HP LeftHand SAN Solutions Support Document - Application Notes - Best Practices for Enabling Microsoft Windows with SAN/iQ®

Table Of Contents
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For source IP, select the IP address of the first host server NIC you
want to use to connect to the volume.
For Target Portal, select the VIP of the SAN/iQ cluster the volume
is on.
6 Click OK to close the Advanced Settings dialog.
7 Click OK to log on to the volume.
8 Repeat this process again, this time in Step 5, selecting the IP address of
the second host server NIC you want to use.
An Overview of Device Specific Modules & Microsoft™ MPIO
The Microsoft™ MPIO framework allows for storage vendors to write and
distribute Device Specific Modules (DSMs) in order to optimally handle
multipathing in a SAN environment specific to that vendor. MPIO is a key
component to building a Highly Available, Fault Tolerant SAN solution. MPIO
technologies provide for the following:
I/O Path Redundancy
I/O Path Failover
I/O Load Balancing
Lefthand Networks DSM for MPIO
Optimized for MPIO in an iSCSI environment based on LeftHand Networks
SAN technologies, the SAN/iQ DSM for MPIO provides for superior path
failover and performance capabilities. The LeftHand Networks SAN is unique
in its distributed system characteristics that give the end-user superior Fault
Tolerance. The SAN/iQ DSM for MPIO further leverages the distributed
system technologies and brings those technologies to the Windows iSCSI
driver. The SAN/iQ DSM provides enhanced MPIO functionality as follows:
An I/O path is built to each storage module in the cluster on which the
volume resides. The SAN/iQ DSM handles all the path creation
automatically for the Administrator, unlike other native MPIO solutions
which require manual path creation.
A superior performance architecture over native MPIO solutions;
Read I/Os are always serviced by a module that actually holds a copy
of the data being requested.