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Concurrency control at the VDC level means that the platform will apply the properties for concurrency values (including plugin type, device, and backup manager) to an individual VDC.
This means that you must have either a public cloud region with native support for VDCs (e.g. AWS VPC, Azure Virtual Network, vCloud vApp) or a hypervisor with a network device, (e.g. vCenter + NSX device).
If you do not specify these properties, the default values are false, which means that concurrent operations are limited by the type of hypervisor/public cloud provider, device, or backup manager. Or at the platform level.
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To prevent concurrency in the same virtual datacenter, which means all the operations to the same VDC will be executed one after another, set the following propertiesbyvdc property.
For the same PCR endpoint (connection data)example, with the the following properties, it will be possible to execute multiple concurrent operations (for the same PCR endpoint (connection data)) but only if they affect different virtual datacenters.
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abiquo.virtualfactory.openSession.byvdc=true abiquo.virtualfactory.openSession=1 |
Number of sessions
Note that when using ''openSession.byvdc'', the platform does not limit the maximum number of concurrent connections to the same ConnectionData (provider endpoint or hypervisor IP).
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