A large company could have 100s of clusters, it will be quite a nightmarish task to check all these manually. Hopefully you now understand why Limits are not good at all for any reason.Ĭluster HA and DRS in mostly all cases should always be enabled. You won’t get full performance until you remove the limit of the VM in vCenter. Even thou the VM has 24GB of memory configured, it will only be consuming 8GB of it because of the 8GB limit set on the VM. However, the configured memory is set to 24GB. For example, the VM I highlighted below has a memory limit of 8GB. A limit on a VM basically means the VM won’t perform more than what the limit is set to. If you see any type of VM limits this is not a good sign. Note: If this is blank you will need to enable the Guest File Free metric for VMs in all the active policies. For snapshots, most of the time snapshots should not be older than 7 days. The performance of the VM will suffer dramatically until you add more partition space. If I see any VM that has 0 capacity on the C: Drive or the Root Drive. None of the Fortune 500 companies that I know of has a VM that is higher than 10,000 IOPS. Anything over 10,000 IOPS is extremely rare and should be investigated immediately. If any VMs that has high IOPS or high network usage that looks off to you should be investigated. A busy VM such as heavy Database servers, File Servers, Exchange Server, etc will have IOPS in the range of 1000-8000 depending how busy it is. A typical VM usually doesn’t have more than 1000 IOPS. It just means that the VM has lots of disk activity. High Disk IOPs doesn’t mean there is a disk performance issue. If the latency drops down dramatically you will know it was the datastore that caused itįor VM Disk IOPS and Network Usage notice how this widget says awareness only. Another good way to find out if it’s the VM or the datastore that is causing the latency is by doing a storage vMotion to an isolated datastore. If the datastore is overworked, it will cause latency on other VMs that are hosted by it as well. Check to see if the datastore that the VM is on has high latency as well. If the VM Disk latency is high, this means your disk performance is suffering. Check to see if the VM has enough CPU and/or memory resources.Check if the VM is on a resource pool that has resource limits assigned.Check if the VM is on a highly utilized ESXi Host.ESXi Host that are not set to high performance in the power settings usually causes contention Check to see if the VM has an alert that states that the Host Power settings is causing contention.Check to see if there are any memory or cpu limits on the VM. ![]() These are the checks I would perform to troubleshoot the issue. It basically means something is constraining the VM from getting the resources it needs. If any VM has high contention, CPU ready time, CPU Co-stop, or memory ballooning. If the average is high, then the VM pretty much needs more resources immediately. It is important to see the 7-day average as well. When monitoring high CPU and high memory usage. This monitors vCenter for any disk space issues and vCenter alerts. It will also monitor any adapters that are down and any vROPS alerts. ![]() You will need to add more disk to vROPS if this gets high. Make sure the vROPs DB Usage % doesn’t reach over 90%. They are also report ready, meaning you can add any of the filters I’ve created to a custom report. You can also use the search box to search what you are looking forĪny of these widgets can be easily exported to excel. Select any vCenter Servers, Datacenter, Clusters, or entire environment (vSphere World) to do a complete health check on it ![]() Monitor’s capacity issues, configuration issues, and performance bottlenecks (CPU, Memory, Contention, Disk Latency) User Guide This dashboard will help prevent issues before they happen (being proactive) by identifying everything wrong with your environment today so you can fix it before it causes a problem in the future. In this post I also wrote a full guide on how to resolve some of the main issues.ĭoes a full health check of problems found in the environment (VMs, Host, Clusters, Datastores, vCenter). With that being said, what better way to start than to share out my latest 2.0 version of the vSphere Health Check dashboard which has many major enhancements and has a greater amount of details than before. The feedback will drive me to write even more useful content. Also, a big thanks to the Vmware TAM community for all the positive feedback they have been telling me on how my website has helped their customers. First thank you everyone for making this the number 1 most downloaded dashboard on Vmware code.
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