Comments on: 10 Best Practices and Strategies for Hyper-V Dynamic Memory https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/ Hyper-V guides, how-tos, tips, and expert advice for system admins and IT professionals Wed, 31 Mar 2021 06:26:47 +0000 hourly 1 By: Eric Siron https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-2997 Fri, 31 Aug 2018 13:24:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-2997 In reply to Nayan.

You’ll need to use memory tools to see what the host is doing with its memory. Task Manager should generally suffice. RAMMap is good. If it’s all in Standby then I wouldn’t think it would cause a problem.
High memory utilization does not necessarily translate to poor performance. You’ll need to run performance traces across a greater breadth of KPIs to determine the bottleneck.

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By: Nayan https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-2995 Fri, 31 Aug 2018 11:09:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-2995 In reply to Eric Siron.

Hi Eric,

I have a Hyper-V host with 64GB ram with 2VMs (VM1 with 40GB RAM and VM2 with 16GB RAM), so the Host has 8GB ram to run on. The host and all the VMs are running on Windows Server 2016, but the performance of the host is very poor with memory utilization always over 80%.
Currently their are no services running on any of the VMs as i need to sort the host memory issue before deploying any services.
Could you please advice

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By: Tim https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-799 Sun, 05 Jun 2016 04:10:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-799 In reply to Tim.

Sorry, I see you said a Terabyte IS the default max. Pays to read twice, comment once. 🙂

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By: Tim https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-798 Sun, 05 Jun 2016 04:05:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-798 Like last week, a great subject for “people like me”. I knew I was running dynamic memory, so that’s a tick, but I thought I’d check my settings too. I have a Host with 36GB RAM Installed, (weird because I thought it was two pairs)

Anyhow I have 4GB and 8GB for startup on the two VM’s and minimums of 512MB and maximums of 1TB and 20% buffer.

Are those figures default? I couldn’t imagine setting a maximum way above available physical RAM, but there you go. I guess the system does what you say, it manages it all very well.

Thanks Eric, for another top post.

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By: Eric Siron https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-797 Sat, 04 Jun 2016 17:37:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-797 In reply to Doug Barth.

Can you be more specific in what you’re looking for?

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By: Doug Barth https://www.altaro.com/hyper-v/best-practices-for-hyper-v-dynamic-memory/#comment-796 Sat, 04 Jun 2016 16:32:00 +0000 http://www.altaro.com/hyper-v/?p=8487#comment-796 Does Smart Paging figure into the equation?

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