Consolidate the virtual disk files of the virtual machine by finding hierarchies
of redo logs that can be combined without violating data dependency. The
redundant redo logs after merging are then deleted.
Consolidation improves I/O performance since less number of virtual disk
files need to be traversed; it also reduces the storage usage. However
additional space is temporarily required to perform the operation. Use VcVirtualMachine to estimate the
temporary space required.
Consolidation can be I/O intensive, it is advisable to invoke this operation
when guest is not under heavy I/O usage.