The following features are deprecated and will be removed in a future version of Red Hat Virtualization:

Version 3 REST API

Use the version 4 REST API.

Export domains

Use a data domain. You can migrate data domains between data centers and import the virtual machines into the new data center.

In Red Hat Virtualization 4.2, some tasks may still require the export domain.

ISO domains

Use a data domain. You can upload images to data domains.

In Red Hat Virtualization 4.2, some tasks may still require the ISO domain.

RHEV-M Shell

Use the Java, Python, or Ruby SDK, or the version 4 REST API.

Iptables

Use the firewalld service.

Conroe, Penryn, Opteron G1, Opteron G2, and Opteron G3 CPU types

Use newer CPU types.

Use newer fixes.

3.6 cluster compatibility version

Use a newer cluster compatibility version. You can upgrade the compatibility version of existing clusters.