Array Capacity Utilization Reports > IBM Array Detail
  
Version 10.3.00P13
IBM Array Detail
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Next, click an Array.
See Understanding IBM Enterprise Storage Capacity Calculations.
 
IBM Storage System Summary
Storage Unit
The Storage Unit ID contains the manufacturer, machine type, and serial number.
Storage Image
The Storage Image ID contains the manufacturer, machine type, and serial number.
Model
The storage unit model.
State
State of the storage unit: online, offline, resuming, quiescing, quiesce exception, forced quiescing, fenced, discovery.
Product
Storage Unit vendor.
# FC Ports
The # of Fibre Channel ports links to the Array Port Utilization report. Note that the # of FC ports may not match the number of rows shown in the drilldown report, as the Port Utilization report lists all the hosts connected to each port.
# Disks
Number of disks for this storage unit
Array Site Used
Amount of array storage used by the Array Site
# of Hosts
Number of hosts mapped to this array. Links to the Host Capacity & Utilization
Host Usage
Amount of capacity used by hosts
Raw Capacity
Capacity
Total raw or physical capacity. For IBM Arrays: Total array capacity derived from the physical DDMs (disk drive modules); specifically, the DDM usage in the array site
Allocated
Allocated storage is physical storage consumed, including parity overhead and system overhead. A gap between raw and allocated capacity may indicate unused capacity, such as drives in a rack that are not in use. For IBM Arrays: Amount of capacity that has been allocated is derived from DDM usage for array members and spares
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. For IBM Arrays: Amount of capacity that is free, derived from unassigned and unconfigured DDMs
Raw Capacity Usage
Mouse over the thermometer to view the usage percentage
Array Site Capacity
# of Array Sites
The number of array sites to which this array belongs. Links to the IBM Array Site Summary
Array Site Capacity
Sum of the capacity of all the associated array sites, derived from the capacity of the disks in each array site
Array Site Used
Sum of the array site capacity that is in used—that is, “assigned” to an array
Array Site Available
Array Site storage that has not been allocated—that is, “unassigned” to an array
Array Site Usage
Mouse over the thermometer to view the usage percentage
Raw Array Capacity
# of Arrays
Links to the IBM Array Summary
Array Capacity
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. This is raw array capacity.
Array Used
If an array is assigned to a rank, it is “used”
Array Available
Array capacity that is not part of a rank is “available”
Array Usage
Mouse over the thermometer to view the usage percentage.
Rank Capacity
# of Ranks
The number of ranks links to the IBM Rank Summary
Total Capacity
Sum of the capacity of all ranks
Used Capacity
Capacity assigned to an extent pool
Available Capacity
Capacity not assigned to an extent pool
Rank Usage
Mouse over the thermometer to view the percentage of the ranks that have been allocated.
Extent Pool Capacity
# of Extent Pools
Links to the IBM Extent Pool Summary; both FB and CKD are included in this number.
FB Extent Pool Capacity
The sum of the capacity of all the fixed block extents in the extent pool; For FB, an extent is 1 GB.
FB Extent Pool Used
The amount of fixed block extent pool storage in assigned to a logical volume
FB Extent Pool Available
The fixed block extent pool storage that is not assigned to a logical volume
FB Extent Pool Usage
Mouse over the thermometer to view the percentage of the fixed block extent pool that is allocated.
CKD Extent Pool Capacity
The sum of the capacity of all the CKD extents in the extent pool; For CKD, an extent is 1 cylinder (.92 GB).
CKD Extent Pool Used
The amount of the CKD extent pool storage assigned to a logical volume.
CKD Extent Pool Available
The CKD extent pool storage that is not assigned to a logical volume.
CKD Extent Pool Usage
Mouse over the thermometer to view the percentage of the CKD extent pool that is allocated.
Logical Volumes
This section provides the LUN mapping for determining capacity and usage.
# of FB Volumes
Links to the LUN Utilization Summary.
Total FB Capacity
Sum of the capacity of all the fixed block volumes for this array.
# of Allocated FB
Links to the LUN Utilization Summary showing a list of allocated LUNs.
FB Allocated Capacity
Sum of all the fixed block volume capacity that has been allocated.
# of Unallocated FB
The number of unallocated fixed block volumes.
FB Unallocated Capacity
The fixed block capacity that is not in allocated.
# of CKD
Number of CKD volumes.
CKD Capacity
Sum of the capacity of all the CKD volumes for this array.
Top 3 of n Ranks
Click on the link to view the complete list of Ranks.
 
Name
Rank name links to the IBM Rank Summary.
Usage
Used Extents in the Rank.
Total Extents
Total Extents in the Rank.
Available
Extents in this Rank that are available for allocation in the Extent Pools; If the available amount equals the total amount, it indicates that the rank is not allocated to any Extent Pools.
Top 3 of n Extent Pools
Click on the link to view the complete list of Extent Pools.
Either 1 or 2 Ranks can comprise an Extent Pool. When it is a 1-to-1 relationship, the Extent Pool capacity values will look identical to the Rank values. Otherwise, they will be double the Rank values. All Ranks in an Extent Pool are of the same RAID type.
 
Name
Extent Pool name links to the IBM Extent Pool Summary.
Usage
Amount of Extent capacity that is in use.
Total Extents
Total Extent capacity.
Available
Available Extent capacity.
IBM Storage System Capacity Detail
Mouse over the bars to view the capacity totals in GB.
IBM Storage System FB Volumes
A pie chart represents fixed block volumes:
Ungrouped
Unmapped
Mapped
Mouse over the pie segments to view percentages.
Capacity and Object Usage Forecast
Graphs represent forecasted usage for the following objects:
Array Sites
Arrays
Extent Pools
Ranks