Firecracker vs. IBM PowerVM

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

IBM Power VM is well suited in a large environment where we have to run multiple virtual machines on a single hardware and utilize the hardware more efficiently. It directly saves the cost of the organization. Due to the high licensing cost of IBM Power VM, it's less appropriate for smaller, less critical applications that do not need a lot of performance.

Incentivized

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

Incentivized

• Offers a very granular virtualization of each core.
• Provides a quick and easy environment to build and maintain.
• Is rock solid and provides a reliable production environment.

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 have yet to upgrade VIOs from 2.2.0 to 2.2.3 which will provide the more GUI centric management, however, making the VIO servers easier to manage would be one area. I think this is done with the latest versions of HMC and PowerVM.
• More real-time and historical performance reporting.

Incentivized

The product works. It provides the proven environment to support IBM's primary operating systems that run on the IBM Power processing systems. This by extension includes the IBM various storage products that work within that environment. It has proven to be seamless as the environment has grown and as various new products and version updates have been added. As with most IBM products, the support is excellent.

Incentivized

IBM PowerVM is the best and most stable product in the virtualization market. It gives the best performance with IBM Power Server, especially its best solution, where we have to run critical applications and save applications licensing costs. It provides a lot of good features like LPM, shared processor pool...etc, which makes the environment more flexible.

Incentivized

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

Incentivized

• We are able to run several LPARs on one frame, which means we do not need to buy as many physical servers. That saves on floor space, power, and heating and cooling of the data center, among other things.
• Using LPM allows us to do maintenance on a frame without impacting the LPARs, giving us greater uptime.

Incentivized