Virtual logical unit state maintenance rules engine

A storage switch, comprising:

• a first virtual logical unit configuration including at least one first member and at least one second member;
• a state and status indicator for said first virtual logical unit configuration, said state and status indicator is updated to reflect a current state and status of each member of said first virtual logical unit configuration;
• a rules database including resulting status information for said first virtual logical unit configuration, said resulting status information is indexed in said rules database based upon an event associated with said first virtual logical unit configuration and a current state and status of each member of said first virtual logical unit configuration;
• and
• a management module adapted to receive an indication of an event associated with said at least one first member of said first virtual logical unit configuration, wherein said management module, upon receipt of an indication, determines resulting status information for said first virtual logical unit configuration using said state and status indicator and said rules database.

One or more processor readable storage devices having processor readable code embodied on said one or more processor readable storage devices, said processor readable code for programming one or more processors to perform a method comprising:

• detecting an event associated with at least one first member of a first virtual logical unit configuration;
• determining a resulting status of said at least one first member as a result of said event;
• accessing current state and status information for at least one second member of said first virtual logical unit;
• and
• determining a resulting status of said first virtual logical unit from a rules database, wherein said current state and status information for said at least one second member and said resulting status of said at least one first member are used to index into said rules database.