The storage subsystem, or root node, has the types of child nodes that are shown in the following table.
Table 5. Nodes on the Logical tab
Child nodes of the root node Description of the child nodes
All Logical Objects This node lets you view information about all the logical objects that comprise your storage subsystem. Use the Object Type drop-down menu in the View pane to select a particular object type. This is a useful way to view the status and capacity information for a disk pool or an array, or view all the repository logical drives that are associated or not associated with a base logical drive used with the Flashcopy Image, Enhanced Flashcopy Image, and Consistency Group premium features.
Total Unconfigured Capacity This node represents the sum of the capacity of all unassigned drives that are not in a disk pool or an array.
Unconfigured Capacity This node represents the storage subsystem capacity that is not configured into an array. Multiple Unconfigured nodes appear if your storage subsystem contains drives with different media types (hard disk drives or solid state drives) and different interface types. Each drive type has an associated Unconfigured Capacity node shown under the Total Unconfigured Capacity node if unassigned drives are available in a drive enclosure.
Disk Pools The IBM Storage Manager displays a Disk Pools node if one or more disk pools have been configured for your storage subsystem. Expand the Disk Pool node to see the individual disk pools. If the Flashcopy premium feature is enabled, you can have the flashcopy image child nodes.
The disk pool node has several types of child nodes:
v Logical Drive— This node represents a configured and defined logical drive (either of standard or thin logical drive). Multiple Logical drive nodes can exist under a Disk Pools node.
v Free Capacity— This node represents a region of capacity that you can use to create one or more new logical drives within the disk pool. A Free Capacity node can exist under each Disk Pool node.
v Enhanced Flashcopy Images— This node represents a logical point-in-time image of a selected base logical drive. A base logical drive is a standard logical drive or a thin logical drive that is the source of an enhanced flashcopy image.
v Enhanced Flashcopy Groups— This node represents the sequence of enhanced flashcopy images of the same base logical drive.
v Enhanced Flashcopy logical drives— This node indicates that you have created a view of an enhanced flashcopy image. You create an enhanced flashcopy logical drive to allow a host to access an enhanced flashcopy image as if it were a logical drive.
v Primary and Secondary logical drives— This node indicates whether the logical drive in the Enhanced Remote Mirroring logical drive pair is primary or secondary.
Table 5. Nodes on the Logical tab (continued)
Child nodes of the root node Description of the child nodes
Arrays The Logical drive node and the Free Capacity node are standard child nodes. If the Enhanced Flashcopy Image premium feature is enabled, you can have the Enhanced Flashcopy image child nodes.
v Logical Drive— This node represents a configured and defined logical drive. An array supports standard logical drives only. Multiple logical drive nodes can exist under an Array node.
v Free Capacity— This node represents a region of capacity that you can use to create one or more new logical drives within the array. Multiple Free Capacity nodes can exist under an array node.
v Enhanced Flashcopy Images— This node represents a logical point-in-time image of a selected base logical drive. A base logical drive is a standard logical drive or a thin logical drive that is the source of an enhanced flashcopy image.
v Enhanced Flashcopy Groups— This node represents the sequence of enhanced flashcopy images of the same base logical drive.
v Enhanced Flashcopy Logical Drives— This node represents the enhanced flashcopy images of base logical drives that are visible to a host.
v Primary and Secondary logical drives— This node indicates whether the logical drive in the Enhanced Remote Mirroring logical drive pair is primary or secondary.
v Flashcopy Logical Drive— are child nodes of their associated base logical drives.
Consistency Groups If the Enhanced Flashcopy premium feature is enabled, you can have the following consistency group child nodes:
v Consistency Group— This node represents a grouping node which includes all the child nodes created for this consistency group. Expand this node to see the child nodes.
v Enhanced Flashcopy Images— This node represents a collection of logical point-in-time image of the member logical drives of a consistency group.
v Member logical drives— This node is a collection of the logical drives that are members of this consistency group.
v Enhanced Flashcopy logical drives— This node represents the enhanced flashcopy images of member logical drives that are visible to a host.
Enhanced Global Mirror Groups
These are special logical drives in the storage subsystem that are created as a resource for each controller in both local storage subsystems and remote storage subsystems.
The controller stores duplicate information on the mirror repository logical drive, including information about remote writes that are not yet written to the secondary logical drives.