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The Complete VMware vSphere Guide
book

The Complete VMware vSphere Guide

by Mike Brown, Hersey Cartwright, Martin Gavanda, Andrea Mauro, Karel Novak, Paolo Valsecchi
November 2019
Beginner content levelBeginner
768 pages
32h 29m
English
Packt Publishing
Content preview from The Complete VMware vSphere Guide

Virtual disks

A virtual disk stores the actual VM data and the VM can be configured to use a new disk, attach an existing disk, or map a SAN LUN. A LUN to a VMFS map is referred to as a Raw Device Mapping (RDM) that points to the raw LUN. In this case, the .vmdk file (.vmdk files will be discussed later in the file structure) doesn't store data, as the data is stored in the LUN, but it contains the mapping to the LUN disk information.

Virtual disks can be moved across different data stores connected to the host on which the VM runs. When a new disk is created, it can be provisioned in three different formats, depending on the requirements:

  • Thick provision lazy zeroed: This is the default format; space on the datastore is allocated when the ...
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Publisher Resources

ISBN: 9781838985752Supplemental Content