Alternatively, when performing a Zerto Move or Failover operation, one of the recovery disks for a protected vm fails to mount on the recovered vm on the DR site. The disk comes up in offline mode and has to be manually brought online. This issue occurs with disks using the PVSCSI driver.
The resolution requires setting the diskpart policy to "OnlineAll" using the following steps:
1) Open the command prompt on the relevant vm.
2) Launch "diskpart"
3) Type "san" to confirm the server is set to "Offline Shared"
4) Typed "san policy=OnlineAll"
For more information see the following external KBs: