1. 4/11/2017
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Failover Clustering: What's new in Windows Server 2012 R2
4/11/2017
DCIM-B354
Failover Clustering: What's new in Windows Server 2012 R2
John Marlin
Senior Support Escalation Engineer
Microsoft
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Session Objectives and Takeaways
TechReady 14
4/11/2017
Session Objectives and Takeaways
Overview new feature enhancements coming in Windows Server 2012 R2 for Failover Clustering and availability
Roadmap of incremental changes from Windows Server 2012
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. Guest Clustering with Shared Virtual Disks
Guest Clustering with commodity storage
Sharing VHDX files provides shared storage for Hyper-V Failover Clustering
Maintains separation between infrastructure and tenants
Cluster Shared Volumes (CSV) on block storage
Scale-Out File Server for file based storage
Block Storage
File Based Storage
Virtual SAS
VM presented a shared virtual SAS disk
Appears as shared SAS disk to VM
Used for data disk only
VHDX
VHDX

5. Guest Clustering
Guest Clustering shared storage deployment options with Windows Server 2012 R2:
Windows Server 2012
Windows Server 2012 R2
Fibre Channel P
iSCSI
File (SMB)
Shared VHDX

6. Creating Shared VHDX Example
Example of creating and attaching a shared VHDX to two existing VMs
PS C:\> New-VHD -Path C:\ClusterStorage\Volume1\Shared.VHDX -Fixed -SizeBytes 30GB
PS C:\> Add-VMHardDiskDrive -VMName Node1 -Path C:\ClusterStorage\Volume1\Shared.VHDX -ShareVirtualDisk
PS C:\> Add-VMHardDiskDrive -VMName Node2 -Path C:\ClusterStorage\Volume1\Shared.VHDX -ShareVirtualDisk
SCVMM
Hyper-V VM Settings

7. Shared VHDX
Technet

8. VM Drain on Shutdown VMs live migrated to another node during shutdown
Ensures reboot / shutdown does not incur downtime to VMs for unknowing admin
VMs moved to “Best Available Node”
Most free memory
Honors VM prioritization
Enabled/Disabled via the DrainOnShutdown cluster common property
Recommended
Still recommended to drain nodes before shutdown
Technet

9. VM Component Health Detection
Health Monitoring
Component level VM network health detection
Media sense loss detection of network disconnects
Recovery
Live migrates VMs off hosts with no external network connectivity for the VM
Verifies destination node has the network available
Configurable per network
Live migration
Blog

10. Optimized CSV placement policies
Optimized failover placement policies to spread CSV ownership across the cluster
Ensures CSV volume ownership is distributed across the cluster
Placement Scenarios:
CSV Failover
Node rejoining the cluster
New node added to the cluster
Cold start of cluster
SMB Client
\\SOFS\Share1
\\SOFS\Share2
Scale-out File Server
File Server 1
File Server 2
Share1
Share2
Share1
Share2
Technet

11. Increased CSV Resiliency
Isolated SMB Instances
Separation for improved resiliency
Independent processes and queues for regular SMB client traffic and inter-node SMB traffic
Improves scale of inter-node SMB traffic between CSV nodes
Multiple SMB Server instances per Node
Default Instance – Handles incoming traffic from SMB clients accessing regular file shares
CSV Instance – Handles only inter-node CSV traffic (metadata access or redirected traffic)
SMB Client
Node 1
Node 2
SMB Server Default Instance
SMB Server Default Instance
SMB Server CSV Instance
SMB Server CSV Instance
SMB Client
SMB Client

12. CSV Dependency Health Detection
Cluster Shared Volumes (CSV) health monitoring of the Server Service
CSV leverages SMB as a transport protocol for orchestrating and forwarding I/O between nodes
If the Server Service becomes unhealthy on a node, CSV will designate a new coordinator node
Cluster Shared Volumes
Server Service
Technet

13. Cluster Shared Volumes (CSV) Cache
Scalability
CSV cache supports allocating larger amounts of memory (up to 80% of total memory)
Most interesting for Scale-out File Servers
Defaults
Physical Disk resource EnableBlockCache enabled by default
Still need to enable via BlockCacheSize to allocate memory
Recommended
Recommended to enable CSV Cache for all Hyper-V and Scale-out File Server deployments
Greater allocation for Scale-out File Server as they are not memory bound
Blog

14. Diagnosability
Deployment Logging
Improved logging when creating a cluster and adding a node
Enables pinpointing root cause quickly and easily
State Logging
Increased logging to Operational channel for cluster resource state changes
For example: When cluster resources move from one node to another

15. Cluster Shared Volumes Diagnosability
CSV State
Displays on a per-node basis the CSV I/O mode and the reason if in a redirected mode
Direct I/O, Block level redirected mode, File system level redirected mode
Get-ClusterSharedVolumeState PowerShell cmdlet

16. Diagnosability

17. Cluster Shared Volumes Interoperability
ReFS with CSV
Tiered Spaces with CSV
Spaces Write-Back Caching with CSV
Parity Spaces with CSV
Dedup with CSV
Technet

18. Node Health Detection over Network
Cluster Health monitoring:
Nodes exchange heartbeats every 1 second (configurable)
Nodes considered down if it does not respond to 5 heartbeats (configurable)
Default settings are fairly aggressive to deliver the highest levels of availability
However are fully configurable to meet your business needs
For a Hyper-V deployment slightly more relaxed settings may make sense
Traditionally the definition of down, is when clients cannot connect to an app in the VM
In general, TCP defines recoverable network errors for applications
Recommended for cluster heartbeats not to exceed 20 seconds
Greater resiliency to transient network failures with Windows Server 2012 R2
Heartbeat thresholds increased by default for Hyper-V Clusters
Cluster heartbeating improved for increased resiliency to packet loss
Cluster Property
Default
Hyper-V Default
SameSubnetThreshold 5 10
CrossSubnetThreshold 20
Blog
TechEd 2013

19. Cluster Global Updates
For state change or database update nodes must be notified and updated
Leverages clusters Global Update Manager (GUM)
Two GUM modes now in Windows Server 2012 R2
Majority
Greater than 50% of nodes must acknowledge before considered committed
Toggled on by default for Hyper-V clusters
Enables the cluster to move forward if there is a node with latency
All
All nodes must acknowledge before considered committed
Default mode for all other workloads (SQL, Exchange, etc…)
Configurable with DatabaseReadWriteMode cluster common property
Cluster
Update
Technet

20. Network Validation Improvements
Network validation improved from simple PING to using NetFT
Verifies port 3343 and full cluster network connectivity requirements
Provides better diagnosability and pre-identifies cluster configuration problems

21. Cluster Dashboard New Cluster Dashboard for Status at a Glance
Focused at multi-cluster management

22. Dynamic Witness
Node
1 / 1
Node
1 / 1
Node
1 / 1
Witness vote dynamically/automatically adjusted based on cluster membership with dynamic quorum
Odd node votes (3) + no witness vote (0) = 3
Even node votes (2) + witness vote (1) = 3
Automatic functionality based on WitnessDynamicWeight property.
Disk Witness
1 / 0
New Recommendation
Always configure a witness with Windows Server 2012 R2
Clustering will determine when it is best to use the Witness
Configure Disk Witness if shared storage, otherwise FSW

23. Dynamic Witness

24. Intuitive Quorum Configuration UI
Node vote weights and dynamic quorum status easy & quick to view
Removed legacy concepts of ‘quorum modes’
Node Majority
Node and Disk Majority
Node and File Share Witness Majority
Failover Cluster Manager
Validate

25. Tie Breaker Cluster will survive simultaneous 50% loss of votes
Balanced multi-site clusters with complete site partition
One site automatically elected to win
Site without LowerQuorumPriorityNodeID cluster common property wins
Nodes in the other site drop out of the cluster
Cluster
Site1
Site2

26. Force Quorum Resiliency
Cluster detects partitions after a manual ForceQuorum
ForceQuorum’d partition is deemed authoritative
Partitioned nodes restarted and re-joined
Cluster brought back into a single view of membership
Cluster
Manual Override with ForceQuorum
Site1
Site2
Nodes Restarted
When Site2 partition detected

27. Reducing Cluster Dependencies
Active Directory-detached cluster Network Names
Enables creating a cluster without computer objects
New-Cluster –AdministrativeAccessPoint DNS
Simplifies cluster deployments
Best fit for SQL Server Clusters
Flexibility to create clusters with or without Active Directory integration
Still required that Nodes are domain joined
Active Directory
CNO
VCO
Cluster
Technet

28. Considerations with AD-detached Clusters
What to consider when choosing a model
No computer objects, means no Kerberos authentication to the name
NTLM only client authentication against cluster names
Intra-cluster authentication still leverages Kerberos
Role
Position
Notes
MSMQ Clusters
Not Supported
MSMQ stores properties in AD
File Server Clusters
Not Recommended
Kerberos for SMB preferred
Hyper-V Clusters
No live migration support
SQL Server Clusters
Supported
Best fit if using SQL Authentication

29. SQL Server 2014 on Cluster Shared Volumes
SQL Server 2014 Failover Cluster Instance now supported on Windows Server 2012 R2 Cluster Shared Volumes (DCIM-B364)
Consolidation
Simplified storage management with consolidation of multiple instances onto a single LUN
Better capacity planning and storage utilization
Addresses drive letter limitations allowing more than 24 SQL instances on a single cluster
Availability
Databases can be moved without requiring any drive ownership changes
Faster Failover times with no dismounting and remounting of volumes required
Increased resiliency to storage faults with CSV I/O redirection
Chkdsk integration for file system correction with zero downtime
Performance
CSV block level read-only cache for unbuffered I/O to SQL databases

30. Failover Clusters on Windows Azure
TechReady 18
4/11/2017
Failover Clusters on Windows Azure
SQL Server Availability Groups are now supported on an Azure VM
Azure has no shared storage, so clustering requires data replication
Public Cloud
Hybrid Cloud
Azure
Azure
SQL AG Secondary
SQL AG Primary
SQL AG Secondary
Private
SQL AG Primary
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

31. Hyper-V Replica Improvements
SiteC
Hyper-V Recovery Manager
Configurable Replication Frequencies
30s, 5m, or 15m replication frequencies
Variable Recovery Point Objective (RPO) for metro vs. geographically dispersed
SiteB
Multiple Replica’s
Near site and offsite Replication
Second hop can be equal to or greater replication frequencies than first hop
Management
Windows Azure Hyper-V Recovery Manager (HRM) to manage datacenter level failover
Site-to-site failover management at scale
SiteA
Technet

32. ApplicationHA for Microsoft Hyper-V
Recovery or Proactive based remediation
Recovery – app restart, VM restart, failover, image recovery based on failures
Proactive – migrate based on trends toward service loss; workload close to exceeding capacity
Customizable recovery behavior
App or VM restart limit
In-guest remediation only - Enable/Disable App Heartbeat
Turn off remediation during planned maintenance - Enter/Exit Maintenance mode
Application Restart
Virtual Machine Restart
Virtual Machine Failover
Virtual Machine Migrate
Download the whitepaper at

33. In Review: Session Objectives And Takeaways
4/11/2017
In Review: Session Objectives And Takeaways
Flexibility
Guest Clusters with shared VHDX files
AD agnostic clusters without associated computer objects
Reliability
NIC health detection and VM failover
Dynamic Witness and survival of simultaneous 50% node loss
SMB isolated instances and Server Service health detection
Interoperability
CSV compatibility with Tiered Spaces, Parity Spaces, and Dedup
Windows IT Pro
Technet
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

34. Related content Breakout Sessions Labs
4/11/2017
Related content
Breakout Sessions
DCIM-IL308 Windows Server 2012 R2: Introduction to Failover Clustering with Hyper-V (repeats on May 13 at 1:30 pm and May 13 at 5 pm)
DCIM-IL308-R Windows Server 2012 R2: Introduction to Failover Clustering with Hyper-V (repeated from May 12 at 3pm)
DCIM-IL308-RR Windows Server 2012 R2: Introduction to Failover Clustering with Hyper-V (repeated from May 12 at 3pm)
DCIM-H321 Windows Server 2012 R2: Introduction to Failover Clustering with Hyper-V
DCIM-B327 Cluster-in-a-Box Using Windows Server 2012 R2: Solutions and Applications
DCIM-B337 File Server Networking for a Private Cloud Storage Infrastructure in Windows Server 2012 R2
DCIM-B349 Software-Defined Storage in Windows Server 2012 R2 and Microsoft System Center 2012 R2
DCIM-B364 Step-by-step to Deploying Microsoft SQL Server 2014 with Cluster Shared Volumes
Labs
DCIM-IL200 Build Your Storage Infrastructure with Windows Server 2012 R2 (repeats on May 14 at 5 pm)
DCIM-IL200-R Build Your Storage Infrastructure with Windows Server 2012 R2 (repeated from May 14 at 8:30 am)
DCIM-H205 Build Your Storage Infrastructure with Windows Server 2012 R2
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

35. Come Visit Us in the Microsoft Solutions Experience!
For More Information
Windows Server 2012 R2
Windows Server
System Center
System Center 2012 R2
Azure Pack
cloud/products/windows-azure-pack
Microsoft Azure
Come Visit Us in the Microsoft Solutions Experience!
Look for Datacenter and Infrastructure Management TechExpo Level 1 Hall CD

36. Resources Learning TechNet msdn http://channel9.msdn.com/Events/TechEd
4/11/2017
Resources
Sessions on Demand
Learning
Microsoft Certification & Training Resources
TechNet
Resources for IT Professionals
msdn
Resources for Developers
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

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4/11/2017
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© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

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4/11/2017
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© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

39. 4/11/2017
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.