Lun Space Test

This test auto-discovers the LUNs configured on the NetApp Cluster, monitors the space utilization of each LUN, and proactively alerts administrators on potential space crunch on the LUNs.

Target of the test : A NetApp Cluster

Agent deploying the test : An external/remote agent

Outputs of the test : One set of results for each LUN configured on the NetApp Cluster being monitored.

Configurable parameters for the test
Parameters	Description
Test Period	How often should the test be executed.
Host	The IP address of the storage controller cluster.
Port	Specify the port at which the specified host listens in the Port text box. By default, this is NULL.
User	Here, specify the name of the user who possesses the readonly role. If such a user does not pre-exist, then, you can create a special user for this purpose using the steps detailed in Creating a New User with the Role Required for Monitoring the NetApp Cluster.
Password	Specify the password that corresponds to the above-mentioned User.
Confirm Password	Confirm the Password by retyping it here.
Authentication Mechanism	In order to collect metrics from the NetApp Cluster, the eG agent connects to the ONTAP management APIs over HTTP or HTTPS. By default, this connection is authenticated using the LOGIN_PASSWORD authentication mechanism. This is why, LOGIN_PASSWORD is displayed as the default Authentication Mechanism.
Use SSL	Set the Use SSL flag to Yes, if SSL (Secured Socket Layer) is to be used to connect to the NetApp Unified Storage System, and No if it is not.
API Report	By default, in most environments, NetApp Cluster listens on port 80 (if not SSL-enabled) or on port 443 (if SSL-enabled) only. This implies that while monitoring the NetApp Cluster, the eG agent, by default, connects to port 80 or 443, depending upon the SSL-enabled status of the NetApp Cluster - i.e., if the NetApp Cluster is not SSL-enabled (i.e., if the Use SSL flag above is set to No), then the eG agent connects to the NetApp Cluster using port 80 by default, and if the NetApp Cluster is SSL-enabled (i.e., if the Use SSL flag is set to Yes), then the agent-NetApp Cluster communication occurs via port 443 by default. Accordingly, the API Port parameter is set to default by default. In some environments however, the default ports 80 or 443 might not apply. In such a case, against the API Port parameter, you can specify the exact port at which the NetApp Cluster in your environment listens, so that the eG agent communicates with that port for collecting metrics from the NetApp Cluster.
Exclude Aggregates	If you wish to exclude certain aggregates from the scope of monitoring, specify a list of comma-separated aggregates in this text box. By default, none will be displayed here.
Timeout	Specify the duration (in seconds) beyond which the test will timeout if no response is received from the device. The default is 120 seconds.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Total space	Indicates the total size of this LUN.	GB
Available space	Indicates the space that is currently available for use in this LUN.	GB	A high value is desired for this measure. If the value of this measure is decreasing gradually, then it indicates that the LUN is currently running out of space.
Max used space	Indicates the maximum space used by this LUN.	GB	If the value of this measure is close to that of the Total space measure, it indicates potential space crunch in the LUN. Administrators may increase the size of the LUN so that the space utilization of the LUN is optimal.
Percentage max used space	Indicates the percentage of maximum space used by this LUN.	Percent	A high value for this measure indicates that the LUN is running out of space.