA Role WizardIntegrated with Windows Explorer
Create Share like a Standalone Server
Fast Failover Major Performance improvement in brining the File Server resource online and offlineMinimum downtime for large amount of file shares
Tight integration of Hyper-V with Clustering
Wizards for creating highly available VM’sNew resource type to enable Quick Migrations
No more clunky scripts
Cluster is available with Window CoreSupport for : File Services (include DFS) , Print, DHCP, WINS and VirtualizationLess Serviceability that is more availabilityNo Graphic User Interface
Managed Locally using the Cluster.exe CLIManaged Remotely using the Cluster MMC
Install UsingStart / w ocsetup FailoverCluster-Core
Integrated with new Server 2008 TCP/IP StackFull IPv6 Support
Native IPv6 support for client access, native and tunnels Inter-node communication with IPv6
IPSec improvements for quick failoverDHCP Support for IPv4 Resources
Obtain cluster IP address from a DHCP serverRelieves management pain of static IP’s
But businesses are now demanding But businesses are now demanding more!more!
Stretching Stretching Nodes across Nodes across the river used the river used to be good to be good enough…enough…
No More Single-Subnet LimitationAllow cluster nodes to communicate across network routers
No more having to connect nodes with VLANs!
Configurable Heartbeat TimeoutsIncrease to Extend Geographically Dispersed Clusters over greater distances
Decrease to detect failures faster and take recovery actions for quicker failover
Exchange CCR Exchange CCR Replication Replication MechanismMechanism
Site ASite A Site BSite BWANWAN
Site CSite C
SANSAN SANSAN
\\Foo\Cluster1Complete resiliency and automatic recovery from the loss of any 1 site
File Share File Share WitnessWitness
Cluster Migration ToolWill assist migration of a cluster configurationfrom one cluster to anotherCopies resources and cluster configurations from one cluster to another
No Mixed Version CompatibilityServer 2008 node and Win2003 node can not be in the same cluster at the same time
No rolling upgrades
All nodes running Windows Server 2003
Group owned by Node 1 hosting a IP Address, Network Name, Physical Disk, and File Share resources
SAN
Node 1 Node 2
Windows Windows Server Server 20032003
Single ClusterSingle Cluster
IPIPNameNameDiskDisk
File ShareFile Share
Evict Node 2 from the Windows 2003 cluster
Perform clean install of Server 2008 on Node 2
Create an independent single node cluster with a new Cluster Name
SAN
Node 1 Node 2
LonghorLonghornn
20032003
Two separate ClustersTwo separate Clusters
IPIPNameNameDiskDisk
File ShareFile Share
Run the Cluster Migration Wizard on Node 2
Designate Node 2 as target and Node 1 as source
Perform a group by group copy of resources
Groups are created in an Offline state
SAN
Node 1 Node 2
ResourcesResourcesOnlineOnline
IPIPNameNameDiskDisk
File ShareFile Share
IPIPNameNameDiskDisk
File ShareFile ShareResourcesResources
OfflineOffline
Longhorn Cluster is pre-staged and ready for migration
Bring group Offline on Node 1
Bring group Online on Node 2
SAN
Node 1 Node 2
ResourcesResourcesOfflineOffline
IPIPNameNameDiskDisk
File ShareFile Share
IPIPNameNameDiskDisk
File ShareFile Share
ResourcesResourcesOnlineOnline
Install Server 2008 on Node 1
Join Node 1 to the existing cluster with Node 2
Resources can now be failed back and forth
Migration is complete!
SAN
Node 1 Node 2
IPIPNameNameDiskDisk
File ShareFile ShareResourcesResources
OnlineOnline
Single ClusterSingle Cluster
© 2007 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only.MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, IN THIS SUMMARY.
High availability with server 2008Server 2008 Network Load BalancingSetting up server 2008 clusterServer 2008 failover cluster capabilitiesCluster 2008 quorum modelStretched clusterMigration to server 2008 Cluster