Lets start by going back to the initial topology overview screen

By Martha Hill,2014-03-26 14:17
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After that, we selected one of the disk subsystems, the EMC Clariion, available to you in the Aperi open source storage Management framework

    Welcome to part II of the Aperi open source Storage Management demonstration. In part 1, we became familiar with the Aperi’s user interface and some of the main functions of the topology viewer. We learned how an administrator can use the topology viewer to explore the storage environment to monitor the health status of the various elements in it. To demonstrate this we used the topology viewer to zoom into and out of one of the storage fabrics to view the status of it switches and ports, as well as the elements that were attached to them. In the second part of the demonstration, we will use the same method to explore the details in the disc arrays in our demo storage environment.

    Let's start by going back to the initial topology overview screen. To examine the storage arrays in our demo environment, we simply click the Storage link in the Navigation tree or the Storage group in the main Viewer pane.

    Before we do this, it's worthwhile to point out how the table below contains information that corresponds to the topology represented in the main viewer pane. Recall from Part 1 that each topology view, except the initial Topology Overview, includes this tabular view. The tabular view presents the administrator with more detail than what can be shown in the viewer pane. Remember that changes to either view are automatically applied to the other, keeping both views synchronized as the administrator navigates around the environment.

    Let's double click on the Storage group to get more details on the disk arrays and tape libraries in our demo environment.

    Here we are presented with another view of the subsystems within our environment.

    The minimap, or panner, is a small window that is initially located in the upper right corner of any topology view. It provides a miniature representation of the current topology, and uses color to denote groupings of topology elements. Because topologies can become very large and complex, with many elements and their relationships, the panner shows a small, high-level view of the environment. We can use the panner to move the focus of the current topology view in any direction, which makes navigating around complex topologies much easier.

    Again, the table below also groups the elements into disk arrays and tape libraries. By selecting either tab, the user can quickly check the health status of the various elements in the environment.

    In the subsystems view, Aperi groups the elements according to their health status. Colors and icons are used to indicate the health, performance and policy compliance status of the elements in a particular group. The group to the far left contains those elements that were missing from the most recent discovery job. Next to this, is a group of elements in the storage topology that were not operating normally and to the right of this is a group of elements that are operating normally.

    By looking at the Panner window, we can see there are more elements beyond our current view, so let's pull the view to the right and see what this is.

    In addition to the disk arrays, we see that there is one tape library. Now, let's pull the view back so we can see the different subsystems groups and drill deeper into one them.

    Now that we've got a good understanding of the disk array and tape topology at a high level, let's explore some of the details of some of these disk systems.

    By selecting the subsystems group classified as Normal, we can view details on all the elements in the group.

    Clicking on the Normal group, as we did, presents us with a summary of these 3 disk arrays and the fabric elements to which they are attached. We can click on the Subsystems group in the main Viewer pane, or we can click on the Subsystem tab in the table below to view another level of detail. Changes to either view are automatically applied to both views, keeping them


    Once we've highlighted the Subsystems group in the Viewer pane, we can view the details by clicking on the "plus" sign in the upper right corner of the group box or in the table below. Unless it is expanded manually, the table default is to show the collapsed view.

    Now let's expand this group of disk arrays to what information we have on them.

    With this expanded view we can see a little more information about the three healthy arrays in our environment, but there is some information at the bottom of the screen that is hidden from our view. So let's use the panner to pull this into the Viewer pane

    Of the three subsystems in the Normal group, let's double click on the EMC Clariion icon to view some details about this particular array.

    In this expanded view, we can see the number of disk, storage pools, volumes, LUNs and fabrics associated with this Clariion box. Let's expand this Device group further to view additional details.

    You can see how easy it is to zoom into the topology to any level we desire. Let's zoom in further and expand some of these views to see what additional information is available. Remember, we can do this by clicking on the "plus" sign in the group box of the viewer pane or by clicking on the appropriate tab in the table below.

    Notice how the panner window filled up as we expanded more views. Let's use it to quickly navigate around the topology to see what other elements are available in this view.

    After resetting the view with the panner, we can see the expanded topology of the various disks in this array, as well as the various storage pools.

    By clicking on the desired group in the main viewer panel, Aperi automatically shows the details of the selected group in the table below.

    So let's review what we've done so far with this demo. We started by looking at the topology of the entire storage environment, which included a summary of our servers and their file systems, our SAN fabrics, our disk subsystems, and tape libraries. Then we drilled into our subsystems topology and saw the various disk arrays and tape libraries grouped by their current health status. After that, we selected one of the disk subsystems, the EMC Clariion, to look at the status and details of the various disks, storage pools, and volumes.

    With respect to Aperi's navigational tools, in this demonstration we showed how the graphical topology viewer allows us to zoom in and out of our storage environment. We also saw how the tabular view at the bottom of the screen shows the same information as the topology view, but in a table format. The primary benefit of the tabular view is the ability to see greater detail on the various elements in the environment. Remember, changes to either view are automatically applied to the other view, keeping both synchronized.

    In this example, the table shows the details of our EMC Clariion's storage pools. In addition to the health status of each disk in the array, we can examine each disk's total capacity, available capacity, and a variety of other useful information. The slider bars at the bottom and at the right of the table allow us to scroll horizontally or vertically to view more details about the various disks in this subsystem. In this example, all the disks are healthy and show a green icon next to them. However, if one of them showed a yellow warning status or a red critical status, we would see those colors here instead. Another important feature of Aperi is that through the Aperi console we can launch the element manager that came with this subsystem to take advantage of any unique capabilities it provides.

    The slider bars allow us to view all the details related to selected topology.

Now let's take a look at the storage volumes within this disk array.

    Along with the logical groupings of the disks and storage pools in this Clariion subsystem, we can also see the three separate groups of volumes, labeled Concrete Storage, Local Mirror Storage, and Snap Storage. These are Clariion-specific terms that reflect some of the capabilities of this EMC subsystem. Aperi collects and displays this type of vendor-specific information on our single console, so the administrator doesn't have to keep multiple consoles open at the same time to support a heterogeneous environment. Let's expand one of these groups by clicking on the 'plus' sign to see what Aperi shows us.

    By clicking inside the expanded box, Aperi switches the table view from the Pool tab to the Volume tab to present the details of this volume group.

    Again, we can use the slider bars to view the details of the all of the volumes in this disk array.

    In this demonstration we saw how the Aperi topology viewer provides a single console for viewing our storage assets, as well as for monitoring, troubleshooting, and performing storage management tasks. Rather than switching between a variety of separate consoles to monitor the various elements in the storage network, Aperi can provide a holistic view of the entire environment, greatly reducing the burden for administrators who are struggling to support their growing heterogeneous storage environments.

    That completes the second part of our Aperi demonstration. We hope this was useful in helping you get a better understanding of some of the capabilities available to you in the Aperi open source storage Management framework. For more information on the project on how to participate. Please visit the project web site at

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