Reference Guide

Property Description
MinNumberNeeded
MinNumberNeeded indicates the smallest number of elements that
MUST be operational in order to function. For example, in an N+1
redundancy relationship, the MinNumberNeeded property is set equal
to N. In a 'LimitedSparing' environment, this property is meaningless
and SHOULD be set to zero.
RedundancyStatus
RedundancyStatus provides information on the state of the
RedundancyGroup.
Possible values are:
• 0 = Unknown
• 1 = DMTF Reserved
• 2 = Fully Redundant — Indicates that all of the configured
redundancy is still available
• 3 = Degraded Redundancy — Indicates that some configured
elements are degraded, missing or failed but that the number of
elements in the set is still greater than the minimum required
(MinNumberNeeded);
• 4 = Redundancy Lost — Indicates that sufficient configured
elements are missing or failed that no redundancy is available and
the next failure experienced will cause overall failure.
• 5 = Overall Failure — Indicates that there has been an overall
failure of the RedundancySet.
TypeOfSet
TypeOfSet provides information on the type of redundancy. - N+1
(=2) indicates all members are active, are unaware and function
independent of one another. However, there exist at least one extra
member to achieve functionality. Sparing is implied (i.e. each
member can be a spare for the other(s). An example of N+1 is a
system that has 2 power supplies, but needs only 1 power supply to
functioning properly.
Possible values are:
• 0 = Unknown
• 1 = Other
• 2 = N+1
• 3 = Load Balanced — Indicates all members are active. However,
there functionality is not independent of each other. Their
functioning is determined by some sort of load balancing
algorithm (implemented in hardware and/or software). Sparing is
implied (i.e. each member can be a spare for the other(s).
• 4 = Sparing — Indicates that all members are active and are aware
of each others. However, their functionality is independent until
failover. Each member can be a spare for the other(s).
• 5 = Limited Sparing — Indicates that all members are active, and
they may or may not be aware of each and they are not spares for
each other. Instead, their redundancy is indicated by the IsSpare
relationship.
• .. = DMTF Reserved
• 0x8000.. = Vendor Reserved
269