26 April 2016

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Hyper-V vs. VMware: Which Is Best?

Business Phone Service by Tom Collins

Virtualization remains one of the hottest trends in business IT. Gartner reports that over half of all server workloads are now virtualized. Whether your organization has already invested heavily in the cloud or is considering a first-time migration, it can be critical to consider the role of a hypervisor in your overall experience.

A hypervisor is computer software, firmware, or hardware that creates and runs virtual machines. The hypervisor presents virtual, or guest operating systems to virtual machines and manages the execution of these virtual operating platforms, which can consist of a variety of operating systems. The right hypervisor can ensure ease of use, flexible resource allocation, and minimal disruption to each of the operating systems in use.

Two of the most common choices for hypervisors include vSphere, a VMware product, and Hyper-V, by Microsoft. Join us as we review the pros, cons, and costs of Hyper-V and VMware, so you can decide which is best for you.

 

What Is Hyper-V?

Microsoft Hyper-V is designed to offer "enterprise-class virtualization" for organizations with a data center or hybrid cloud. This option is a common choice for organizations who want to virtualize workloads, build a private cloud, scale services through a public cloud, or combine all three.

Hyper-V is built into Windows Server, or can be installed as a standalone server, known as Hyper-V Server, both of which can ease the learning curve for virtualization administrators who already have knowledge and background with Microsoft products. It offers a unified set of integrated management tools, regardless of whether organizations are striving to migrate to physical servers, a private cloud, a public cloud, or a "hybrid" mixture of these three options.

Hyper-V Pros

  • Can deploy new virtual servers in minutes
  • Maintenance does not result in downtime
  • Simple live migrations
  • Easy backups
  • Comprehensive security through Windows Active Directory
  • Lower priced

Hyper-V Cons

What Is VMware vSphere?

VMware vSphere is a popular hypervisor choice for organizations hoping to achieve some degree of virtualization. Now on version 6.0, vSphere is highly configurable, which can make it an attractive choice for companies that are either going fully virtual or opting for a hybrid approach.

There are several different flavors of vSphere available, depending on organizational needs. vSphere Standard, Enterprise Plus, and Operations Management Enterprise Plus offer varying features and degrees of fault tolerance, allowing organizations to select the best coverage for their needs and growth goals.

vSphere Pros

  • Intuitive use
  • High-quality support availability
  • May be an optimal fit for major enterprises
  • Broad OS support
  • Offers access to governance capabilities
  • Transparent page sharing
  • Offers higher guests per host (512 vs. 384)

vSphere Cons

  • Free and trial versions do not offer full functionality
  • Reported steep learning curve

Colocation vs. Cloud Comparison Guide

Hyper-V and VMware Costs

Hyper-V and vSphere costs depend primarily on the number of processors and operating system environments (OSEs) managed. Licensing for Hyper-V ranges from free to $3,607, though organizations can pay significantly more depending on their processing and OS goals. Licensing for VSphere can range from $995 to $4,245, with additional fees for support, multi-site use, "Operations Management Acceleration," and more.

Both VMware and Hyper-V offer a free version. However, the free and trial versions of VMware are missing some functionality. In contrast, the free version of Hyper-V offers full functionality for individuals who want to give it a test drive.

vSphere vs. Hyper-V: Other Factors to Consider

1. Scalability

The scalability factor of Hyper-V slightly exceeds vSphere. The maximum potential of each factor is detailed in the table below:

 

  Resource Hyper-V (R2 2012) VMWare vSphere Hypervisor VMWare vSphere 5.5 Hypervisor
Host Logical Processors 320 320 320
Host Physical Memory 4TB 4TB 4TB
Host Virtual CPUs Per Host 2,048 4,096 4,096
VM Virtual CPUs Per VM 64 8 64
VM Memory Per VM 1TB 1TB 1TB
VM Active VMs Per Host 1,024 512 512
VM Guest NUMA Yes Yes Yes
Cluster Maximum Nodes 64 NA 32
Cluster Maximum VM 8,000 NA 4,000

Data Source: Microsoft

What if your workload is absolutely massive? VMware Enterprise Plus and Hyper-V both permit 64 virtual processors and 1 TB Ram in a single virtual machine.

2. Design Advantages and Disadvantages

ServerWatch highlights the following advantages for VMware and Hyper-V's design:

Hyper-V:

hypervdesign.png

Advantages

  • Hypervisor Layer or VMM Kernal doesn't require device drivers for each device.
  • Minimized attack surface since the Hpyervisor layer lacks APIs
  • Device drivers don't need to by hyperviser-aware.
  • Device drivers can be installed in OS running in "controlling layer."
  • Hypervisor layer requires less overhead for maintaining device drivers.
  • Any other server roles can be installed in controlling layer.
  • Requires less initialization time than VMware

Disadvantages

  • Controlling Layer requires an installed OS before Hypervisor can operate.
  • If controlling layer OS crashes, all VMs crash.
  • Controlling layer requires more overhead.
  • Security depends on the application of Microsoft security updates, which requires all VMS to be taken offline or moved to a different node to avoid downtime.

VMWare:

vmwaredes.png

Advantages:

  • No OS required to control all components of virtualization.
  • No security patches needed.

Disadvantages:

  • Only works on supported hardware.
  • Requires more initialization time.
  • Corrupted code injected in Hypervisor layer can cause delays.

3. Operating System Support

New guest operating systems that are supported by VMware include:

  • Oracle Unbreakable Enterprise Kernel Release 3 Quarterly Update 3
  • Asianux 4 SP4
  • Solaris 11.2
  • Ubuntu 12.04.5
  • Ubuntu 14.04.1
  • Oracle Linux 7
  • FreeBSD 9.3
  • Mac OS X 10.10

In addition to Windows operating systems, Hyper-V can support:

  • CentOS
  • Red Hat Enterprise Linux
  • Debian
  • Oracle Linux
  • SUSE
  • Ubuntu
  • FreeBSD

4. Performance

Academic research was performed to evaluate the performance of Hyper-V, VMware, and other solutions in a controlled laboratory setting, using methods of evaluation and testing guided by the scientific method. According to the authors of the resulting paper, "we conducted performance experiments using different scenarios on each virtualization approach supported by the latest versions of the mentioned hypervisors."

The results indicated that based on indluced performance factors, Hyper-V outperformed VMware. Full insight into the results of each individual test performed by the researchers, their resarch methods, and results can be viewed here.

5. Licensing Inclusions

TechNet reports that licensing support and inclusions for Hyper-V and VMware stacks up as following.

 
Microsoft Hyper-V
Windows Server 2012 R2
+ System Center 2012 R2 Datacenter Editions

VMware
vSphere 5.5 Enterprise Plus + vCenter Server 5.5
# of Physical CPUs per License Supported Limited Support With Microsoft, each Datacenter Edition license provides licensing for up to 2 physical CPUs per Host. Additional licenses can be “stacked” if more than 2 physical CPUs are present.

With VMware, a vSphere 5.5 Enterprise Plus license must be purchased for each physical CPU.
# of Managed OSE’s per License Unlimited Unlimited Both provide ability to manage an unlimited OSE per licensed Host.
# of Windows Server VM Licenses per Host Unlimited Not Supported With VMware, Windows Server VM licenses must still be purchased separately.

VMware includes licenses for an unlimited # of VMs running SUSE Linux Enterprise Server.
Includes Anti-virus / Anti-malware protection Yes Yes  
Includes full SQL Database Server licenses for management databases Yes – Up to 1,000 hosts and 25,000 VMs per management server. No – Must purchase additional database server licenses tfor more than 100 hosts and 3,000 VMs.  
Includes licensing for Enterprise Operations Monitoring and Management of hosts, guest VMs and application workloads running within VMs. Yes – Included in 2012 R2 No – Operations Monitoring and Management requires separate license.  
Includes licensing for Private Cloud Management capabilities – pooled resources, self-service, delegation, automation, elasticity, chargeback/showback Yes – Included in System Center 2012 R2 No – Private Cloud Management capabilities require additional cost of VMware vCloud Suite.  
Includes management tools for provisioning and managing VDI solutions for virtualized Windows desktops. Yes – Included in the RDS role of Windows Server 2012. No – VDI management requires additional cost of VMware Horizon View.  
Includes web-based management console Yes – Included in System Center 2012 App Controller. Yes – Included in vSphere Web Client.  

Data Source: TechNet

6. Storage and Networking

Storage Capabilities:

Capability Hyper-V (2012 R2) VMware vSphere VMware vSphere 5.5 Enterprise Plus
iSCSI/FC Support Yes Yes Yes
Network File System Support Yes (SMB 3.0) Yes (NFS) Yes (NFS)
Virtual Fiber Channel Yes Yes Yes
3rd Party Multipathing Yes No Yes (VAMP)
Native 4KB Disk Support Yes No No
Storage Virtualization Yes (Spaces) No Yes (vSAN)
Storage Tiering Yes No Yes

Data Source: Microsoft

Networking Capabilities:

Capability Hyper-V (2012 R2) VMware vSphere VMware vSphere 5.5 Enterprise Plus
Dynamic Virtual Machine Queue Yes NetQueue NetQueue
IPsec Task Offload Yes No No
SR-IOV with Live Migration Yes No No
Virtual Receive Side Scaling Yes Yes (VMXNet3) Yes (VMXNet3)

Data Source: Microsoft

For additional information, we recommend the full overview written by Petri.

The Bottom Line

Success in virtualization requires a strong knowledge of your business requirements, clear goals, and a hypervisor that facilitates ease of use. The popularity of both vSphere and Hyper-V speaks to the products' quality and broad user bases.

It can be natural to feel overwhelmed about selecting a hypervisor, which can be a decision that has an impact on your overall virtualization experience. Atlantech Online has extensive experience helping organizations of all sizes and experience levels achieve their virtualization goals. To speak with a virtualization expert today, click here.

 





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t-tom-collins

About the author:

Tom Collins (Twitter, LinkedIn) - is the Director of Enterprise Sales & Marketing for Atlantech Online. He has over 20 years of professional experience in the Internet Service Provider industry and is known for translating technology into positive results for business. A native of Washington, DC, a graduate from University of Maryland (degrees in Government & Politics and Secondary Education), Tom is also a five-time Ironman finisher.

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