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 15. Snapshot Handling
Data is written to storage devices frequently in such a dynamic environment as vSphere 5. Losing a few hours’ worth of data, for whatever reason, could translate to a large amount of data loss. Storage arrays provide varying forms of Business Continuity/Disaster Recovery (BC/DR) capability to help mitigate this risk. Examples of these capabilities are
• Snapshots
• Replicas
• Mirrors
In this chapter, I cover details affecting VMFS (virtual machine file system) datastores.
What Is a Snapshot?
A storage snapshot is a static view of data at a certain point in time. It is commonly implemented as pointers to unmodified blocks on the primary LUN as of the time of taking the snapshot. If and when any of the blocks are to ...
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