Walkthrough a live vSAN environment, running active workloads. In this demo vSAN is hosting a combination of Horizon Desktops as well as VMs running HCIBench. Using both vSAN Health and Performance Service and vROps, the live vSAN allows you to see and measure the IOPs and latency in real time.
Before you Begin
In order to complete this demo please make sure you have the following:
- A valid account in the VMware TestDrive environment, sign up here if you do not have one.
Accessing the vSAN Environment
To login to the vSAN environment, perform the following steps.
Enter your TestDrive username and password and select ENTER.
Next, locate the vSAN product under the Modernize Data Centers tab.
Click LAUNCH and LAUNCH VIA WORKSPACE ONE.
A new tab will open with Workspace ONE. Enter your same TestDrive Username and Password and then Sign in.
Next, search for the vSAN desktop. Click to open into the desktop either via HTML access or Horizon Client access.
Now you'll be on the vSAN RDSH desktop. At this point you can begin the walkthrough steps listed below.
vCenter Walkthrough of vSAN
Double click the vSAN vCenter Demo icon.
Log into the vCenter
Navigate to the Hosts and Clusters view within the vCenter and select vSAN-Demos. Select the Configure tab and then select General.
Note the following from above:
- vSAN is enabled on the vSphere cluster.
- Deduplication and Compressions are enabled.
- Unicast networking mode is being used.
- The vSAN cluster has a total of 40 disks, running version disk format 5.0.
From within the Configure page, select Disk Management. Highlight a disk group from one of the ESXi hosts.
By selecting the individual disk group of a host the details of that disk group are then populated in the lower pane. This vSAN cluster has (4) ESXi hosts, each with (2) disk groups. Each disk group has an 800GB SSD cache tier disk and (4) 1.6TB SSD capacity tier disks.
Under the Configure page, navigate to Health and Performance. The Performance Service is on.
Select Fault Domains and Stretched Cluster. Stretched Cluster is Disabled.
Select the Monitor tab, then click on vSAN.
Select and expand Cluster. Notice all of the checks that vSAN performs for each aspect of the cluster. Since this is a live environment, you can run this again. The vSAN Health Service is a very helpful for both net-new vSAN installations but also ongoing vSAN production environments.
In the same window select Capacity. Note the space savings using Deduplication and Compression. The breakdown of the vSAN listed as well.
With the vSAN cluster still selected, click on Monitor, then Performance, and then vSAN Backend. The VMs on the vSAN cluster are generating IO, the actual IOPs might change from the image below. Within this page the IOPs, Throughput, Latency, Congestion, and Outstanding IO can all be observed.
Within any of the windows where the Time Range is, please feel free to change it.
Now let's select a VM generating IO. Select the VM, then click on the Monitor tab, then Performance, the vSAN - Virtual Machine Consumption. The VM in the image below is generating over 2000 Read IOPs and over 1000 Write IOPs. Hover the mouse to the Latency graphs and see what it reports.
Using the same VM in the same window, select vSAN - Virtual Disk. Make sure you select a disk generating IO. This is great way to determine how a particular VMDK is performing.
vROps vSAN Dashboards
Within the web browser open another tab and go to https://vsandemosj-vrops.vmwdemo.int
Select Local Users.
Select Dashboards, then select vSAN Capacity Overview. vROps helps admins quickly identify issues within their virtualized environments. The overview dashboard tells us exactly what we need to know; capacity and utilization of the vSAN cluster.
Navigating to the left pane, select the Troubleshoot vSAN dashboard. Most of the information that we had to navigate through multiple tabs and pages within vCenter are centrally located on this Dashboard. This is a default Dashboard.
Another great default Dashboard is Heavy Hitter VMs. This dashboard can instantly tell you what VMs are consuming the most resources.
Here is the summary for Highest IOPs of last week.