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New VMware Fling: DRS Doctor

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DRS is a very powerful vSphere feature that has been around for years. It’s constantly monitoring host performance to ensure that VM demand is satisfied. When DRS determines that another host in a cluster could better suit a VM, a migration recommendation is generated, and the VM will vMotion to another host. DRS looks at several aspects to VM performance like CPU ready time, CPU utilization, memory active and memory swapped to make intelligent placement decisions.

DRS has historically been a black box though. This decision information can be ascertained by analyzing DrmDump files, but requires engineering support to decode and interpret them…until now.

DRS Doctor is a new fling that is aims to fix this, and allows the vSphere Administrator to diagnose DRS behavior without engineering support. This is great when you just want to dig in a little deeper and understand why DRS made a decision to move a virtual machine.

DRS Doctor records information about the state of the cluster, the advanced settings applied, the workload distribution, the virtual machine entitlements, performance demand, the recommended DRS moves, and more. Even better, DRS Doctor writes all this data into a log file that requires no special tools to read.

Read the entire article here, New Fling: DRS Doctor
via the fine folks at VMware!

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VMware VMware is the leader in virtualization and cloud infrastructure solutions that enable businesses to thrive in the Cloud Era. Customers rely on VMware to help them transform the way they build, deliver and consume Information Technology resources in a manner that is evolutionary and based on their specific needs. With 2013 revenues of $5.21 billion, VMware has more than 500,000 customers and 75,000 partners. The company is headquartered in Silicon Valley with offices throughout the world and can be found online at www.vmware.com.

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