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PROSERVIA : Pôle Conseil Expertise
18 mars 2013

Dynamic Memory Pro Tip – be reasonable with your startup ram

Hyper-V now allows you to configure a startup, minimum and maximum memory limit.  If you are like me – you probably leave the startup ram at the default of 512mb – but you should really consider changing it to better suit your environment.  Here is a quick screenshot from one of my Hyper-V servers:

clip_image002

Two things that I have discovered:

  1. Some of my virtual machines benefit from having a startup and minimum that is below 512mb.  My FTP server, for instance, is a core installation of Windows server which just acts as an FTP server (and nothing else).  It happily boots and runs with a startup and minimum amount of 256mb ram.
  2. Other virtual machines benefit from having higher startup ram amounts.  I have never seen my TMG server under 2GB of ram – and have set the startup ram for this virtual machine to 2GB.

Why would I increase the startup ram for the TMG server?  Well – we do not start adding & removing memory dynamically until fairly late in the boot process for Windows (basically we wait until the system is mostly up and running before we start doing anything fancy with memory).  TMG loads a *lot* of processes before we start reacting with dynamic memory.

--> Please see the rest on the blog : http://blogs.msdn.com/b/virtual_pc_guy/archive/2013/02/26/dynamic-memory-pro-tip-be-reasonable-with-your-startup-ram.aspx 

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