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Taking snapshots of VMware ESX 4 running in a VM

VMware ESX 4 can virtualize itself, and by using a special undocumented configuration setting it is now possible to take snapshots of virtual VMware ESX 4 systems.

Responsible Thin Provisioning in VMware vSphere

VMware vSphere 4 offers thin provisioned virtual disks backed by management that enables safe use in a production environment thanks to advanced accounting of all provisioned space.

VMware vSphere 4 has a Snapshot Alarm

Snapshots have always been a powerful feature of VMware ESX — even in production deployments.  There are tons of innovative tools and scripts out there to monitor snapshots — just check out this new one from Virtu-Al. If you happen to want a simple, built-in way to monitor your snapshots in VMware vSphere 4, look […]

Hyper-V snapshots: not for production

One of the greatest things about virtual machines is the ability to take snapshots, which can be used to quickly roll a VM back to a known state. Previously, I have written about some of the shortcomings with Microsoft’s Hyper-V snapshots.  Or were they checkpoints?  I forget… but that’s not important.  The main problem with […]

IGT Part 5: Hyper-V snapshots are not gone until the VM is powered off

Unlike VMware ESX, when administrators delete snapshots on Hyper-V, the disks are not merged until the VM is powered off -- potentially filling up disks.

Half the VM reboots on Patch Tuesday

Virtual machine snapshots are a quick way to recover from unexpected incompatibilities you may encounter when patching guest operating systems.  In fact, VMware Update Manager even provides an option to automatically snapshot a VM before applying updates and then delete the snapshot after a specified amount of time. Even if you are not using VMware […]

Snapshots that shoot back

Although the Hyper-V Manager and SCVMM allow removing snapshots from running VMs, they are not actually merged until the VM is powered off.

Checkshots or Snappoints?

Stop me if you’ve heard this one: What’s the difference between a checkpoint and a snapshot?