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Windows Server 2012 Hyper-V StorageCarlos Mayol y Oscar BonaquePremier Field Engineers (PFE’s)Microsoft

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Storage Live Migration

LM in WS2012 has multiple aspects

Failover Cluster Live Migration

Shared nothing Live Migration

Storage Live Migration

Only supported when using VHD/VHDX/AVHD/AVHDXPass-through disks are not supported

VM data files can be moved to the same or different locationsLive Storage migration without Virtual Machine Manager (VMM2012)Simultaneous Live storage migration (Customizable)

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Live Storage MigrationServ

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1.Disk reads and writes are to the source virtual hard disk when the migration is initiated

2.While reads and writes are still to the source, the disk contents are copiedto the new destination

3.After initial copy completes, reads and writes are mirrored to both sourceand destination

4.When the disks are synchronized, the virtual machine is switched over to the destination

5.The source virtual disks are deleted

Windows Server 2012 adds no downtime migration of VM Storage

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DEMO: Storage Live Migration

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SMB Multi-ChannelAggregates Network Bandwidth and provides fault toleranceRequires Windows 8 Client or Windows Server 2012

VSS Provider for remote SharesShadow copies of application data on WS2012 file sharesWS 2012 Backup does not support this functionality

SMB Transparent FailoverScale – Out HA File Servers with CSV volumes shares

SMB DirectNIC Adapter must support RDMARequires Windows 8 Client or Windows Server 2012

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Hyper-V over SMB FS ConfigurationsServ

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Requires a properly configured SMB file share on a WS2012 File Server and a virtual machine configured to use the file share to store its data files

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DEMO: VM over SMB ShareSMB 3.0

New Virtual Hard Disk Format

Native 4K Disk Support Take advantage of enhanced density and reliability

Data TrimmingUnmap support to release SAN space

Larger Block Sizes 32 MB for fixed and dynamic and 2 MB for differential disks

64TB VHDX Increased capacity, protection and alignment optimization

Can be managed using PowerShell

Metadata resiliency Logs updates to the VHDX metadata structuresServ

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• Dynamic or Diff Virtual disk are now 1MB aligned, less IO’s means more performance

• Now dynamic disk can be used on Production with similar performance

Virtual Dynamic Disk (VHDX)Serv

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• Convert-VHD: Converts the format version and type of virtual hard disk file

• Merge-VHD: Merges the virtual hard disks in a virtual hard disk chain

• Mount-VHD: Mounts a virtual hard disk• Optimize-VHD: Optimizes space

allocation in one or more dynamic or differencing virtual hard disks

Cmdlets Associated with VHDX-VHD Files

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DEMO: Exploring new VHDX

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Virtual Fiber Channel on VMsServ

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DSM

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MPIO

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Switch Fabric

SAN

Up to 4 VFC adapters

Each adapter is associated with a

virtual SAN

Each adapter connects with one or two WWNN\WWPN address pairsHA VMs require two to support mobility scenarios in the cluster

Merge Snapshots while VMs Running

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Hyper-V 2008 R2 .avhd is not merged into the .vhd until VM shutdown

Hyper-V 2012, changes in the .avhdx file are merged into the .vhdx file on the fly

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DEMO: Live merging

Offload Data Transfer (ODX) Serv

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ODX• Data transfer between intelligent

storage arrays• Token based

Benefits• Rapid virtual machine provisioning

and migration• Faster transfers on large files• Latency minimization• Less CPU and network usage• Performance not limited by network

throughput or server usage• Improved data center capacity and

scale• Automation

Restrictions• Requires Storage vendor support• Bitlocker volumes not supported• Only applies to SCSI attached

devices• Compressed or encrypted files not

supported

Questions?