VMware SWAP File Best Practice

VMware vm swap file diagram

Answering the question that always seems to get asked, “what is the best practice for the VMware SWAP file?”

I’ve put this method through bench testing and found it to have the best performance, step by step for VMware SWAP file configuration is:

  1. Set up a data store in each ESXi cluster for guest SWAP files, see diagram to the right. (Do not use local ESX disks! This will save more expensive SAN storage but causes latency for DRS and vMotioning of VMs.)
  2. For each ESX host in the cluster, configure the SWAP to point to the SWAP data store.
  3. Go through all the setting on each VM in the cluster and make sure VM SWAP file are controlled by the host, not in VM folder.
  4. Here’s a step that some will disagree on but my testing has found it to produce the best VM performance, log into the Windows VM and set the SWAP file to be maintained by Windows. Some admins like to do 2.5 – 3.5 ratio for the memory but this is not a physical so let Windows adjust the SWAP file size. From what I have found it’s a 1:1 ratio.
  5. Configure 1 – 3 the same for Linux but on 4 just let Let Linux do it’s own thing. Linux uses a SWAP volume which is stored in the VM’s folder.

VMware SWAP File Test Results My test results produced:  Faster VM Booting, Better VM Performace, Faster vMotioning and DRS, Faster VM evacuation when ESXi host is entering maintenance mode. In the end, the goal is to avoid slow VM performance.

Another useful VMinstall post on the SWAP file topic can be found at: ESX Swap File Size Best Practices.

More on VMware VM Swap file can be found in the: VMware Best Practice Guide.

Read more about “Virtualization

Your Turn:

Do you have a VMware SWAP file tip you want to share, please comment!

  • 3
    Shares

Discussion

  1. ChrisAug
  2. Mike
  3. Mike

Leave a Reply

HOT Skills >>Master DevOps Tools
vSphere Data Protection EOA
Finding The Best vSphere Backup Replacement For VDP (3 Alternatives)

Important Notification: vSphere Data Protection (VDP) End of Availability (EOA) That...

vSphere 6
8 Updates That Make vSphere 6 Better – Keith Barker

Editor’s note: Keith Barker has been a CBT Nuggets Trainer since 2012. Some...

VMware Interview Questions
25 VMware Interview Questions And Answers: Tough & Technical (Download PDF)

Free VMware vSphere Interview Guide In this VMinstall Guide, I’ll share...

Project Photon
VMware Project Photon: Technical Review for Linux Admins

My quick and dirty review of Project Photon. I was very happy...

The Best Blockchain Jobs
10 Best Blockchain Jobs Near You (Perfect Match For DevOps Skills)

We’ll cover the best Blockchain jobs in a minute but first, let...

DevOps Plan
Best DevOps Strategy Hack (Winners Start With Why)

As IT Leaders, we’re all looking for innovative ways to improve ourselves,...

DevOps Tools Download
DevOps Toolchain: Download 3 Free Tools Used By Pros (Ansible, Git, Jenkins)

Hack Your Resume with DevOps Skills Lately, I’ve been getting a...

DevOps Guide
The Best Microsoft DevOps Skills: 25+ For Windows SysAdmins

What is Microsoft DevOps? This is an interesting question because first off,...

Danish
Shift to the Cloud – Will It Shift the Jobs by Danish Wadhwa

Editor’s note: Danish Wadhwa is a strategic thinker and an IT Pro....

VULTR Reviews
VULTR Review – Best 2018 VPS Alternatives (25 PROs CONs & FAQs)

Should Your App, Website or Blog be Powered by VULTR VPS?...

Assessing Your Company's Cloud Readiness
13 Cloud Readiness Assessment Tips To Guide Your Migration Success (Updated)

Planning your migration to the cloud? If you’re planning to move...

devops engineer skills
10 Best DevOps Skills: Finding The Elusive DevOps Engineer

What It Takes To Be A DevOps Engineer in 2018 The...

DesTechAZ
What’s So Interesting About Woz U?

On 10/12/2017, I had the privilege of attending the AZ Tech...

tensorflow training
TensorFlow Tools for Beginners (7 Easy Takeaways To Get You Started)

Introduction To Deep Learning As a follow-up to my book review...

job rut
How To Get MOVING When You’re Stuck In A Career Rut (Video)

You worked hard to get your degree and after graduation you...

Storage Engineer Skills
Why Storage Engineer Skills Are HOT! (Can You Say Big Data?)

3 BIG Skills New Storage Engineers Are Missing Out On… Behind...

VULTR Reviews
VULTR Review – Best 2018 VPS Alternatives (25 PROs CONs & FAQs)
Website for Small Business
Best Small Business Website Packages (6 Alternatives That Rank!)
Rise of the Robots
Rise Of The Robots Review (You Won’t Guess What’s Going On!)
Click here to learn how to Optimize WordPress Speed
WordPress Speed Optimization: Learn To Rank Higher In Google