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vSPhere ESXi5.0U1 DRS question


We've jsut upgraded to ESXi5.0 U1 and enabled DRS. Now when i get in in the morning i find that the latest/best specced VM is is running most of the big VMs and the mem usage is <90%. The other hosts have mem usage of 20 - 30%. How can we better balance the load over all the hosts.  We'vre running 2 DL380 G5s and 1 DL 380 G7 and will soon be adding a DL380 g8

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In your Datacenter settings under vSphere DRS what is your automation level? I think the default is Fully automated. Additionally you can adjust the migration threshold from conservative to aggressive.

Check out this Yellow Bricks write up on DRS:

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
DRS bases it's average on CPU and Memory, when the VMs are actually using the resources.

So you will find periods, when hosts are "unbalanced". DRS is not a load balancer.
kswan_expertAuthor Commented:
Thanks fo the replies guys. So if i set it to "Aggressive it will beter balance across the hosts?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, it will be better. But check the Virtual Servers you are also using, e.g. Citrix and Terminal Servers do not behave well, if being vMotion around all the time.
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