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 | Links to the
LUN Utilization Summary. |
% 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 |