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NNA1
Contributor
Contributor

Migrate VMs at a time

Hi, 

What is the maximun number of VMs we can migrate at a time for one vCenter? Thanks

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markey165
Expert
Expert

@NNA1 

There are multiple factors to consider that affect the number of concurrent vMotions, for example interface speed on hosts, limit on datastores etc.

For 1 Gbps interface, the maximum number of concurrent vMotion operations per host = 4
For 10 Gbps interface, the maximum number of concurrent vMotion operations per host = 8

Datastores = 128 concurrent vMotions
 
If you do actually want to know the answer at the vCenter level itself (ie if you were putting multiple hosts into maintenance mode at the same time across multiple datastores), it looks like the answer is 640 concurrent vMotion operations as of this 2021 Blog Post

HTH 😊
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