Independent disk are disks whioch are not affected by a snapshot.
Persistent disk behave like physical ones, what gets written is written to the disk permanentely. The disk operates normally except that changes to the disk are permanent even if the virtual machine is reverted to a snapshot.
The disk appears to operate normally, but whenever the virtual machine is powered off or reverted to a snapshot, the contents of the disk return to their original state. All later changes are discarded.
A raw disk is a a disk presented to a virtual guest bit which is not hold in a container file on a VMFS datastore but which uses a guest OS native partition on a shared storage volume. To make that partition usable to a guest a small file is needed, which holds information about that raw disk and points the guest to the right location. These disks can be used by virtual and physical servers.
AWo
VCP 3 & 4
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vExpert 2009/10/11
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