Storage System node
A Storage System node represents a single storage array chassis. It is the container node for the other nodes modeling the structure of storage entities.
A Storage System node is created or updated when a storage entity is discovered by one of the following:
- WBEM queries to storage management software triggered by the creation or update of an SI representing storage management software
- Directly discovered storage using WBEM queries to the WBEM/SMI-S provider triggered by the creation or update of a Storage Device node representing the onboard controller of the storage array chassis
- Directly discovered storage using SNMP triggered by the creation or update of a Storage Device node representing the onboard controller of the storage array chassis
The removal of a Storage System node is governed by aging in the same way as Host nodes. However, in the case of the Storage System, it is the relationships between the Storage System and its manager that are aged. The manager is either:
- The SI representing the management software
- The Storage Device representing the onboard controller of the storage array chassis
Case 1 - Single manager
When the manager is scanned and the Storage System is no longer discovered, the management relationship begins to age. If it is not discovered in ten days and seven scans (the default), the relationship is removed. If the Storage System has no relationships to a manager, then it is removed.
Case 2 - Multiple managers
Where a Storage System has multiple managers, SIs, Storage Devices, or both, each management relationship ages in the same way as the single manager case. If the Storage System is no longer discovered through a manager, then the relationship between that manager and the Storage System begins to age, and after ten days and seven scans, the relationship is removed. If during this time, the Storage system has been successfully discovered at each scan through a different manager, then the relationship between that manager and the Storage System does not age. Consequently, the Storage System still has a relationship with a manager, and is not removed. When all relationships have been removed, the Storage System is removed too.
When a StorageSystem is removed, all of the nodes it contains are removed. This is Containment Removal, see Containment Removal.
Storage System node attributes
The attributes of a Storage System node are as described in the following table:
Storage System type.
Storage Access Mechanisms
Storage access mechanisms.
World Wide Node Name
World Wide Node Name.
Total Disk Space
Total disk space.
Total Consumed Capacity
Total consumed capacity.
Total Subscribed Capacity
Total subscribed capacity.
Backend Storage Capacity
Backend storage capacity.
Not displayed in UI
Internal attribute to aid searching Devices by IP address.
Not displayed in UI
Internal attribute to aid searching Devices by name.
Globally unique key.
Description of the element.
URL for information about the element.
Business Continuity Critical
If true, element is critical to operation of the business.
Supported by 3rd Party
True if the element is supported by a third party.
Other names for the element.
Storage System node relationships
The relationships of a Storage System node are as described in the following table:
Pools for this StorageSystem.
Volumes for this StorageSystem.
Disk drives for this StorageSystem.
Storage device of this Storage System.
Software Instances that manage this Storage System.
NetworkDevices that manage this Storage System.
Storage Processors for this Storage System.
File Systems available on this storage.
The group that this Storage system is part of.
Not displayed in UI
A file attached to this element.
The lifecycle status of this element.
The recovery time specified for this element.
Family of this element.
The Organizational Unit that this element belongs to.
Location of this element.
The person or owner responsible for the support of this element.
The person or owner responsible for this element from a business perspective.
The person or owner responsible for this element from an IT perspective.
Storage Volume Mirrors
Volume Mirrors for this StorageSystem.
Hosts that manage this Storage System.