The name of the array.

For virtualized storage arrays only, for example HDS AMS, VSP; Parent arrays are listed, accounting for capacity that is collected from both the front and back ends of a virtualized array (HDS, IBM SVC, and NetApp). Each array links to the Array Capacity & Utilization report.

For Dell Compellent arrays: Sum of the capacity of all physical disks.

For EMC Symmetrix arrays: Sum of the capacity of all physical disks from all array groups—no spares. Note: When viewing raw capacity in EMC Control Center, disk group 0 (hot spares) is not included in the total capacity calculation—accounting for the difference between the EMC and Capacity Manager reported capacity values.
For EMC CLARiiON arrays: Sum of the capacity of all physical disks from all array groups—including spares (drives that are not allocated to an array group)
For HDS arrays: Sum of capacity of all PDEVs from all array groups. Capacity Manager assumes that all PDEVs are part of an array group, so PDEVs that are marked as--Not included in an array group--are included in the capacity calculation. That is, no disks are treated as spares.

For NetApp V-Series and vFilers: External capacity and vFiler capacity are excluded.
For HP 3PAR: Total capacity for all HP 3PAR disk drives associated with the 3PAR array.

The amount of physical (raw) capacity that has been allocated to RAID groups.

For Dell Compellent: Sum of (Total Capacity - Free Capacity) of the managed physical disk.

For EMC Symmetrix: Sum of all the capacities of the PDEVs in the arrays that are assigned to the Array Group. NetApp: Raw capacity - Raw available capacity.

For IBM XIV: Amount of raw, physical storage in the storage array.

The number of RAID groups for this array drills down to the List Array Groups report. For NetApp storage, this refers to Aggregates. For HP 3PAR: Number of Common Provisioning Groups (CPGs). Links to HP 3PAR Common Provisioning Group (CPG) Summary.

This is the physical, usable capacity after RAID overhead. In the case of Symmetrix arrays, this is raw, usable capacity. For virtualized arrays (HDS, NetApp, and IBM SVC), this is the front-end internal storage. For HP 3PAR: Internal capacity. The total capacity for all Logical Drives (LDs).

Represents the capacity on the back-end array that has been given to the front-end array

For HDS arrays: Capacity from back-end, external volumes, derived from daisy-chained external storage (back-end systems). This is array group capacity that does not have PDEVs in the storage array.
For NetApp V-series: Sum of aggregated capacity
For NetApp vFilers: Sum of volume capacity
For HP 3PAR: Always blank. HP 3PAR does not virtualize storage.

Total Capacity = Internal - Virtual + External Capacity
For thin-provisioned capacity: Total Capacity = Used + Free + Free Thin Capacity
For HP 3PAR: Internal capacity. The total capacity for all Logical Drives (LDs).

Amount of internal RAID group capacity allocated to LUNs. The total capacity of physical disks that are associated with a RAID group, minus the total free capacity of the RAID groups; does not include virtualized capacity. For HP 3PAR: Total capacity of Logical Drives (LDs) where the LD is mapped to a virtual volume.

Available capacity of the array groups in the storage array; usable uncarved RAID capacity. For NetApp E-Series systems, Free Thick Capacity = Total Usable Capacity – Used Usable Capacity.

Dell Compellent: Sum of LUN capacity - sum of LUN active and replay capacity.
EMC Symmetrix: Free Thin = Pool Capacity - Pool Used from Thin Pool Summary.
EMC VNX (CLARiiON): Free Thin = Available Capacity from Thin Pool Summary.
IBM Enterprise: Free Thin = N/A. Thin provisioning for DS8000 via Extent Space Efficient (ESE) Volumes and Track Space Efficient (TSE) Volumes not collected.
Hitachi: Free Thin = DP pool capacity - used DP pool capacity.
HP EVA: Free Thin = N/A, no thin provisioning.

The number of LUNs that have been created on the array. Click on the Used link or the LUN link to go to the LUN Utilization Summary Report. For HP 3PAR: Total number of Virtual Volumes.

The total capacity for the LUNs. For HP 3PAR: Total capacities of all Virtual Volumes (VVs) (fully provisioned and thinly provisioned).

The number of LUNs from which storage has been allocated. For HP 3PAR: Total number of Virtual Volumes (VVs).

The total storage capacity for the allocated LUNs. For HDS arrays, it includes Dynamically Provisioned capacity. For HP 3PAR: Total capacities of all Virtual Volumes (VVs) exported to hosts.

The number of LUNs that have yet to be allocated. These are LUNs that do not have a path to a host. For HDS arrays, this number includes promised Dynamically Provisioned capacity, but no reserved space. For HP 3PAR: Total number of Virtual Volumes (VVs) not exported to hosts.

Amount of unallocated LUN capacity. For HDS arrays, this number includes promised, Dynamically Provisioned capacity, but no reserved space. For HP 3PAR: Total capacities of all Virtual Volumes (VVs) not exported to hosts.

Total Free = Usable Free Capacity + Usable Free Thin Capacity + LUNs UnAllocated Capacity