Class CIM_RedundancySet


CIM_ManagedElement
\_CIM_Collection
  \_CIM_SystemSpecificCollection


Description

A class derived from SystemSpecificCollection that is a special collection of ManagedElements. This collection indicates that the aggregated elements together provide redundancy, or that redundancy is provided via sparing. All elements collected in a RedundancySet SHOULD be instantiations of the same object class.

Subclasses

IBMTSDS_LPARRedundancySet

Referenced By


Properties

IdTypeRangeDescription
Key
InstanceID string
Within the scope of the instantiating Namespace, InstanceID opaquely and uniquely identifies an instance of this class. To ensure uniqueness within the NameSpace, the value of InstanceID should be constructed using the following'preferred'algorithm:<OrgID>:<LocalID>Where<OrgID>and<LocalID>are separated by a colon':', and where<OrgID>must include a unique name. It can be a copyrighted, trademarked, or otherwise unique name that is owned by the business entity that is creating or defining the InstanceID. Or, it could be a registered ID that is assigned to the business entity by a recognized global authority. (This requirement is similarto the<Schema Name>_<Class Name>structure of Schema class names.) In addition, to ensure uniqueness<OrgID>must not contain a colon (':'). When using this algorithm, the first colon to appear in InstanceID must appear between<OrgID>and<LocalID>.<LocalID>is chosen by the business entity and should not be re-used to identify different underlying (real-world) elements. If the above'preferred'algorithm is not used, the defining entity must ensure that the resulting InstanceID is not re-used as any of InstanceIDs produced by this or other providers for the NameSpace of this instance.For DMTF-defined instances, the'preferred'algorithm must be used with the<OrgID>set to'CIM'.
Read Only
MaxNumberSupported uint32
MaxNumberSupported indicates the largest number of elements that can participate in the RedundancySet. A value of 0 indicates there is no limit on the number of elements.
MinNumberNeeded uint32
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.
OtherTypeOfSet string
When the corresponding array entry in TypeOfSet[]is'Other', this entry provides a string describing the type of set.
RedundancyStatus uint16
Unknown0
DMTF Reserved1
Fully Redundant2
Degraded Redundancy3
Redundancy Lost4
Overall Failure5
RedundancyStatus provides information on the state of the RedundancyGroup.'Fully Redundant'(value=2) means that all of the configured redundancy is still available;'Degraded Redundancy'(3) means 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');'Redundancy Lost'(4) means that sufficient configured elements are missing or failed that no redundancy is available and the next failure experienced will cause overall failure.'Overall Failure'(5) means that there has been an overall failure of the RedundancySet.
TypeOfSet uint16
Unknown0
Other1
N+12
Load Balanced3
Sparing4
Limited Sparing5
DMTF Reserved..
Vendor Reserved0x8000..
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.- Load Balanced (=3) indicates all members are active. However, there functionality is not independent of each other. Their functioning is determined by some sort of load balancing algrothim (implemented in hardware and/or software).'Sparing'is implied (i.e. each member can be a spare for the other(s).- Sparing (=4) 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).- Limited Sparing (=5) 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.
VendorIdentifyingInfo string
VendorIdentifyingInfo captures the vendor identifying data for the RedundancySet. One example is the product name for a cluster.
Read Write
LoadBalanceAlgorithm uint16
Unknown0
Other1
No Load Balancing2
Round Robin3
Least Blocks4
Least IO5
Address Region6
Product Specific7
The current load balance algorithm.Least Blocks, Least IO, and Address Region are used in storage device path redundancy drivers to optimize load balancing by routing requests to a path with the least queued blocks or IO requests, or based on locality of reference.'Product Specific'indicates that the algorithm is optimized for a particular type of product. Information about that product SHOULD be provided in an associated CIM_Product instance.
OtherLoadBalanceAlgorithm string
When LoadBalanceAlgorithm is Other, this property describes the algorithm.
 
Inherited from class CIM_ManagedElement
Caption, Description, ElementName
 

Method Summary

NameDescription
FailoverThis method forces a failover from one ManagedElement to another.
 

Method Detail


Failover

Description

This method forces a failover from one ManagedElement to another. There are two parameters to the Failover method.- FailoverFrom is a reference to an'active'ManagedElement that will become inactive after the method. This element SHOULD be part of the RedundancySet via a MemberOfCollection relationship.- FailoverTo is a reference to the ManagedElement that will take over for the FailoverFrom element. This element SHOULD either be a member of the RedundancySet or be associated with the RedundancySet via an IsSpare relationship.Upon sucessful completion:- the FailoverTo element SHOULD be associated to the RedundancySet via MemberOfCollection.- the FailFrom element SHOULD either still be associated to the RedundandySet via MemberOfCollection with a OperationalStatus or EnableState that indicates it not active, or it SHOULD be associated to the'Spared'collection via the MemberOfCollection association.

Parameters

IdTypeRangeDescription
In
FailoverFrom CIM_ManagedElement
The primary ManagedSystemElement that will become inactive after the method.
FailoverTo CIM_ManagedElement
The ManagedSystemElement that will take over from the primary MSE.
out
none
Return Codes
none