VMware Cloud Community
kaychan
Contributor
Contributor

Schedule for DRS?

Hi

For a cluster where DRS is enabled, does VMware DRS checks at some regular intervals on a cluster to see if the workloads under different ESX hosts needs to be re-distributed?? Or would the auto-mirgation takes place as soon as DRS thinks that the workload is not evenly distributed among the ESX hosts under the same cluster?

Thanks.

0 Kudos
4 Replies
MR-T
Immortal
Immortal

I understood this was every 5 minutes.

Can someone confirm this for me please.

0 Kudos
frankdenneman
Expert
Expert

Stuart is correct,

It scans the cluster every 5 minutes.

See Resource Management with VMware DRS

http://www.vmware.com/pdf/vmware_drs_wp.pdf

Also take a look at the presentation of Nitin Suri at vmworld 2006 (tac 9413)

The best thing since sliced bread: effective DRS and HA in production http://download3.vmware.com/vmworld/2006/tac9413.pdf

Blogging: frankdenneman.nl Twitter: @frankdenneman Co-author: vSphere 4.1 HA and DRS technical Deepdive, vSphere 5x Clustering Deepdive series
MR-T
Immortal
Immortal

The other thing to note is it will always balance load using CPU utilisation before RAM.

kaychan
Contributor
Contributor

Thanks guys for all the good information.

0 Kudos