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 7. Multipathing and Failover
One of the most critical elements of storage availability in the enterprise is multipathing and failover. vSphere 5, and as early as ESX 1.5, includes native multipathing (NMP) right out of the box. Although it does not provide the complex level of input/output (I/O) load balance that storage vendor’s proprietary Multipathing Input/Output (MPIO) software provides, it does an excellent job with maintaining access to the shared storage that the infrastructure uses.
In ESX versions prior to 4.0, the portion of the vmkernel responsible for multipathing and failover was referred to as legacy multipathing. It was a monolithic code built into the vmkernel. Any changes or updates to this code required installing a ...
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