Firecracker vs. Hyper-V

While deploying workloads in lightweight microVMs presents a couple of perks, Firecracker may not be the best software to handle this. Startup times are slow and scalability is quite limited because of the jailer and virtualization barriers. We have had security breaches on isolated EC2 instances while using Firecracker. It however has a silver lining by improving how serverless functions in container ecosystems are run with their VMMs.

Incentivized

Hyper-V is well suited to virtualizing low production server count environments without WAN replication or failover on discrete host hardware. It starts to be less competitive in more enterprise environments where WAN replication or SAN / Blade architecture is preferred. Scalability via dynamic resource allocation also does not seem to be as functional as the large V competition, although I have limited experience implementing this in either product.

Incentivized

• It makes it easy to secure virtual machines as they are segmented into microvms with a minimal attack surface area

Incentivized

• Easy to use GUI - very easy for someone with sufficient Windows experience - not necessarily a system administrator.
• Provisioning VMs with different OSes - we mostly rely on different flavors of Windows Server, but having a few *nix distributions was not that difficult.
• Managing virtual networks - we usually have 1 or 2 VLANs for our business purposes, but we are happy with the outcomes.

Incentivized

• Excludes devices unnecessarily
• Has a slow startup time the basis being to improve security which is quite irrelevant.
• It has limited functionalities on monitoring VMs despite being an open source.

Incentivized

• We manage Hyper-V using both System Center Virtual Machine Manager (SCVMM) and the in-build Hyper-V administration tool, the former being the main product we use as the built-in tool is very light on functionality, unlike VMware ESXi.
• Management of storage is not great and quite a shift away from how VMware does it with ESXi; there is no separate panel/blade/window for LUNs/data stores, which means there is a lot of back and forth when trying to manage storage.
• A dedicated client with all functionality in one place would be awesome.
• Having the equivalent of ESXi's virtual console is something which is absolutely needed.

Incentivized

Cheap and easy is the name of the game. It has great support, it doesn't require additional licenses, it works the same if it is a cluster or stand-alone, and all the servers can be centrally managed from a system center virtual machine manager server, even when located at remote sites.

Incentivized

It is very easy to configure new virtual machines and manage them. But you have to use different interfaces to perform various tasks. Especially as soon as it comes to clustering you have to use at least two different interfaces (Hyper-V Manager and Failover-Cluster Manager) to perform all necessary tasks. The newly released Windows Admin Center is a way into the right direction to get all management tasks into one single interface.

Incentivized

In the past 2 years our Hyper-V servers have only had a handful of instances where the VM's on them were unreachable and the physical Hyper-V server had to be restarted. One time this was due to a RAM issue with the physical box and was resolved when we stopped using dynamic memory in Hyper-V. The other times were after updates were installed and the physical box was not restarted after the updates were installed.

Incentivized

Hyper-V itself works quickly and rarely gave performance issues but this can be more attributed to the physical server specifications that the actual Hyper-V software in my opinion as Hyper-V technically just utilizes config files such as xml, and a data drive file (VHD, VHDX, etc) to perform its' duties.

Incentivized

I gave it a middle of the road rating - as far as getting direct help from Microsoft this never seems to happen. (Good luck getting ahold of them.) Getting help from online support forums is pretty much where I get all my help from. Hyper-V is used quite widely and anything you could need help with is out there and easily searched for on your favorite search engine.

Incentivized

We had in person training from a third party and while it was very in depth it was at a beginner's level and by the time we received the training we had advanced past this level so it was monotonous and redundant at that point. It was good training though and would have provided a solid foundation for learning the rest of Hyper-V had I had it from the beginning.

Incentivized

The training was easy to read and find. There were good examples in the training and it is plentiful if you use third party resources also. It is not perfect as sometimes you may have a specific question and have to spend time learning or in the rare case you get an error you might have to research that error code which could have multiple causes.

Incentivized

initial configuration of hyper-v is intuitive to anyone familiar with windows and roles for basic items like single server deployments, storage and basic networking. the majority of the problems were with implementing advanced features like high availability and more complex networking. There is a lot of documentation on how to do it but it is not seamless, even to experienced virtualization professionals.

Incentivized

Oracle VirtualBox works just fine on workstations, for testing pourposes. But sometimes the virtual network conflicts with the physical cards on the workstation. VMware is the state of the art, but it costs more than gold, and you will have to license every Windows Server VM hosted on it. EC2 as well; it will require an individual Microsoft Windows Server licence.

Incentivized

Nothing is perfect but Hyper-V does a great job of showing the necessary data to users to ensure that there is enough resources to perform essential functions. You can also select what fields show on the management console which is helpful for a quick glance. There are notifications that can be set up and if things go unnoticed and a Hyper-V server runs out of a resource it will safely and quickly shut down the VM's it needs to in order to ensure no Hardware failure or unnecessary data loss.

Incentivized

• Low memory overhead on each microVM
• We can run workloads from different customers on the same machine.

Incentivized

• With Hyper-V implementing new software or rules on a test, beds take fewer resources and time which is a great bonus.
• Virtual SAN management and Virtual Switch management make it easy to manage network and storage options.
• Editing the disk option made us resize disks on the fly and saved us maintenance, production time, and costs.

Incentivized