About DataCore MPIO Software
The DataCore licensed software product, Multi Path I/O (MPIO), provides seamless measures that ensure data availability and drastically reduce data downtime. MPIO software is installed on application servers. For details about configuring and using DataCore MPIO software, please refer to the Help installed with the software on the application server.
There may be some special configuration necessary for your application server depending on your specific operating system. It is very important to refer to our Technical Support Web site for detailed FAQs about instructions pertaining to your specific operating system and your high availability products.
MPIO
DataCore Multi Path I/O (MPIO) is a high availability software feature that provides path redundancy to multi-path storage devices. The DataCore MPIO product simulates multi-pathing by means of multiple mappings of the same volume and allows up to 16 paths to any virtual volume. DataCore MPIO x64 software provides this capability for 64-bit platforms.
In a DataCore MPIO configuration, one or more storage servers communicate with one application server, and by using multiple mappings, the application server will see each volume as one storage device with multiple paths. A failure on the active path of a volume will result in a failover to a passive path.
If a volume experiences a problem that requires a failover, then the volume will failover to the first available path. The volumes will remain on the new path until the initial path is restored, a subsequent error occurs that requires another failover, or until you manually* direct the volumes to a different path from the client.
Virtual volumes are created in the standard manner reflected in this Help, but you must specify the mirror path type of your virtual volumes as 3rd Party AP/MPIO (3PAP).