Differences Between Legacy FT and vSphere FT in vSphere 6.5

Uno schema 'rubato' a VMware per sintetizzare una delle novità di vSphere 6.5.
In sintesi, vmware consiglia di abbandonare la Legacy FT, che viene mantenuta per retrocompatibilità.

Differences Between Legacy FT and vSphere FT
Legacy FT
vSphere FT
Extended Page Tables/Rapid Virtualization Indexing (EPT/RVI)
Not supported
Required
IPv6
Not supported for legacy FT logging NICs.
Supported for vSphere FT-logging NICs.
DRS
Fully supported for initial placement, load balancing, and maintenance mode support.
Only power on placement of Secondary VM and maintenance mode are supported.
vStorage APIs - Data Protection backups
Not supported
Supported
Eager-zeroed thick .vmdk disk files
Required
Not required because vSphere FT supports all disk file types, including thick and thin
.vmdk redundancy
Only a single copy
Primary VMs and Secondary VMs always maintain independent copies, which can be placed on different datastores to increase redundancy.
NIC bandwidth
Dedicated 1-Gb NIC recommended
Dedicated 10-Gb NIC recommended
CPU and host compatibility
Requires identical CPU model and family and nearly identical versions of vSphere on hosts.
CPUs must be compatible with vSphere vMotion or EVC. Versions of vSphere on hosts must be compatible with vSphere vMotion.
Turn on FT on running VM
Not always supported. You might need to power off VM first.
Supported
Storage vMotion
Supported only on powered-off VMs.
vCenter Server automatically turns off FT before performing a Storage vMotion action and turns on FT again after the Storage vMotion action completes.
Not supported. User must turn off vSphere FT for the VM before performing the Storage vMotion action and turn on vSphere FT again.
vlance networking drivers
Not supported
Supported

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