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VM Setting Latency sensitivity

Our environment consist of a vCenter 6 Update 3 server and 110 ESXi 6 Update 2 hosts. There is a setting on VMs for "Latency Sensitivity". If I am understanding thing correctly. When using this setting it take your total CPU and memory assignment and creates reservations of the same value. VMs can be migrated with this setting in place as long as the target host has ample resources. What other value does this latency sensitivity setting provide?
Avatar of Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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It's often used for latency sensitive applications commonly VOIP we've seen it used for, or applications that require access to keyboard and mouse movements.

there is a whitepaper here, relevant to 5.5...

https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/latency-sensitive-perf-vsphere55-white-paper.pdf

It's only when set to HIGH, does it change CPU and Memory reservations.

Also DRS is  latency sensitive aware, and tries to pin VMs on the same host and not move them using a soft-affinity rule, to pin to that host. As a vMotion can cause latency issues
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compdigit44

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We have a VM that is VOIP related and teh vendors is requesting this setting. Just to be clear the VM can or cannot be vmotioned when set to high? What does manually setting the reservation vs using the latency setting by us?
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Avatar of Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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We have DRS set for manual only so at least it can be moved it need be... Thanks again
Okay, well you can check what will be moved before hitting Run!

Don't trust DRS (Automatic yet!)