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VCAP5-DCA Official Cert Guide: VMware Certified Advanced Professional 5- Data Center Administration by John A. Davis, Steve Baca

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Chapter 3. Storage Concepts

This chapter covers the following subjects:

Virtual Disk Format Types—Three types of virtual disks are available to virtual machines. The Lazy-Zeroed Thick Virtual Disk is the default format, Eager-Zeroed Thick Virtual Disk zeros and formats all of its blocks at creation, and Thin Virtual Disk does not preallocate capacity when it is created.

Complex Storage Solutions—With complexity and different storage requirements, there is a need for specialized solutions. Several sections help to solve different needs. As an example, there are sections on VMware DirectPath I/O, NPIV, Storage Filters, SSD Devices, Software iSCSI port binding, to name a few solutions.

Identify Storage Provisioning Methods—Two types of datastores ...

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