This is the first session of the week focused entirely on the new features in Hyper-V 2012 R2, due out later this year. Hyper-V in Windows Server 2012 saw monumental changes from prior versions, which were needed to keep up with the competition. Hyper-V in WS 2012 R2 builds on the prior functionality with some big enhancements, just a year later.
- Windows Azure uses the stock Windows Server 2012 Hyper-V
- Complete virtual machine compatibility between on prem Hyper-V and Azure IaaS
Hyper-V 2012 R2
Generation 2 VMs
- Legacy free (no BIOS) but uses UEFI
- Many emulated devices removed
- Boots from virtual SCSI or synthetic network adapters
- Enables UEFI secure boot standard
- Supported Guest OS: 64-bit Windows 8, Windows Server 2012, 64-bit Windows 8.1, Windows Server 2012 R2
- You can run Gen1 and Gen2 VMs side by side
- Gen1 VMs are not going anywhere anytime soon
- No performance improvements on Gen2 VMs, except booting is 20% faster and OS install is about 50% faster.
- Big advantage is booting off a virtual SCSI or network controller instead of IDE device
- Zero touch activation of VMs
- Automatically activated according to the hosting environment
- Gets its activation information from the Hyper-V host
- Not tied to type of activation method (OEM, VL, etc.)
- The VM does not have the product key in it
- Only supported for Windows Server 2012 R2 VMs (no prior versions)
- Difference between generation 1 and generation 2 VMs: No ISA, no com ports, no PS/2 ports, no floppy, etc. Simplifies VM hardware configuration.
- Showed the ability to enable secure boot for VMs
- Enhanced virtual machine connection – Supports rich text copy and paste in and out of VMs. Cut and paste files in and out of VMs.
- VM console now supports audio redirection as well
- VM connect now uses remote desktop services, so you can do smart cards, folder redirection, plus USB support.
- Full support for these features on Windows 8.1 Hyper-V, and are enabled by default. Disabled by default on server for security, but can easily enable per-host.
- Live migrate virtual machine from Windows Server 2012 to Windows Server 2012 R2
- Includes shared nothing live migration
More new Features
- Online VHDX resize (expand, shrink, compact)
- Increase or decrease the size of virtual disks while the VM is running
- Live machine export (clone a running VM)
- VMs with snapshots and other settings can be migrated without intervention to 2012 R2 (no more draconian procedures)
- Live migration with compression – default option (1/3 faster than w/o in his demo)
- Live migration using RDMA (SMB Direct) – Uses less CPU than a standard Live Migration
- Faster live migration – 10Gb or less then use compression. Over 10Gb, use SMB/SMB Direct
Enhanced Linux Guest Support
- Full dynamic memory support
- Online backup with filesystem consistency (VSS-like functionality on Linux)
- Online VHDX resize
- New video driver
- Linux has and will continue to run very well on Hyper-V
- You can use any enterprise solution that backups up Hyper-V and get full Linux support automatically
- Microsoft claims they offer the most Linux support of any hypervisor, since the competition can’t do VSS-like Linux backups
- Microsoft releases the hypervisor integration pack with a GPL license to the open source community
- Storage QoS
- Ability to configure min/max IOPS on a per-VM basis
- Guest Clustering with shared virtual disks. No need for ISCSI, fibre channel SAN, or block storage. Can be done with SMB, or cluster in a box.
Hyper-V Replica Disaster Recovery
- Extended replication (tertiary copies)
- Replication frequency has 30 seconds, 5 minutes and 15 minute intervals
- Example: On-prem replicated to hoster, then host replicates it elsewhere
- Example: first hop within prem, then second hop to hoster/Azure