Storage domains Test

A storage domain represents a logical storage entity that provides persistent storage for virtual machine disks, templates, snapshots, and ISO images. Storage domains are attached to datacenters and are used by OLVM Manager to manage and allocate storage resources required for virtual machine operations. OLVM Manager coordinates storage access and enforces storage policies to ensure that virtual machines can reliably read and write data during normal operations.

Storage domains may face issues such as insufficient free space, high space utilization, storage unavailability, or misconfigured master roles. These issues can prevent virtual machine creation, snapshot operations, migrations, or even cause running virtual machines to experience I/O delays or failures. Such conditions directly impact end users by degrading application performance, causing VM downtime, or interrupting critical workloads. Continuous monitoring of storage domain metrics helps administrators detect capacity exhaustion, availability problems, and abnormal usage patterns at an early stage.

This test monitors each storage domain in every datacenter and reports metrics such as total capacity, used and free space, committed space, space utilization, master status, and availability. By providing timely insights into storage health and capacity trends, the test helps administrators take proactive corrective actions, avoid service disruptions, and ensure stable and efficient operation of the OLVM-managed virtual infrastructure.

Target of the Test: An OLVM Manager 4.x

Agent running the test: A remote agent

Output of the test: One set of results for each storage domain in each datacenter configured on the monitored OLVM Manager.

Configurable parameters for the test

Parameter	Description
Test period	How often should the test be executed.
Host	The host for which the test is to be configured.
Port	The port at which the specified host listens. The default port is 443.
Management Server User, and Management Server Password	To pull out the desired metrics from the OLVM Manager 4.x, this test has to be configured with the privileges of a user who has been assigned the Userrole. Specify the user name and password of this user in the Management Server User and Management Server Password text boxes, respectively.
Confirm Password	Confirm the Management Server Password by retyping it here.
Management Server Domain	Specify the domain to which the OLVM Manager belongs. By default, internal is displayed here.
SSL	If the OLVM Manager to which the eG agent should connect is SSL-enabled, then set this flag to Yes. If not, set it to No.

Measurements made by the test

Measurement	Description	Measurement Unit	Interpretation
Is master storage domain?	Indicates whether or not this storage domain is the master storage domain in this data center.		This measure will report the value Yes if the storage domain is the master, and No if it is the slave. The numeric values that correspond to the Yes/No values above are as follows: Measure Value Numeric Value Yes 1 No 0 Note: By default, this measure reports one of the Measure Values listed in the table above. The graph of this measure however will represent the storage domain type (master/slave) using the numeric equivalents - ‘0’ or '1’.
Storage domain capacity	Indicates the current capacity of this storage domain.	GB
Used space	Indicates the amount of storage space currently utilized by this domain.	GB	Ideally, the value of this measure should be low.
Free space	Indicates the amount of storage space that is  currently available for use in this storage domain.	GB	Ideally, the value of this measure should be high.
Committed space	Indicates the amount of storage space currently committed in this storage domain.	GB
Storage domain space usage	Indicates the percentage of total storage space in this storage domain that is currently being utilized.	Percent	Compare the value of this measure across domains to identify the domain that is experiencing a space drain. A high value or a consistent increase in this value is a cause for concern, as it indicates the steady erosion of storage space from a storage domain. If a storage domain runs out of space, it will affect the operations of all VMs that use that domain.
Storage domain availability in datacenter	Indicates whether or not this storage domain is currently available in the datacenter.	Percent	While the value 0 indicates that the storage domain is unavailable, the value 100 indicates that the storage domain is currently available. If a storage domain used by a VM is rendered unavailable, users will be denied access to that VM.