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 5. vSphere Pluggable Storage Architecture (PSA)
vSphere 5.0 continues to utilize the Pluggable Storage Architecture (PSA) which was introduced with ESX 3.5. The move to this architecture modularizes the storage stack, which makes it easier to maintain and to open the doors for storage partners to develop their own proprietary components that plug into this architecture.
Availability is critical, so redundant paths to storage are essential. One of the key functions of the storage component in vSphere is to provide multipathing (if there are multiple paths, which path should a given I/O use) and failover (when a path goes down, I/O failovers to using another path).
VMware, by default, provides a generic Multipathing Plugin (MPP) called ...
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