Virtualization Manager Reports > Datastore Utilization Summary
  
Version 10.2.01P10
Datastore Utilization Summary
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The Datastore Utilization Summary gives you the ability to identify what storage is in use and where it is located. Click on the Datastore link to view the Datastore Detail where you can view the Extents and then link to the corresponding Physical Disk Detail. In addition, the Datastore Detail provides a link to the array from which the storage has been provisioned.
Name
The name of the Datastore links to Datastore Detail.
Total Capacity
Total capacity of the datastore.
Used
Total amount of the datastore that is in use, both VM usage and other files.
Free
Amount of the datastore that currently is unused and potentially available.
Usage
Mouse over the thermometer to view the % of the total capacity used.
Total VM Used
Size of the virtual machine, which includes VMDK files, log files, and snapshots; the sum of all the files taking up storage by this VM. This value links to the VM Files Summary report, which lists the usage details. For details about data collection options that impact these values, see Data Collection Options and Datastore Utilization.
VMDK Used
The sum of all virtual disks - VMDK (.vmdk files), that are occupying space. This sum does not include snapshot metadata files, however, other outdated snapshot data may be in vmdk files. For this reason, VMDK Used may exceed VM Disk Capacity, the amount that was configured when the VM was created.
VM Disk Capacity
Amount of storage that was provisioned to the Guest OS when the virtual disk was originally created for the VM. For thin storage, this can be larger than the Datastore capacity associated with the VM.
VM Not In Inventory
Indicates VMs that are not currently in the inventory, but are taking up space in the Datastore. These are VMs that are not visible in VMware vCenter. Click this link to view the VM Files Summary. This value will be zero if data collection is configured to collect data from only datastores associated with VMs in the inventory. For details about data collection options that impact these values, see Data Collection Options and Datastore Utilization.
# Sharing VM Servers
The number of hosts configured to access this datastore.
# VMs
Number of virtual machines stored on this datastore.
# Extents
The number of extents that were added to expand the datastore (up to 32 physical storage extents).
# Disks
The number of disks used by this datastore (up to 32 physical disks).
# Arrays
The number of arrays from which this datastore gets physical storage.
Is Thin
Indicates whether or not the datastore supports thin provisioning on a per file basis. When thin provisioning is used, backing storage is lazily allocated.
This is supported by VMFS3. VMFS2 always allocates storage eagerly. Thus, this value is false for VMFS2. Most NAS systems always use thin provisioning. They do not support configuring this on a per file basis, so for NAS systems this value is also false.
VMDK Max File Size
Some of the capacity of a virtual disk from the point of view of a virtual machine.
Data Collection Options and Datastore Utilization
A Virtualization Manager data collection policy can be configured to gather data as follows:
• Inventory (default option): Collect only the data associated with the VMs in the inventory.
• Collect all files in datastore: Perform a full scan of the datastore to discover files that are resident on the datastore, but not associated with a VM in the inventory. This option finds files that may be invisible to VMware, but that are consuming space on the datastore.
 
 
When the Inventory option is configured in the data collector policy, it has the following impact on fields shown in this report:
• VM Not In Inventory will be zero.
• Total VM Used will be reduced by the amount that would have been collected as VM Not In Inventory if an all files collection had been done.