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VMware 5.5 HA & DRS configuration

Posted on 2015-01-14
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I've been studying the usage HA & DRS and would like to try to take advantage of the services. I'm just not sure of best practices /analysis of existing resources for best configuration. From what I see you can tweak options to take great advantage or you can literally screw up.

I see where HA takes presidency over your previous start priority of the Host, but also if your taking advantage of DRS a lot has to be thought through for a proper config. Just a lot to take in for first time config.

Can anyone assist a novice/intermediate VMware engineer with first venture into the territory? Even if understandable links are available, I'm cool, just need some constructive direction and been there done knowledge, would be great too!

We have 2 Dell R620 2 Core 128GB RAM. Host 1 has 16 VMs live and Host 2, 6 VMs live. Average VM config is 6GB RAM. Drive space varies but we're using Essentials Plus, so we can't move storage anyway on live VMs. There is one SAN storage for live data and a second NAS for a backup repository.  If more config. info is needed let me know. So Host 2 has less resource usage. We're using Veeam and had also planned to setup VM replication too, depending on what I see better for our DR and infrastructure.

Regards
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Question by:Harold
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Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
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Basically, you enable them, and leave them alone, and they work the best without fiddling with the configuration, unless you need something taylored to your organisation.

DRS - Manual, Partial and Fully Automatic.

Usually, most set to manual until they are happy with the feature and technology, and then switch to Fully Automatic.

What is very important with VMware HA and DRS, is you get your networking in order, e.g. DNS fully working, to resolve, and reverse DNS for vCenter Server and all your hosts.
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by:Harold
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Andrew: "unless you need something taylored to your organisation" this is the part that I don't know and how would I know? How does one determine?

Thanks
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by:Andrew Hancock (VMware vExpert / EE MVE)
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
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Reading the documentation, understanding the specifics of HA, and DRS, and then applying those changes to match your requriements, HA and DRS have many features, that can make it more flexible for you, and obvious and sometimes common sense!

The Problem and Question for you ?

You have two domain controllers in your organisation.

Does it make sense to have both those domain controller located on a single HOST ?



VMware vSphere Availability Features

VMware vMotion - Migrate Virtual Machines with Zero Downtime

http://www.vmware.com/products/vmotion/overview.html

VMware vMotion Product Brief

http://www.vmware.com/files/pdf/VMware-VMotion-DS-EN.pdf

VMware High Availability - Decrease Downtime and Reduce Risk

http://www.vmware.com/products/high-availability/overview.html

VMware High Availability (HA) Product Briefs

http://www.vmware.com/pdf/ha_datasheet.pdf
http://www.vmware.com/files/pdf/VMware-High-Availability-DS-EN.pdf

VMware Distributed Resource Scheduler (DRS) - Dynamic Resource Balancing

http://www.vmware.com/products/drs/overview.html

VMware Distributed Resource Scheduler (DRS) Product Briefs

http://www.vmware.com/files/pdf/VMware-Distributed-Resource-Scheduler-DRS-DS-EN.pdf
http://www.vmware.com/pdf/vmware_drs_wp.pdf
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thanks
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