Docker vs. VMware vCenter

You are going to be able to find the most resources and examples using Docker whenever you are working with a container orchestration software like Kubernetes. There will always some entropy when you run in a container, a containerized application will never be as purely performant as an app running directly on the OS. However, in most scenarios this loss will be negligible to the time saved in deployment, monitoring, etc.

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The VMware vCenter server is very useful in maintaining the CPU/RAM/datastore resources are balanced when there are multiple ESX/ESXi host servers. It is clear what resources are being used, and it is easy to migrate VMs to different ESX/ESXi hosts. Being able to remotely connect to the VM servers in vCenter when you cannot have other remote connections helps in maintenance and troubleshooting.

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• Packaging of application to limit the space occupied
• Ease of running the application
• Provide multiple ways to handle the application issues and integration of different components like pipeline, ansible, terraform etc

• VSAN storage management and redundancy - high performance IO with built in fault tolerance across the cluster, not reliant on a single hardware item
• VM fault tolerance. The ability to relocate a running VM and restart VMs from failed or isolated nodes
• Resource management and alerting. Tracking load across physical systems and allowing us to rebalance for better utilisation

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• Docker hub image retention policy can be relaxed
• Docker hub policies can be more developer friendly
• Docker CLI help section can be improved
• Image and container storage (local) management can be optimized

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• Currently, the HTML 5-based vSphere Client lets you manage the essential functions of vSphere from any browser, however, it would be nice if they would port all management functions over to the HTML 5-based Client.
• Performing updates and upgrades to the infrastructure is a bit challenging for someone that may not be as intimate with vSphere. I think the updates/upgrades should be more integrated into the UI and provide the ability to push to the hosts, etc...
• It would also be nice to have a more robust snapshot management tool to prevent snapshot overgrowth. It would be nice to be able to set a lifespan for the snapshot(s)

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We are very dependent on this software, it has become a much needed tool to perform the daily tasks that are required to maintain the virtual server environment. VMware has become very pricey over the years, so we are looking for alternatives for cost savings strategy, but nothing has been found to be on par to what we are currently using

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I have been using Docker for more than 3 years and it really simplifies the modern application development and deployment. I like the ability of Docker to improve efficiency, portability and scalability for developers and operations teams. Another reason for giving this rating is because Docker integrates CI/CD pipelines very well

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I work with vCenter for 10+ years and i love it. I can find my way around and can help building and expanding the platform. It is easy to use and there are a lot good communities for the extra support when needed. Even the Homelab community is of great value.

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Haven't seen any outages, fatal/unrecoverable errors in my usage so far. Enough said.

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Docker Desktop. The CPU high usage is a known issue. Needs fixing. Otherwise, it is great overall. Would not use anything else still.

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VMware support has always been fantastic and they have been invaluable in solving tougher issues that have been run into. Most of the time, any oddities encountered are fixed by available updates. This can be deduced by support quickly with logs within vCenter. We have not run into something yet that support was unable to help with. They either have a solution already, or they are able to find one quickly.

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Since moving away from the Windows Server hosting the vCenter application and instead using a virtual appliance, it has become much easier to implement and deploy the new versions. We can easily create a snapshot or clone of the vCenter vApp to ensure any problems encountered during the upgrade can be mitigated with a fall back to the old version to prevent unscheduled downtime.

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The reason why we are still using Docker right now is due to that is the best among its peers and suits our needs the best. However, the trend we foresee for the future might indicate Amazon lambda could potentially fit our needs to code enviornmentless in the near future.

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Citrix Xen Server.... Great Hypervisor but very limited in terms of functionality

MS Hyper-V... [VMware vCenter Server] is better for almost everything and appliance form makes a clear winner for security and ease of deployment

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It is the only tool in our toolset that has not [had] any issues so far. That is really a mark of reliability, and it's a testimony to how well the product is made, and a tool that does its job well is a tool well worth having. It is the base tool that I would say any organisation must have if they do scalable deployment.

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• Reduces the number of virtual machine which impacted our quarterly billing
• Using docker with proxy we run multiple application on same port on same host.
• impact on billing is we have to provide docker training to the people who are working on it.

• The positive impact of vcenter is definitely felt in larger organisations in terms of being able to manage multiple servers all in one environment
• It will decrease the amount of time your server engineers will have to spend in the server room or datacenter.

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