Microsoft Mpio For Iscsi Load-Balancing Policies; Iscsi Initiator Mpio Properties - HP StorageWorks MPX200 User Manual

7. Select the desired options on the Load Balance Policy menu.
Figure 68 iSCSI Initiator MPIO properties
.

Microsoft MPIO for iSCSI load-balancing policies

The Microsoft MPIO for iSCSI load-balancing policies are as follows:
• Failover Only. No load balancing is performed. There is a single active path; the remaining paths
are standby paths. The active path sends all I/O. If the active path fails, a standby path is used.
When the formerly active path is reconnected, it becomes active and the activated standby path
returns to standby.
• Round-robin. All paths are active paths and are used to send I/O in a round-robin fashion.
• Round-robin with a subset of paths. One set of paths is configured as active and another set of
paths is configured as standby. I/O is sent in a round-robin fashion over the active paths. If all
active paths fail, a standby path is used. When a formerly active path is reconnected, it becomes
active and the activated standby path returns to standby.
• Weighted Path. Each path is assigned a weight and I/O is sent on the path with the lowest weight.
If the path with the lowest weight fails, the path with the next lowest weight is used.
• Least Queue Depth. This is not supported by MPIO.
NOTE:
For raw disk access, the MPIO load-balancing policy must be Failover Only. For file system disk
access, all MPIO load-balancing policies are supported. Failover policies are set on a LUN-by-LUN
basis. MPIO does not support global failover settings.
MPX200 Multifunction Router User Guide 97