Veeam Backup & Replication leverages server virtualization, modern storage and the cloud to provide Availability for the Always-On Enterprise and deliver recovery time and point objectives (RTPO) of <15 minutes for ALL applications. Veeam provides fast, flexible and reliable recovery of virtualized applications and data, unifying backup and replication — all in a single solution for VMware vSphere and Microsoft Hyper-V virtual environments.
Veeam FULLY supports VMware vSphere 6.5, providing you the confidence to upgrade to the latest version of VMware and take full advantage of the most modern technology and functionality with assurance your business will remain Always-On.
There are several good backup solutions that offer protection against ransomware - Unitrends, Mozy, Code42 to name a few. Only Unitrends offers a free plan while others require you to purchase a subscription. You can find out more about these products here Best Backup SoftwareBackup Software