Appendix—Load Balancing 79
To change the load balance policy using Windows Server 2008 disk
management:
1
From the desktop of the host, right-click
My Computer
and click
Manage
to open the
Computer Management
dialog.
2
Click
Disk Management
to show the list of virtual disks attached to the
host.
3
Right-click on the virtual disk for which you want to set the load balance
policy, then click
Properties
.
From the MPIO tab, select the load balance policy that you want to set for
this virtual disk.
Increasing Bandwidth With Multiple iSCSI SessionsThe PowerVault MD3200i series storage array in a duplex configuration
supports two active/active asymmetric redundant controllers. Each controller
has four 1 Gbps Ethernet ports that support iSCSI. The bandwidth of the
four ports on the same controller can be aggregated to provide optimal
performance. A host can be configured to simultaneously use the bandwidth
of both the ports on a controller to access virtual disks owned by the
controller. The multi-path failover driver that Dell provides for the MD3200i
series storage array can be used to configure the storage array so that all ports
are used for simultaneous I/O access. If the multi-path driver detects multiple
paths to the same virtual disk through the ports on the same controller, it
load-balances I/O access from the host across all ports on the controller.
FigureC-1 illustrates how the initiator can be configured to take advantage of
the load balancing capabilities of the multi-path failover driver.
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