concurrent recoveries

Hi,

From the VMware KB:    Operational Limits for SRM 5.1 and vSphere Replication 5.1 we found that there are some limitation from the SRM

Can anyone tell me, what is the meaning of "Concurrent Recoveries", maksimum 10 .

Is it count by VM (10 concurrent VM) or Recovery Plan (only 10 recovery Plan available)

Thanks