If you take at least one snapshot of a virtual machine that has disks larger than 2TB, and you delete one or more of the snapshots, the snapshot files might not consolidate.

Problem

One of the snapshot files, a redo log or child disk, might remain unconsolidated. An unconsolidated file can result in inefficient use of storage, and the unconsolidated child disk can grow over time because of the guest operating system I/O.

Procedure

  • Delete the snapshots while the virtual machine is turned off.

    Plan for routine virtual machine down time to remove unconsolidated files to avoid this problem.

  • Alternatively, you can turn off the virtual machine and forcibly consolidate the unconsolidated disks by using the vSphere Web Client. See the Virtual Machine Administration documentation.