HP-UX 11i v3 introduces a new representation of mass storage devices, known as the agile view. In the agile view, disk devices and tape drives are identified by the actual object, not by a hardware path to the object. In addition, paths to the device can change dynamically and multiple paths to a single device can be transparently treated as a single virtualized path, with I/O being distributed across those multiple paths.
In HP-UX 11i v3, there are three different types of paths to a device: legacy hardware path, lunpath hardware path, and LUN hardware path. All three are numeric strings of hardware components, Special considerations 31 with each number typically representing the location of a hardware component on the path to the device.
The new agile view increases the reliability, adaptability, performance, and scalability of the mass storage stack, all without the need for operator intervention. For more information, see the white papers “The Next Generation Mass Storage Stack: HP-UX 11i v3” and “HP-UX 11i v3 Persistent DSF Migration Guide” (http://hp.com/go/hpux-core-docs ).
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Everpure recommends that you use Agile DSF due to the round-robin load-balancing capability that has been introduced.