November 2015
Intermediate to advanced
270 pages
5h 35m
English
Content preview from VMware vSphere TroubleshootingBecome 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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Multipathing and PSA troubleshooting
PSA is a collection of storage APIs used by a vSphere host using a VMkernel layer. PSA has different components, and its open and modular framework design allows an independent storage design for third-party SAN developers to directly interact with the storage I/O path of vSphere hosts.
PSA manages different plugins that perform different I/O operations, for example, synchronizing the concurrent I/O access, path selection, and load balancing can be defined by multiple multipathing plugins (MPPs), which can be provided by a SAN provider. The two most famous third-party MPPs are as follows:
- Symantec Dynamic Multi-Pathing (http://goo.gl/dTH2PV)
- EMC PowerPath (http://goo.gl/SNJRXr)
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