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Direct LUN Access

Direct LUN Access (Erl, Naserpour)

How can a virtual server overcome performance limitations imposed by emulated file-based storage?

Problem

LUNs mapped via a host bus adapter on the hypervisor can restrict data access to emulated file-based storage, which can impose performance limitations.

Solution

The virtual server is granted direct access to block-based storage LUNs via the physical host bust adapter card.

Application

Raw device mapping technology is used to configure the hypervisor to enable access to raw, block-based LUNs to virtual server.
Direct LUN Access: A cloud architecture in which virtual servers are given direct access to block-based storage LUNs (Part 1).

A cloud architecture in which virtual servers are given direct access to block-based storage LUNs (Part 1).

Direct LUN Access: A cloud architecture in which virtual servers are given direct access to block-based storage LUNs (Part 2).

A cloud architecture in which virtual servers are given direct access to block-based storage LUNs (Part 2).

NIST Reference Architecture Mapping

This pattern relates to the highlighted parts of the NIST reference architecture, as follows:

Direct LUN Access: NIST Reference Architecture Mapping