vRealize Operations Manager collects capacity, device, and summary metrics for datastore objects.

Capacity metrics can be calculated for datastore objects. See Capacity and Project-Based Metrics.

Capacity Metrics for Datastores

Capacity metrics provide information about datastore capacity.

Table 1. Capacity Metrics for Datastores

Metric Key

Metric Name

Description

capacity|available_space

Available Space (GB)

Available space in gigabytes.

capacity|contention

Data Store Capacity Contention

Datastore capacity contention.

capacity|provisioned

Provisioned (GB)

Datastore size.

capacity|total_capacity

Total Capacity (GB)

Total capacity in gigabytes.

capacity|used_space

Used Space (GB)

Used space in gigabytes.

capacity|workload

Workload (%)

Capacity workload.

capacity|uncommitted

Uncommitted Space (GB)

Uncommitted space in gigabytes.

capacity|consumer_provisioned

Total Provisioned Consumer Space

Total Provisioned Consumer Space.

capacity|usedSpacePct

Used Space (%)

Percentage of datastore space used.

Device Metrics for Datastores

Device metrics provide information about device performance.

Table 2. Devices Metrics for Datastores

Metric Key

Metric Name

Description

devices|busResets_summation

Bus Resets

Number of bus resets in the performance interval.

devices|commandsAborted_summation

Commands Aborted

Number of disk commands aborted in the performance interval.

devices|commands_summation

Commands Issued

Number of disk commands issued in the performance interval.

devices|totalLatency_average

Disk Command Latency (ms)

Average time taken for a command from the perspective of a guest operating system. This metric is the sum of Kernel Disk Command Latency and Physical Device Command Latency metrics.

devices|totalReadLatency_average

Disk Read Latency (ms)

Average time taken for a read from the perspective of a guest operating system. This metric is the sum of the Kernel Disk Read Latency and Physical Device Read Latency metrics.

devices|totalWriteLatency_average

Disk Write Latency (ms)

Average amount of time for a write operation to the datastore. Total latency is the sum of kernel latency and device latency.

devices|kernelLatency_average

Kernel Disk Command Latency (ms)

Average time spent in ESX Server V. Kernel per command.

devices|kernelReadLatency_average

Kernel Disk Read Latency (ms)

Average time spent in ESX host VM Kernel per read.

devices|kernelWriteLatency_average

Kernel Disk Write Latency (ms)

Average time spent in ESX Server VM Kernel per write.

devices|number_running_hosts

Number of Running Hosts

Number of running hosts that are powered on.

devices|number_running_vms

Number of Running VMs

Number of running virtual machines that are powered on.

devices|deviceLatency_average

Physical Device Command Latency (ms)

Average time taken to complete a command from the physical device.

devices|deviceReadLatency_average

Physical Device Read Latency (ms)

Average time taken to complete a read from the physical device.

devices|queueLatency_average

Queue Command Latency (ms)

Average time spent in the ESX Server VM Kernel queue per command.

devices|queueReadLatency_average

Queue Read Latency (ms)

Average time spent in the ESX Server VM Kernel queue per read.

devices|queueWriteLatency_average

Queue Write Latency (ms)

Average time spent in the ESX Server VM Kernel queue per write.

devices|read_average

Read Rate (KBps)

Amount of data read in the performance interval.

devices|numberRead_summation

Read Requests

Number of times data was read from the disk in the defined interval.

devices|numberReadAveraged_average

Reads per second

Average number of read commands issued per second to the datastore during the collection interval.

devices|usage_average

Usage Average (KBps)

Average use in kilobytes per second.

devices|write_average

Write Rate (KBps)

Amount of data written to disk in the performance interval.

devices|numberWrite_summation

Write Requests

Number of times data was written to the disk in the defined interval.

devices|numberWriteAveraged_average

Writes per second

Average number of write commands issued per second to the datastore during the collection interval.

devices|commandsAveraged_average

Commands per second

Average number of commands issued per second during the collection interval.

devices|deviceWriteLatency_average

Physical Device Write Latency (ms)

Average time taken to complete a write from the physical disk.

Datastore Metrics for Datastores

Datastore metrics provide information about datastore use.

Table 3. Datastore Metrics for Datastores

Metric Key

Metric Name

Description

datastore|totalLatency_average

Disk Command Latency (ms)

The average amount of time taken for a command from the perspective of a Guest OS. This is the sum of Kernel Command Latency and Physical Device Command Latency.

datastore|usage_average

Usage Average (KBps)

Average use in kilobytes per second.

datastore|totalReadLatency_average

Read Latency (ms)

Average amount of time for a read operation from the datastore. Total latency = kernel latency + device latency.

datastore|totalWriteLatency_average

Write Latency (ms)

Average amount of time for a write operation to the datastore. Total latency = kernel latency + device latency.

datastore|demand

Demand

Demand.

datastore|demand_indicator

Demand Indicator

Demand Indicator.

datastore|maxObserved_NumberRead

Max Observed Reads per Second

Maximum observed average number of read commands issued per second during the collection interval.

datastore|maxObserved_Read

Max Observed Read Rate (KBps)

Max observed rate of reading data from the datastore.

datastore|maxObserved_ReadLatency

Max Observed Read Latency (ms)

Max observed average amount of time for a read operation from the datastore. Total latency = kernel latency + device latency.

datastore|maxObserved_NumberWrite

Max Observed Writes per second

Max observed average number of write commands issued per second during the collection interval.

datastore|maxObserved_Write

Max Observed Write Rate (KBps)

Max observed rate of writing data from the datastore.

datastore|maxObserved_WriteLatency

Max Observed Write Latency (ms)

Max observed average amount of time for a write operation from the datastore. Total latency = kernel latency + device latency.

datastore|maxObserved_OIO

Max Observed Number of Outstanding IO Operations

Maximum observed number of outstanding IO operations.

datastore|demand_oio

Outstanding IO requests

OIO for datastore.

datastore|numberReadAveraged_average

Reads per second

Average number of read commands issued per second during the collection interval.

datastore|numberWriteAveraged_average

Writes per second

Average number of write commands issued per second during the collection interval.

datastore|read_average

Read rate

Amount of data read in the performance interval.

datastore|write_average

Write rate

Amount of data written to disk in the performance interval.

About Datastore Metrics for Virtual SAN

The metric named datastore|oio|workload is not supported on Virtual SAN datastores. This metric depends on datastore|demand_oio, which is supported for Virtual SAN datastores.

The metric named datastore|demand_oio also depends on several other metrics for Virtual SAN datastores, one of which is not supported.

  • The metrics named devices|numberReadAveraged_average and devices|numberWriteAveraged_average are supported.

  • The metric named devices|totalLatency_average is not supported.

As a result, vRealize Operations Manager does not collect the metric named datastore|oio|workload for Virtual SAN datastores.

Disk Space Metrics for Datastores

Disk space metrics provide information about disk space use.

Table 4. Disk Space Metrics for Datastores

Metric Key

Metric Name

Description

diskspace|notshared

Not Shared (GB)

Unshared space in gigabytes.

diskspace|numvmdisk

Number of Virtual Disks

Number of virtual disks.

diskspace|provisioned

Provisioned Space (GB)

Provisioned space in gigabytes.

diskspace|shared

Shared Used (GB)

Shared used space in gigabytes.

diskspace|snapshot

Snapshot Space (GB)

Snapshot space in gigabytes.

diskspace|diskused

Virtual Disk Used (GB)

Virtual disk used space in gigabytes.

diskspace|used

Virtual machine used (GB)

Virtual machine used space in gigabytes.

diskspace|total_usage

Total disk space used

Total disk space used on all datastores visible to this object.

diskspace|total_capacity

Total disk space

Total disk space on all datastores visible to this object.

diskspace|total_provisioned

Total provisioned disk space

Total provisioned disk space on all datastores visible to this object.

diskspace|disktotal

Total used (GB)

Total used space in gigabytes.

diskspace|swap

Swap File Space (GB)

Swap file space in gigabytes.

diskspace|otherused

Other VM Space (GB)

Other virtual machine space in gigabytes.

diskspace|freespace

Freespace (GB)

Unused space available on datastore.

diskspace|capacity

Capacity (GB)

Total capacity of datastore in gigabytes.

diskspace|overhead

Overhead

Amount of disk space that is overhead.

Summary Metrics for Datastores

Summary metrics provide information about overall performance.

Table 5. Summary Metrics for Datastores

Metric Key

Metric Name

Description

summary|total_number_hosts

Total Number of Hosts

Total number of hosts.

summary|total_number_vms

Total Number of VMs

Total number of virtual machines.

summary|max_number_vms

Maximum Number of VMs

Maximum number of virtual machines.

summary|workload_indicator

Workload Indicator

Workload indicator.

summary|total_number_clusters

Total Number of Clusters

Total number of clusters.

Template Metrics for Datastores

Table 6. Template Metrics for Datastores

Metric Key

Metric Name

Description

template|used

Virtual Machine used

Space used by virtual machine files.

template|accessTime

Access Time

Last access time.