My name is John Spencer. And I'm a Product Manager within the Dell software group. In this video, I'll give you an overview of Foglight for Storage Management. Foglight for Storage Management provides end-to-end application-to-disk performance monitoring, through the combined analysis of server and storage data.
It bridges the monitoring gap between servers and storage, and it allows server and storage teams to work together, solving issues. I'm going to walk through a brief demonstration of Foglight for Storage Management, so that you see some of the features that achieve these goals.
One of the most common frustrations for server admins with virtual environments is the inability to see beyond their logical data stores and into the physical storage hardware servicing their virtual machines. Foglight for Storage Management provides a graphical interface that allows you to map your storage topology from virtual machine, all the way down to the underlying disks. In this example, we can see a specific virtual machine with disassociated data store and disk extent.
By expanding this vFabric cloud, we can see which HVA ports, switch ports, array ports, array controller, and LUN are connected at this virtual machine. By clicking a particular switch port, we get additional information, such as the name of the physical switch. And if we click on that switch name, we're taken to a switch-level view, with performance and link error rate information for every port on that switch.
Now, let's go back to our topology view. We can get granular detail by clicking any of the elements shown in the topology. By clicking on the LUN, we get additional information, such as the name of the array where it resides. And if we click on that array name, we're taking two an array-level view, where we get performance, capacity, and health metrics, at the controller, port, pool, LUN, and disk level.
Using Foglight for Storage Management, your data stores no longer need to be some mysterious black box. Foglight for Storage Management can map your storage topology from numerous starting viewpoints. In this example, I want to go back to my previous screen and see the topology from the viewpoint of the LUN.
Now I can see every virtual machine that is connected to this particular LUN. This is useful in the instance where a LUN needs to be taken offline for some reason. You can identify which VMs will be affected and react accordingly, to prevent downtime and preserve SLAs.
Foglight for Storage Management has a unique one-click storage troubleshooting feature, that enables you to determine whether slow virtual machine performance is caused by your storage subsystem. Imagine you experienced slow virtual machine performance on September 4, around 2:30 PM. Using our time travel feature, you can scroll back to that exact time frame to see what was happening in your environment when performance was slow.
You can then select the slow virtual machine from a drop-down box, set your latency thresholds, and click the Perform Analysis button. Foglight responds with performance analysis for every data store and RDM attached to that virtual machine. We can see that, during that timeframe you examined, your data store experience latency that exceeded your thresholds.
If the versus threshold line is green, your latency is below the thresholds. If it's yellow, you've exceeded the warning threshold. And if it's orange, you've exceeded the critical threshold. We can see that your virtual machine indeed was experiencing latency above the critical threshold, during this time frame.
We can also do a similar analysis for latency of the disk extent connected to this data store. You can see that, in this case, there's latency of the disk extent which exceeds your thresholds. Based on this analysis, the store's troubleshooting feature has determined that the slow performance is due to either the SAN storage or the network, meaning it is not due to inadequate resources allocated within the ESX host.
You can then click the Analyze SAN Storage button for a deeper analysis. This view displays latency measurements for the LUN attached to this virtual machine. If the storage array is reporting no excess of latency at the LUN level, you know the problem resides within your network. However, if the storage array is reporting that the LUN is experiencing high latency, it indicates that the problem resides within the array.
We see here that the LUN is reporting latency that exceeds your thresholds. We can also see that, the pool for this virtual machine's LUN is experiencing higher than normal IOPs. This can mean that other LUNs within the pool are consuming excessive IOPs, which is resulting in high latency for your virtual machine's LUN. To investigate deeper, you can click either the Perform Pool Change Analysis or Perform Pool Load Analysis buttons.
In summary, the storage troubleshooting feature is an easy and powerful tool for confirming whether slow virtual machine performance is originating in your physical storage hardware. In addition to topology mapping and performance troubleshooting, Foglight for Storage Management provides a single pane of glass for monitoring the amount of available and use capacity across your entire heterogeneous storage environment. In this example, we can see the amount of usable and remaining available storage capacity that is allocated to each of the aggregates on this particular NetApp array.
For thinly provisioned storage, we can even report how much you're over-committed. Using this data, you can determine whether you're in danger of running out of available storage on over-committed storage pools and aggregates. And if you're interested in reviewing storage capacity across your entire storage environment, you can run an instant query from our Frequently Asked Questions section. In this example, we've asked for the list of a arrays or filers that have the least free unallocated disk space.
This concludes my overview of Foglight for Storage Management. To learn more about what else you can do with this product or to obtain a free trial download, please visit the Foglight for Storage Management page on our website.