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

This article is part of a series on Incoming Google Traffic (IGT).

Evidently, some Hyper-V administrators are puzzled by that platform’s snapshot behavior.  I am starting to see visitors come to VCritical when searching for:

hyper-v “merge in progress”
hyper-v “paused-critical”

This is exactly the issue that I wrote about recently.  With VMware ESX, administrators can create and delete snapshots on running VMs — without incurring downtime.  Deleted Hyper-V snapshots are only merged when the VM is powered off.  That could mean twice the number of reboots during VM guest OS maintenence.

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