HP 3PAR Disk Capacity Test

A disk that is currently offline or a disk that has failed will not be able to cater to the user requests thus causing prolonged delays in data access for users. Nodes are the primary building block of the HP 3PAR storage system. Each node has an array of disks attached which are managed by that node. The number of disks attached to a node depends on the performance requirement of the system.

The health of each node and capacity availability of the entire system depends on the status of disks attached to each node. This test provides the ability for the administrator to drill down to each node level to understand capacity availability and take corrective actions for capacity planning if required.

The purpose of this test is to check the status of each disk attached to the node. It monitors each disk for current availability status and capacity.

Target of the test : A HP 3PAR Storage system

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each disk being monitored.

Configurable parameters for the test

Parameter	Description
Test Period	How often should the test be executed.
Host	The IP address of the Storage system.
Port	The port number at which the Storage system listens. The default is NULL.
User and Password	By default, this test executes SSH commands on the target storage system to collect the required metrics. Specify the credentials of a user who has the right to execute SSH commands on the storage device and pull out metrics. To monitor the HP 3PAR Storage system,  you will have to provide the credential of a user who has been assigned the Browse role. To know how to create a user with Browser role, refer to How to Create a New User with Browser Role?
Confirm Password	Confirm the password by retyping it here.
SSH Port	The Secured Shell (SSH) port number at which the Storage system listens. The default is 22.
Jar	By default, this test uses the wbem.jar for metrics collection. This is why, the wbem option is selected by default. If you want the test to use the sblimCIMClient.jar for collecting metrics, choose the sblim option here.
Timeout (Seconds)	Specify the duration (in seconds) beyond which this test should time out in the Timeout text box. The default is 60 seconds.

Measurements made by the test

Measurement	Description	Measurement Unit	Interpretation
State	Indicates the current state of this disk.	Number	The values that this measure can report and the states they indicate are tabulated below: Measure Value Numeric Value Normal 100 New 90 Degraded 50 Failed 40 Note: By default, this measure reports the above-mentioned States while indicating the current state of this disk. However, the graph of this measure will be represented using the corresponding numeric equivalents of the States as mentioned in the table above.
Total capacity	Indicates total capacity available on this disk. This is the sum of the capacity used and the capacity available.	TB	If majority of disks are offline the total capacity of the node will be reduced. If he available capacity is below threshold you can start replacing the disks.
Free capacity	Indicates the free capacity available for use on this disk.	TB	If the free size available on the node is decreasing rapidly or not sufficient for need, you may need to take action to add more capacity.
Used capacity	Indicates the capacity already used on this disk.	TB
Free capacity percentage	Indicate the percentage of free space available on this disk.	Percent	If the percentage is near 100, the current node will not be able to take additional writes, that will increase load on other nodes