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MPIO or MultiPath I / O is a Windows feature that allows multiple path support for storage.
MPIO addresses two issues: performance and reliability.
The majority of storage bays have two controllers for reliability reasons. Whether you are a SAN or a DAS, the servers are “attached” to the array via the two controllers, which allows you to present a volume to the server with multiple paths.
Representation of a volume x presented to a server without MPIO:
On Windows this is how it is represented:
The same volume is seen many times.
Prerequisites for configuration:
- In order to be able to configure the MPIO, it is necessary to present at least one volume to the server.