Error while saving the snapshot

Hi

Have a VM which is failing with snapshot.

Master Server running on RHEL6 with NBU version 7.6.1.2

Backup Host (Media Server) running on RHEL6 with NBU version  7.6.0.4

Client is a Windows 2012 server

Vsphere is 5.5

Here is a list of things i have tried:

• Backup job itself does multilple attempts, and it does complete the snapshot as seen in Vcenter, but fails to save it.
• Tried a manual snapshot (without virtual machine memory and Quiesce gues file enabled) and it did complete without any problems.
• Logs:
  • Message in Vcenter says as follows:
    An error occured while saving the snapshot: msg.snapshot.error-QUIESCINGERROR.
  • BPFIS was created on the backup hos and attached is the result.
  • Event viewer is showing multiple errors:
    [ warning] [vmvss:vmvss] CVmSnapshotRequestor::CheckWriterStatus():1536: writer SqlServerWriterr in failed state: res = 0x800423f0, err = 0x1, error =
• From the event viewer log above, i have figured that Netbackup is unable to backup independent disk. This VM does have independent disks, but the OS disk is not an independent disk. Anyhow my understanding is that backup should not fail due to independent disk, even though it is unable to back them, it simply just dont show any thing on disks that are independent.