To deploy a large OVA file, VMware recommends to first extract the OVA on your system by running the command tar -xvf <file.ova>. Then you can provide the deployment wizard with the OVF and VMDKs as separate files.+
The size of OVF files that a Web browser can upload is also limited. Different Web browsers have different file size limits. Recent versions of Internet Explorer can upload OVF files up to 4 gigabytes in size. Mozilla Firefox also has a 4-gigabyte limit. Google Chrome can handle larger files and there is no documented limit.
WinSCP is what we use to overcome the 4GB browser limit.