Reading Time: 3 minutes In the last Veeam Community Forums Digest newsletter there is an interesting note about possible performance issues in VMware vSphere backup based on hot-add transport mode. VMware has confirmed that the increased Hot Add times experienced by some Veeam customers who have installed Veeam Backup & Replication Update 3a and the reason is the latest Virtual Disk Development Kit (VDDK) 6.5 version used in U3a to support also vSphere 6.5 Update 2.