Periodically taking snapshots of your VMware ESXi virtual machine state is essential to ensuring you can revert problematic application upgrades and quickly correct other issues. However, allowing VMware snapshot files to accumulate without proper oversight can profoundly degrade virtual machine performance. In fact, if you storage runs out of free disk space, your virtual machines might not be able to even start, let alone run at peak performance. Therefore, to mitigate problems that could threaten the availability or integrity of your data, you need proper VMware snapshot management.
A VMware snapshot is a copy of the state of a virtual machine disk file (VMDK) at a given moment in time, taken by the vSphere Client Snapshot Manager. Snapshots provide a change log (delta) for the virtual disk, and are used to restore a virtual machine back to a previous state. Here’s what you need know about how VMware snapshots work:
VMware Snapshot Manager provides only limited snapshot management functionality: You can see the snapshots of only one virtual machine at a time, and to get the detailed information you need to manage snapshots (such as snapshot size or disk space requirements), you have to go to the storage. Therefore, while VMware Snapshot Manager is useful, it may not be sufficient to enable you to get the control VMware snapshot creation across all of your virtual machines that you need to minimize memory, storage and performance risks.
Netwrix Auditor for VMware enables you to manage your snapshots more efficiently by providing an actionable VMware snapshot report and proactive alerts. You can: