Array Capacity Utilization Reports > IBM Array Summary
Version 9.2.01
IBM Array Summary
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Understanding IBM Enterprise Storage Capacity Calculations
Capacity values for IBM arrays may appear different from what is reported by the IBM CLI or IBM Tools, as IBM uses a decimal gigabyte—10^9 bytes, while StorageConsole uses 1024 for a KB when converting to GB.
For FB open systems hosts, an extent is 1 GB. For CKD IBM zSeries or S/390 systems, an extent is 1 cylinder (.92 GB).
In the Scope Selector, you can narrow the report output by selecting values for the following criteria:
State: Assigned, Unassigned, Unavailable
RAID Types: 5, 6, 10
Disk Classes: ENT, NL
The Array ID. An Array (also known as a RAID Array) is an Array Site that has been formatted to a specific RAID format.
Storage Array
The physical storage array system
Array State
assigned, unassigned, unavailable. Indicates if the data is assigned to a Rank.
RAID 5, 6, or 10
# of Array Sites
Drill down to the IBM Array Site Summary for details. An array can have 1 or 2 array sites.
Drill down to the IBM Extent Pool Summary.
DA Pair
Device adapter pair number—the physical I/O enclosure location. If the DA Pair is an even number, it indicates the first DA pair in the enclosure; an odd number indicates the second DA pair in the enclosure
The capacity of the Array (also known as the RAID Array)—one or more Array Sites can comprise an array and the capacity shown is the total for all the Array Sites in the array.
Disk Class
Enterprise fibre channel drives (ENT) or Nearline ATA drives (NL)