Exadata Physical Disks Test
Each Exadata storage cell node contains 12 physical disks. A physical disk is an actual device in storage cell that constitutes a single disk drive spindle. These physical disks are connected to the RAID controller. Multiple LUNs can be provisioned from a physical disk. When a physical disk fails all of a sudden, users may be deprived access to the data available in the physical disk. To avoid such inconvenience to the users and to ensure that the data is available to the users round the clock, it is essential to monitor the status of the physical disks periodically. The Exadata Physical Disks test helps administrators in this regard!
This test auto-discovers the physical disks on the target Oracle Exadata Storage Server and reports the status of each physical disk. Using this test, administrators can not only identify failed disks, but can also predict potential failure of a disk, so that efforts can be undertaken to avert the same. This test also reports the count of LUNs provisioned using each physical disk.
Target of the test : Oracle Exadata Storage Server
Agent deploying the test : A remote agent
Outputs of the test : One set of results for each physical disk on the target Oracle Exadata Storage Server that is being monitored
Parameter | Description |
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Test period |
How often should the test be executed |
Host |
The IP address of the host for which this test is to be configured. |
Port |
The port number at which the specified host listens. By default, this is NULL. |
Username, Password and Confirm Password |
By default, this test uses the Cell Control Command-Line Interface (CellCLI) to pull out the required metrics. To use the CLI, the test first needs to connect to the target storage server via SSH, and then run commands using CLI. For running the commands, this test requires the credentials of a cellmonitor user. Specify the login credentials of such a user in the Username and Password text boxes and confirm the Password by retyping it in the Confirm Password text box. |
SSH Port |
This test uses the Cell CLI to pull metrics from the target Oracle Exadata Storage Server. To run the CLI commands, this test first needs to establish an SSH connection with the target storage server. To enable the test to establish this connection, specify the SSH Port here. |
Timeout |
Specify the time duration for which this test should wait for a response from the storage system in the Timeout text box. By default, this is 120 seconds. |
Measurement | Description | Measurement Unit | Interpretation | ||||||||||||||||
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Disk status |
Indicates the current status of this physical disk. |
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The table below indicates the values that this measure can report and their corresponding numeric equivalents:
Note: By default, this measure reports the above-mentioned Measure Values while indicating the current status of the physical disk. However, in the graph of this measure, the status of the physical disk will be represented using the corresponding numeric equivalents only. |
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No of LUNs |
Indicates the number of LUNs provisioned using this physical disk. |
Number |
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