Array Capacity Utilization Reports > Array Capacity & Utilization (IBM SVC View)
  
Version 10.3.00P13
Array Capacity & Utilization (IBM SVC View)
To access this report, in the Navigation pane select:
Choose a report scope that includes only IBM SVC storage arrays.
The following illustration represents an example of the view available for IBM SVC. See also How IBM SVC Capacity Values Are Derived and Array Capacity & Utilization (HP 3PAR View).
Storage Array
The name that you assigned to the array. Available values include all supported storage arrays.
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 or alphanumeric string. This field provides an indicator of capacity specifications, such as LUNs, hosts per array, and drives per array.
# Nodes
Number of SAN Volume Controllers, the providers of virtualization to the SAN.
# Ports
The number of ports in the array. Click the value to view the Array Port Utilization.
Total Free Space
The currently available space in the cluster. This is approximately backend storage capacity minus allocated capacity. Indicates the sum of the free capacity for the mdisk group.
% RAID Loss
This value represents the amount of space lost to RAID overhead. It includes mirroring and other overhead usage. The value is derived using the following: (non-primary mirror extents + managed MDisks) - ((MDisk Group real capacity - MDisk Group remaining managed space)/MDisks Total)
# Hosts
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 the value to go to the Host Capacity & Utilization.
Host Usage
% Host Usage
The percentage of the total capacity that is being used by hosts
# Disks
The number of physical disks for this storage array. Links to the Disk Summary report for additional information.
Capacity
Total physical capacity. This is populated as physical capacity from the Issystem CLI. For certain models, when physical capacity is not available, it is calculated as the sum of all the drives capacity.
Allocated
Allocated storage is physical storage consumed, including parity overhead and system overhead. A gap between raw and allocated capacity may indicate unused capacity. This is calculated as physical capacity minus physical free capacity as obtained from Issystem CLI when available.
Hot Spare
Total capacity of hot spare drives.
Available
Total raw capacity of the array that has not been allocated. 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 array/cluster that has not been assigned to a host and that is available for provisioning. This percentage is a better capacity indicator than the number shown as Available Size.
Raw 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.
#MDisks
The number of MDisks associated with this array.
Total MDisk Capacity
Total MDisk (block storage) capacity
Managed Space
MDisks that are in Managed mode; click on the #MDisks to view the IBM SVC MDisk Summary, which lists the MDisks and modes
UnManaged Space
MDisks that are in UnManaged mode; click on the #MDisks to view the IBM SVC MDisk Summary, which lists the MDisks and modes.
MDisk 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.
# MDisk Groups
The number of managed disk groups for the VDisks
Space in MDisk Groups
The capacity in the MDisk groups, derived from the SVC cluster pool capacity.
Space Allocated to VDisks
The amount of MDisk capacity that has been allocated to VDisks
Space Available in MDisk Groups
MDisk Group total capacity minus the space allocated to VDisks. Note that some space may be reserved for use by SVC.
MDisk Group Usage
Mouse over the thermometer to view the percentage, derived from the Total MDisk Capacity divided by the Managed Space.
# VDisks
The number of VDisks associated with this array
Total VDisk Copy Capacity
Virtual capacity, including mirrors
Total VDisk Capacity
Virtual capacity, excluding mirrors
Total Used Capacity
Total VDisk used capacity
% Over-Allocation
When this value is greater than 100%, it indicates that the VDisk is space-efficient. The percentage represents the ratio of virtual to real capacity.
# VDisks Allocated to Hosts
The number of VDisks allocated to hosts
Alloc VDisk Capacity
The amount of VDisk capacity that has been presented to hosts
# VDisks Unallocated
The number of VDisks that have yet to be presented to hosts
UnAlloc VDisk Capacity
The amount of VDisk capacity that has yet to be presented to hosts
VDisk Usage
Mouse over the thermometer to view the percentage, derived from the Total Used Capacity divided by the Total VDisk Copy Capacity
How IBM SVC Capacity Values Are Derived
The following diagram illustrates how APTARE IT Analytics represents specific capacity values, such as Copy Capacity and Free Space.