Array Capacity Utilization Reports > Array Capacity & Utilization (Hitachi Arrays & HDP View)
  
Version 9.2.00
Array Capacity & Utilization (Hitachi Arrays & HDP View)
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The Array Capacity and Utilization report provides an overview of storage array capacity and utilization. Use this report to identify storage arrays that are under utilized or highly utilized.
The Array Capacity & Utilization report represents Hitachi Arrays and Hitachi Dynamic Provisioning (HDP) in the following manner:
Storage Array
The name that you assigned to the array. Available values include all supported storage devices. For a list of supported devices, see the APTARE StorageConsole Certified Configurations Guide.
Family
The family classification of the storage array as assigned by the vendor. Use this name to ascertain the vendor’s product specifications.
Type
The specific model of the storage array.
Vendor
The name of the vendor that distributes the storage array.
Product
The name of the product, typically shown as a series number. This field provides an indicator of capacity specifications, such as LUNs, hosts per array, and drives per array.
# Ports
The number of ports in the array. Click on this link to view the Array Capacity Forecast.
# Disks
The number of disks in the array.
# Hosts
This is the total number of unique hosts that have LUNs assigned by this storage array, and the hosts have been successfully queried using one or more host resource policies. If zero, host resources data has not been collected. Click on the Hosts link to go to the Host Capacity & Utilization report.
Host Usage
Links to the LUN Utilization Summary report.
% Used
The percentage of the storage that is currently used.
Physical Summary
Raw Capacity
For HDS arrays: Sum of capacity of all PDEVs from all array groups. When calculating raw capacity for HDS arrays, StorageConsole makes requests to the Device Manager for physical devices (PDEVs) for all Array Groups in a storage array. Capacity Manager assumes that all PDEVs are part of an array group, so PDEVs that are marked as not included in an array group (-1) are included in the capacity calculation. That is, no disks are treated as spares.
Configured RAID
Total raw capacity of the LUNs in the array that have been mapped to a host. These LUNs are typically configured as volumes on the host and dedicated to an application.Unallocated storage is storage that is not part of an Array Group.
Available
Total raw capacity of the array that has not been carved into a RAID group. The size is displayed in the units you selected with the Advanced option when you generated the report.
% Available
Expressed as a percentage, total capacity of the LUNs in the array that have not been assigned to a host and that are available for provisioning. This percentage is a better capacity indicator than the number shown as Available Size.
# RAID Groups
The number of array groups in the storage array. Links to List Array Groups.
Usage
Expressed as a percentage, total capacity of the LUNs in the array that have been assigned to a host and that are not available for provisioning.
Usable Summary (post-RAID)
Internal Capacity
Amount of usable capacity from physical RAID groups.
External Capacity
Applicable to HDS arrays only - Capacity from block storage, derived from daisy-chained external storage. This is array group capacity that does not have PDEVs in the storage array.
Used Capacity
Amount of internal RAID group capacity allocated to LUNs.
Free Capacity
Amount of available capacity in RAID groups from which to allocate LUNs.
Usage
Thermometer with mouse-over that displays the RAID Group Usage percentage
Dynamic Provisioning
# Pools
The number of dynamic provisioning pools links to the Dynamic Provisioning Pool Summary
Capacity
The Dynamic Provisioning capacity for this array
Used
Amount of the dynamically provisioned capacity in use
Free
Amount of the dynamically provisioned capacity that is available.
DP Usage
Mouse over this thermometer to view the usage.
LUN Summary
# Open Reserved LUNs
For Hitachi USP arrays, these are reserved LUNs that cannot be assigned to hosts; for example, dynamic pool capacity. No paths can be set for these LUNs.
Open Resv LUN Capacity
For Hitachi USP arrays, this is the capacity of the reserved LUNs that cannot be assigned to hosts; for example, dynamic pool capacity. No paths can be set for these LUNs.
# Open Allocated LUNs
The number of open LUNs (volumes) that have set paths.
Open Alloc LUN Capacity
Represents the capacity of the open LUNs (volumes) that have set paths.
# Open Unallocated LUNs
The number of open LUNs that do not have set paths.
Open Unalloc LUN Capacity
The capacity of the open LUNs that do not have set paths.
# LUNs
Number of LUNs present in the storage array.
Total LUN Capacity
Sum of the capacity of all LUNs for the storage array.
LUN Usage
The percentage of the LUN that is allocated.