OmsaStorageMonitor

The OmsaStorageMonitor lets you monitor your Dell OpenManaged servers RAID array status. This monitor supports the following OIDs from the STORAGEMANAGEMENT-MIB:

virtualDiskRollUpStatus                     .1.3.6.1.4.1.674.10893.1.20.140.1.1.19
arrayDiskLogicalConnectionVirtualDiskNumber .1.3.6.1.4.1.674.10893.1.20.140.3.1.5
arrayDiskNexusID                            .1.3.6.1.4.1.674.10893.1.20.130.4.1.26
arrayDiskLogicalConnectionArrayDiskNumber   .1.3.6.1.4.1.674.10893.1.20.140.3.1.3
arrayDiskState                              .1.3.6.1.4.1.674.10893.1.20.130.4.1.4

The virtualDiskRollUpStatus value checks the status of the disk array. If the result of the virtualDiskRollUpStatus is not 3, the monitor is marked as down.

Table 1. Possible result of virtual disk rollup status
Result	State description	Monitor state in Horizon
1	other	DOWN
2	unknown	DOWN
3	ok	UP
4	non-critical	DOWN
5	critical	DOWN
6	non-recoverable	DOWN

You need to know the maximum number of possible logical disks you have in your environment. For example, if you have three RAID arrays, you need a service poller for each logical disk array.

To give more detailed information in case of a disk array error, the monitor tries to identify the problem using the other OIDs. These values enrich the error reason in the service down event. The disk array state is resolved to a human-readable value as in the following status table.

Table 2. Possible array disk state errors
Value	Status
1	Ready
2	Failed
3	Online
4	Offline
6	Degraded
7	Recovering
11	Removed
15	Resynching
24	Rebuilding
25	noMedia
26	Formatting
28	Running Diagnostics
35	Initializing

Monitor facts

Class Name

org.opennms.netmgt.poller.monitors.OmsaStorageMonitor

Configuration and use

Table 3. Optional monitor-specific parameters for the OmsaStorageMonitor
Parameter	Description	Default
virtualDiskNumber	The disk index of your RAID array.	1
port	The TCP port where OpenManage listens.	From snmp-config.xml

This monitor implements the Common Configuration Parameters.

Examples

Sample configuration on how to configure the monitor in poller-configuration.xml. The RAID array monitor for your first array is configured with virtualDiskNumber = 1 and may look like this:

<service name="OMSA-Disk-Array-1" interval="300000" user-defined="false" status="on">
    <parameter key="retry" value="3"/>
    <parameter key="timeout" value="6000"/>
    <parameter key="virtualDiskNumber" value="1"/>
</service>

<monitor service="OMSA-Disk-Array-1" class-name="org.opennms.netmgt.poller.monitors.OmsaStorageMonitor"/>

If there is more than one RAID array to monitor, you need an additional configuration. In this case, virtualDiskNumber = 2.

<service name="OMSA-Disk-Array-2" interval="300000" user-defined="false" status="on">
    <parameter key="retry" value="3"/>
    <parameter key="timeout" value="6000"/>
    <parameter key="virtualDiskNumber" value="2"/>
</service>

<monitor service="OMSA-Disk-Array-2" class-name="org.opennms.netmgt.poller.monitors.OmsaStorageMonitor"/>