Kernel-based Virtual Machine (KVM) vs. Nutanix AHV

KVM is the best solution in the case you need to test and turn up any virtual environment with limited vCPU/RAM resources. The obvious area of its use is a network environment when we want to avoid being tied to one type of hardware/vendor and being able to swap from one instance to another with no downtimes. The use of a vSwitch (that supports VLAN tagging) is a significant bonus for network engineers that some other hypervisors do not provide.

Incentivized

I think Nutanix AOS is a great product and, I would recommend it to anyone. The only reason I did not give it a 10 out of 10 is because I don't do that for any product. Every product has room for improvement.

• KVM is really good at providing fast and reliable virtualization for Linux guests
• Since KVM is a kernel module, every VM is a Linux process which can be managed by Linux system tools
• KVM integrates very well with the management framework libvirt, which is why KVM can be integrated in automation tools as well

Incentivized

• One component to support both compute and storage needs for virtualization.
• Easy expandable as business needs arise both at the node level and larger with blocks.
• Well outlined interface with good historical data.
• API tools are available to obtain logging information from Nutanix that can be used with other monitoring tools such as Splunk.

Incentivized

• KVM itself doesn't ship with a management interface
• KVM itself is a bit complicated to handle
• KVM needs Qemu to virtualize Windows guests

Incentivized

• Nutanix has a huge learning curve. We purchased the on-line training course when we moved to the platform and it was literally weeks of instruction. It was so extensive, in fact, that we ran out of time to complete it before the test.
• Operations that cannot be done from the browser require running commands from a terminal emulator; perhaps owing to the newness of the platform, documentation is not robust. I highly recommend you buy the tech support.
• Software updates are sometimes rushed to release. I've gotten to where I wait at least a few weeks after release before installing them, as I've run into significant issues with buggy software. Such installations have required time-consuming tech support calls to resolve.
• While the promise of perpetual VM uptime is being fulfilled, the dashboard frequently reports issues that need to be resolved.
• Because of significant hardware redundancy, the cost per byte of storage capacity is high.

Incentivized

We made a huge financial investment with this platform (four clusters, all-flash storage array), so we're in it for the long haul. Luckily it's a beast. I've had to use support more than any other platform I've administered, but the help has been very good. Nutanix continues to add features and innovations which increase the ROI

Incentivized

It does the job and stays out of the way. The specifics of usability relies on the implementation, but with things like Icarus and libvirt, things are standardizing nicely.

Incentivized

Nutanix Prism Element and Prism Central are easy-to-use HTML5-based web consoles. The layout makes sense; you're only a few clicks away from getting to where you need to be. The AHV hypervisor is integrated into the platform for a fast and seamless experience. Rich data on VM metrics is also available.

Incentivized

Due to the cool DFS architecture, Nutanix has good read performance for loads. In general, everything works well. We only ran into problems with very specific workloads that did not allow multithreading. It is also worth noting that loads should be tuned according to best practices for best performance, which is not always an easy task.

Incentivized

Nutanix [AOS] is a leader in the HCI industry and it becomes evident after deploying the software. The solution runs effortlessly and can scale seamlessly. We ran the Nutanix solution on Lenovo Servers and since Lenovo has a close working relationship with Nutanix, you can procure the Nutanix software directly from Lenovo as part of your Lenovo HCI solution. The advantage of going this route is that the hardware has been tested and verified by Lenovo that it is thus certified for Nutanix. The support is then also directly with Lenovo for both hardware and software.

Incentivized

It is a very reliable solution that can be used for x86 architecture virtualization with low overhead. It is a free and open source software. Easy to use withOpenStack.

Incentivized

We looked at both Simplivity and Cisco HyperFlex. Both are pretty good in their own right. Simplivity was very 'efficient' in the way they handled data, but we didn't like the idea of a propitiatory hardware card. Cisco's HyperFlex was our second choice, but we were so impressed with what Nutanix had done for us already, that we were already leaning toward that.

Incentivized

• Fast provisioning of new servers.
• Huge drop of the cost of servers compared to bare metal.
• Easy upgrades of resources, sometimes now even requiring a server restart.

Incentivized

• Nutanix Beam helps enable enterprises to take control of their total cloud spend with automated cost governance policies. Beam provides unified visibility into public and private cloud spending, including clusters, VMs, and other services.
• Lower administrative overhead, increased employee productivity, and costs savings.
• Nutanix AHV is also generally free to use, which can benefit organizations with budget constraints.

Incentivized