Recent Posts

DRS Entitlement Viewer

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Ever wondered how DRS distributes resources to VMs? How much resources your VMs are entitled to? How reservations, limits, and shares (RLS) affect your VMs’ resource availability? Our new fling, DRS Entitlement Viewer, is the answer. DRS Entitlement Viewer is installed as a plugin to the vSphere Client. It is currently only supported for the HTML5-based Read more...

What-If? Resource Management with vSphere DRS

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vSphere Distributed Resource Scheduler (DRS) provides a simple and easy way to manage your cluster resources. DRS works well, out of the box for most vSphere installations. For cases where more flexibility is desired in how the cluster is managed, DRS provides many options in the form of cluster rules, settings and advanced options. Often Read more...

Introducing DRS DumpInsight

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In an effort to provide a more insightful user experience and to help understand how vSphere DRS works, we recently released a fling: DRS Dump Insight. DRS Dump Insight is a service portal where users can upload drmdump files and it provides a summary of the DRS run, with a breakup of all the possible moves along Read more...

DRS Lens – A new UI dashboard for DRS

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DRS Lens provides an alternative UI for a DRS enabled cluster. It gives a simple, yet powerful interface to monitor the cluster real time and provide useful analyses to the users. The UI is comprised of different dashboards in the form of tabs for each cluster being monitored. Read more...

DRS Cluster Resource Management with Reservation and Shares

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Resource management in vSphere is very robust and sophisticated. It provides settings like reservation, limits and shares (a.k.a. RLS), which can be applied on virtual machines (VMs) and resource pools. These settings can be used as knobs to isolate resources, prioritize them, or to guarantee availability of resources to VMs in a cluster. Our customers Read more...

vSphere 6.5 DRS Performance – A new white-paper

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VMware recently announced the general availability of vSphere 6.5. Among the many new features in this release are some DRS specific ones like predictive DRS, and network-aware DRS. In vSphere 6.5, DRS also comes with a host of performance improvements like the all-new VM initial placement and the faster and more effective maintenance mode operation. If Read more...

Expandable Reservation for Resource Pools

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One of the questions I was often asked about resource pools (RP) is ‘Expandable reservation’. What is expandable reservation, and why should I care about it? Although it sounds intuitive, it can be easily misunderstood. To put it simply, a resource pool with ‘expandable reservation’ can expand its reservation by asking more resources from its Read more...

Latency Sensitive VMs and vSphere DRS

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Some applications are inherently highly latency sensitive, and cannot afford long vMotion times. VMs running such applications are termed as being ‘Latency Sensitive’. These VMs consume resources very actively, so vMotion of such VMs is often a slow process. Such VMs require special care during cluster load balancing, due to their latency sensitivity. You can tag Read more...

DRS Doctor is here to diagnose your DRS clusters

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Mystery revealed, DRS for VMware vSphere is no more a black box! DRS Doctor will tell you all you need to know about your DRS clusters. Our latest fling, DRS Doctor, will monitor your DRS clusters for virtual machine and host resource usage data, DRS-recommended migrations, and the reason behind each migration. It also monitors Read more...