Datastore

In this article

    Object

    Counter

    Instance

    Definition

    VMDatastore

    deviceReadLatency

    Host name:disk name

    The average amount of time taken to complete a read from the physical device. This is the time from the device to the host HBA (in milliseconds).

    VMDatastore

    deviceWriteLatency

    Host name:disk name

    The average amount of time taken to complete a write to the physical device. This is the time from the host HBA to the device (in milliseconds).

    VMDatastore

    diskPressure

    _Total

    The ratio of allocated storage to storage capacity, expressed as a percentage. This percentage can be greater than 100 if thin-provisioning (storage overcommit) is used extensively. See related metric ProvisionedGB.

    VMDatastore

    freeGB

    _Total

    Amount of datastore space that is not currently used.

    VMDatastore

    IOPS

    Host name

    Aggregate number of I/O operations on the datastore per host.

    VMDatastore

    IOPS

    _Total

    Number of input/output operations per second, calculated as total of (reads + writes) divided by the collection interval.

    VMDatastore

    IOPS

    Host name:disk name

    Aggregate number of I/O operations on the datastore per second.

    VMDatastore

    MaxDeviceLatency

    _Total

    Highest physical device latency value on the datastore during the collection interval.

    VMDatastore

    MaxDeviceReadLatency

    _Total

    Highest physical device latency value on the datastore (in milliseconds) for read operations.

    VMDatastore

    MaxDeviceWriteLatency

    _Total

    Highest physical device latency value on the datastore (in milliseconds) for write operations.

    VMDatastore

    ProvisionedGB

    _Total

    Amount of space in GB that is provisioned (allocated) on the datastore. This can exceed the actual capacity of the datastore if thin-provisioning is used extensively (storage overcommit).

    VMDatastore

    readRateKB/s

    _Total

    Average read rate per second for the datastore (in KB).

    VMDatastore

    unknownFilesGB

    _Total

    Amount of storage space (in GB) occupied by files unknown to vCenter (orphaned snapshots, orphaned VMs, or manually uploaded files such as ISO, etc.) on the datastore.

    VMDatastore

    usedPct

    _Total

    Percentage of space in use on the VMFS. That is, diskUse vs. diskSize.

    VMDatastore

    VMObservedLatency

    _Total

    The average datastore latency as seen by virtual machines.

    VMDatastore

    vmTotal

    _Total

    Number of VMs whose disks reside on the datastore. This number includes both virtual machines and VM templates.

    VMDatastore

    writeRateKB/s

    _Total

    Average write rate per second for the datastore (in KB).

    SIOC/SDRS-Datastore

    Object

    Counter

    Instance

    Definition

    VMDatastore

    SDRS Normalized Read Latency

    _Total

    Storage DRS datastore normalized read latency.

    VMDatastore

    SDRS Normalized Write Latency

    _Total

    Storage DRS datastore normalized write latency.

    VMDatastore

    SDRS Outstanding Read Requests

    _Total

    Average number of outstanding read requests to the datastore during the collection interval.

    VMDatastore

    SDRS Outstanding Write Requests

    _Total

    Average number of outstanding write requests to the datastore during the collection interval.

    VMDatastore

    SDRS Read IOPS

    _Total

    Average number of disk read commands completed on each datastore, per second.

    VMDatastore

    SDRS Write IOPS

    _Total

    Average number of disk write commands completed on each datastore, per second.

    VMDatastore

    SIOC Aggregated IOPS

    _Total

    Average number of I/O operations per second on the datastore, aggregated across all hosts and virtual machines accessing the datastore.

    VMDatastore

    SIOC Max Queue Depth

    _Total

    Maximum queue depth set in the HBA driver of all the hosts.

    VMDatastore

    SIOC Normalized Latency

    _Total

    Latency that is monitored by Storage I/O Control to detect congestion on the datastore.

    Host COS Partition

    Object

    Counter

    Instance

    Definition

    VMDatastore

    freeMB

    partition name

    The amount of free space in MB on the COS partition.

    VMDatastore

    usedPct

    partition name

    The amount of free space in percent on the COS partition.