vCloud Datastores Test

The vCloud Director relies heavily on vSphere datastores to provide provide storage for virtual machine files and other files necessary for virtual machine operations. Unavailability of a datastore or the lack of storage space in a datastore can severely hamper virtual machine operations and can consequently delay or suspend resource delivery by the vCloud Director. By keeping constant tabs on the availability and space usage by each datastore managed by the target vCloud Director Cell, this test proactively alerts you to potential space contentions on a datastore.

Target of the test : A vCloud Director Cell

Agent deploying the test : An internal/remote agent

Outputs of the test : One set of results for each datastore managed by the vCloud Director Cell being monitored.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The host for which the test is being configured.

Port

Specify the port at which the specified host listens in the Port text box. By default, this is NULL.

vCloud Director User

Specify the name of the user with Administrator access to the target vCloud Director Cell.

vCloud Director Pass

Enter the password of the specified vCloud Director User.

Confirm password

Confirm the password by retyping it here.

SSL

By default, the vCloud Director Cell is SSL-enabled. Accordingly, the SSL flag is set to Yes by default.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Physical disk capacity

Indicates the total capacity of this datastore.

GB

 

Used space

Indicates the amount of space that is currently used in this datastore.

GB

Ideally, the value of this measure should be low. Compare the value of this measure across datastores to know which datastore is utilizing the maximum storage space.

Free space

Indicates the amount of space that is currently available for use in this datastore.

GB

A high value is desired for this measure. Compare the value of this measure across datastores to identify the datastore with the least free space.

Physical disk space usage

Indicates the percentage of disk space in this datastore that is in use currently.

Percent

A consistent increase in the value of this measure count point to a space contention on a datastore.

Allocated space

Indicates the amount of physical space provisioned by an administrator for this datastore i.e., the storage size upto which the files can be stacked in this datastore.

GB

 

Physical disk allocated space usage

Indicates the percentage of physical disk space that is provisioned for this datastore.

GB

If a datastore shows signs of a space drain, then, you may want to check the value of this measure for that datastore to know whether it is owing to improper space allocation to that datastore.

Request space

Indicates the amount of space requested for the functioning of the vCloud Director VMs on this datastore.

GB

 

Requested space usage

Indicates the percentage of space requested for the functioning of the vCloud Director VMs on this datastore.

Percent

 

Is enabled?

Indicates whether/not this datastore is enabled.

 

This measure reports a value Yes if the datastore is enabled with the vCloud Diirector, and a value No if the datastore is not enabled.

The numeric values for the above mentioned states are represented in the table below:

State Numeric Value
Yes 1
No 0

Note:

By default, this measure reports the above-mentioned States while indicating whether this datastore is enabled with the vCloud Director or not. However, in the graph of this measure, states will be represented using their corresponding numeric equivalents only.

Is busy?

Indicates whether/not this datastore is busy.

 

This measure reports a value Yes if the datastore is busy, and a value No if the datastore is not busy.

The numeric values for the above mentioned states are represented in the table below:

State Numeric Value
Yes 1
No 0

Note:

By default, this measure reports the above-mentioned States while indicating whether this datastore is busy or not. However, in the graph of this measure, states will be represented using their corresponding numeric equivalents only.