![]() On each call I seemed to get an error, stating “optional value not set”. Next problem! The “optional value not set” error ![]() Once it has these it calls the QueryPerf method to get the actual statistical data. The script uses a number of methods on the PerformanceManager object, to retrieve the counterId and available instances for the metrics. ![]() No problem, I have an older post, called Get-Stat2 : another way of getting at the statistical data, which I should be able to adapt to retrieve datastore statistics. Which brings us immediately to the first problem, the current Get-Stat cmdlet doesn’t accept datastore entities. In this case we obviously want the metrics for the datastore. ![]() The SDK Reference, on the Storage Capacity page, mentions that these metrics are available for virtual machines and for datastores. But was it ? As it turned out there are a few gotchas! Getting there With the, and metrics this should be a simple script. Can one extract the datastore statistics, that are used for the space utilization graphs in the vSphere Client, with PowerCLI ? The graph in question, which you find in the Datastores Inventory view under the Performance tab, looks something like this.Ī quick browse through the available metrics, on the SDK Reference PerformanceManager page, showed that these metrics are indeed available. These alerts can be enabled during discovery of that parent device or from the Update Inventory page, by enabling the "Raise alerts for Physical NIC & Host Bus Adapter" option.An interesting question came up in the PowerCLI Community. In addition to this, you can also enable Physical NIC/Host Bus Adapter based alerts in OpManager for your VMware parent devices. Note: OpManager only triggers alarms based on VMware events, and they have to be manually cleared once the issue/notification has been taken care of. You can view the complete list of ESX host/vCenter Events that are supported by OpManager, under Settings → Monitors → VMware Events. Table 2: Few of the VCenter / ESX hosts' Events supported by OpManager S.No. VirtualMachine Network Packets Transmitted Table 1: List of few Threshold Monitors for critical performance indicators related to host, datastore & VM's supported by OpManager S.No. You can also view and add the performance monitors for hosts/VMs by clicking on ' Add Monitors' under their corresponding Device Templates.To view the list of Performance monitors for Datastore, scroll down to the VMWare - Datastore Monitors section.To view the list of Performance monitors for VMs, scroll down to the VMware - VM Monitors section.To view the list of Performance monitors for VMware hosts alone, scroll down to the VMware-Host Monitors section.This will display a list of all performance monitors available in OpManager. Under the Performance Monitors tab, click on 'Actions' and then on 'Add Performance Monitor'.Go to the Monitors tab in the VMware host's snapshot page (Navigate to Inventory -> Devices and then click on a device to view its snapshot page.).To view the complete list of VMware monitors, To change the pre-set threshold values for each performance monitor, go to the Monitors section under the snapshot page of the host / VM / Datastore. Apart from these events, OpManager also monitors threshold for critical performance indicators and raises alerts. Currently we support important events, and this list is updated every release. OpManager fetches events from each vCenter/ESX Host, similar to SNMP traps.
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