August 2012
Intermediate to advanced
700 pages
13h 23m
English
Content preview from Storage Implementation in vSphere® 5.0Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 12. VMFS Architecture
vSphere 5 and its near predecessors are inherently highly scalable clustered environments. From the very beginning of the life of ESX, VMware Virtual Machine File System (VMFS) has been the core element that holds the environment together.
VMFS is the core component of vSphere’s storage virtualization as it abstracts the underlying storage and presents it to Virtual Machines (VMs) in various formats: virtual disks, PassthruRDMs, nonPassthruRDMs, snapshots, and so on. More on that later!
History of VMFS
VMFS evolved from a flat file system to a highly specialized clustered file system over four generations.
VMFS1
The first version of VMFS, which shipped with ESX 1.x, was a flat file system (did not provide directories) ...
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