Windows Server 8 Beta includes new features that improve Hyper-V host scalability, virtual machine density, and high availability. Key enhancements include support for up to 320 logical processors, 4 TB of memory per host, 1,024 virtual CPUs and 1 TB of memory per virtual machine, and 1,024 active VMs per host. It also features improved live migration, storage migration, and failover clustering capabilities.

1. Windows Server 8 Beta - Pre Release Information Only
Dealing with planned and unplanned
failures in your Hyper-V Virtual
Infrastructure
SWUG Meet up – 16 August 2012
Daniel Mar
daniel@infrontconsulting.com
SP1 CTP 2
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2. Hyper-V host scale and scale-up workload support
Maximum limits
Improvement
System Resource Windows 2008 Windows Server Windows Server factor
R2 "8" Beta 2012 RTM
Logical processors on hardware 64 160 320 5
Host Physical memory 1 TB 2 TB 4 TB 4
Virtual processors per host 512 1,024 1,024 2
Virtual processors per virtual machine 4 32 64 16
Virtual Memory per virtual machine 64 GB 1 TB 1 TB 16
machine
Active virtual machines 384 1,024 1,024 2.7
Nodes 16 64 64 4
Cluster
Virtual machines 1,000 4,000 4,000 4
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3. Hypervisor Comparison
VMware vSphere
Windows Server
System Resource XenServer 6.0 5.0 Enterprise
2012
Plus
Logical processors on hardware 320 160 160
Host Physical memory 4TB 1TB 2TB
Virtual CPUs per Host 1,024 No limit 2,048
Virtual CPUs per VM 64 16 321
Memory per VM 1TB 128GB 1TB
Virtual
machine
Active VMs per Host 1,024 75-130 512
Guest NUMA Yes No Yes
Maximum Nodes 64 16 32
Cluster
Maximum VMs 4,000 No limit 3,000
1. vSphere 5.0 Enterprise Plus is the only edition that supports 32 vCPUs. All others support 8 vCPUs within a virtual machine.
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4. Maintaining your Hyper-V Virtual Infrastructure
Planned Host Unplanned
Maintenance Host failures
Failover
VM Mobility – Live Clustering HA VMs
Migration and Live
Storage Migration Hyper-V Replica
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5. History of Hyper-V VM Migrations
Windows 2008 Windows 2008 Windows 2012
R2
• Quick • Live • Shared
Migration Migration Nothing Live
• Quick Migration
Storage • SMB Live
Migration Migration
Hyper-V Failover • Live Storage
Cluster – 1 LUN Hyper-V Failover Migration
per VM (drive Cluster – Cluster
letters) Hyper-V
Shared Volumes Failover Cluster
(CSV) – CSV 2.0 5

6. VM and Storage Mobility Migration options
Live Migration with Shared SMB share based Live
Share nothing Live Migration
Storage Migration
Live Virtual Machine and
Live Storage Migration
Storage Migration (VSM)
There are so many more migration options available in Windows 2012.
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7. Test your understanding…
Scenario Is the VM mobile? If YES, what is the Is my VM highly
Migration Method? available?
Two hosts clustered – VM
stored on a CSV from an iSCSI YES Live Migration with YES
SAN Shared Storage
Two standalone hosts – VM
stored on local attached YES Share Nothing Live NO
storage Migration
Two hosts standalone – VM
SMB share Live NO
stored on standalone File YES
server SMB share Migration
Two hosts clustered – VM SMB share Live
stored on Scale out file server YES Migration YES
share
Standalone host and a 2 node Live Virtual Machine NO, when on the
standalone host
host cluster – VM stored on YES and Storage Migration YES, after the VM is
direct attached storage
(VSM) moved into the cluster 7

8. Planned VM Mobility
- Share Nothing Live Migration
- Live Storage Migration
DEMO

9. Live Migration Comparison
Windows Server VMware vSphere
Resource XenServer 6.0
2012 5.0 Enterprise Plus
VM Live Migration Yes Yes Yes
1GB Simultaneous Live Migrations Unlimited1 N/A 4
10GB Simultaneous Live Migrations Unlimited1 N/A 8
Live Storage Migration Yes No Yes2
Shared Nothing Live Migration Yes No No3
1. Within the technical capabilities of the networking hardware
2. Live Storage Migration (Storage vMotion) is available in Enterprise & Enterprise Plus editions of vSphere 5.0
3. Shared Nothing Live Migration will be available in vSphere 5.1
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10. Hyper-V Replica
New feature
• Replicates Hyper-V virtual machines from a
primary to a Replica site
Benefits
• Affordable in-box business continuity and
disaster recovery solution
• Failure recovery in minutes
• More secure replication across network
• No need for storage arrays
• No need for other software replication
technologies
• Automatic handling of live migration
• Simpler configuration and management
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11. Hyper-V Replica Deployment Scenarios
Deployment Use Cases
1. Head office to Remote branch office
or vice versa
2. Hoster - DR service for customers -
Company data center to Hoster data
center
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12. Hyper-V Replica complements Array Based Replication
Replication Replication Cost Management Performance
Method Provider
• Continuous
• Flexible Storage Asynchronous
• VM Granularity
Options Available Replication
• Open APIs provide
• Unlimited VM • RPO - 5-15 mins
extensibility,
Hyper-V Microsoft Replication included • RTO - 10-30 mins
interoperability and
Replica • Feature included with • Application Level
prevent vendor
the Windows Server Consistency
lock-in
2012 license • File Level
Consistency
NetApp, HP, Fujitsu, • High end replicating
IBM, HDS, FalconStor, storage • LUN-VM Layout • Synchronous
Storage Based
3Par, EMC, LSI, • Additional replication • Coordination with Replication
Replication
Compellent, EqualLogic software storage team • High Data Volumes
and more… • $$$$$

13. Hyper-V Replica – Test Failover
Site A Site B
• Non-disruptive testing of workload – zero downtime
• Test any recovery point
• Pre-configure isolated network

14. Hyper-V Replica – Planned Failover
1. Shutdown primary
Site B
2. Send last delta
Site A
3. Failover to replica
4. Reverse replication
• Testing DR or failover before disaster or planned maintenance
• Zero data loss but some downtime
• Efficient reverse replication

15. Hyper-V Replica – Unplanned Failover
Site A Site B • Only available if
primary site is
unresponsive
• Minor data loss
• No reverse replication
– Can be manually configured later

16. Hyper-V Replica – Replication with VM Mobility
Site A Site B
• Seamless VM migration on primary
• Migration of replica VM is also supported
• Works with live migration, storage and quick migration

17. Hyper-V Replica
- Setup a VM Replica
- Planned Failover
- Unplanned Failover
DEMO

18. Questions?
daniel@infrontconsulting.com
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19. Windows Server 8 Beta - Pre Release Information Only
Backup Slides
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20. SMB Transparent Failover
• Failover transparent to server application
• Zero downtime – small IO delay during failover
• Supports planned and unplanned
failovers
• HW/SW Maintenance Hyper-V
• HW/SW Failures
• Load Rebalancing
• Resilient for both file and directory fs1share fs1share
operations
• Requires:
File Server File Server
• Windows Failover Clusters Node A Node B
• Both server running application and file server File Server Cluster
cluster must be Windows Server 2012
• Shares enabled for ‘continuous availability’

21. SMB Scale-Out File Server
• Targeted for server app storage Hyper-V Cluster
(Up to 64 nodes)
• Example: Hyper-V and SQL Server
• Increase available bandwidth by adding
cluster nodes
• Key capabilities: Data Center Network
• Active/Active file shares (Ethernet, InfiniBand or combination)
• Fault tolerance with zero downtime File Server Cluster
• Fast failure recovery (Up to 4 nodes)
• Transparent CHKDSK Single Logical File Server (FSShare)
• Support for app consistent snapshots
Single File System Namespace
• Support for RDMA enabled networks
Cluster Shared Volumes
• Optimization for server apps
• Simple management

22. VSS for SMB File Shares
• Application consistent shadow Read from
Backup Server
copies for server application data
Shadow Copy
Share
stored on Windows Server 2012 G
file shares A Backup
File Share Shadow Copy Agent
• Backup and restore scenarios Backup Agent
E Request Shadow Copy
B Coordinate Shadow Volume Shadow Copy Service
Copy D
• Full integration with VSS Volume Shadow Copy Service Relay Create Shadow Copy F
Shadow
infrastructure Create Shadow Copy C Copy
VSS Providers
request
File Share Shadow Copy Provider
fsfoo fsfoo@t1
Data volume Shadow Copy
Hyper-V Host Server File Server