VADP Recovery using NBD transport mode instead of SAN

We are tryng recover VM and given transport mode as SAN. But it took NBD transport mode automatically and giving below errors

Requesting 1 recover session(s) from server.

07/10/16 08:22:40.000327

Total estimated disk space needed for recover is 2071 GB.

Recover start time: 10/07/2016 08:20:32

07/10/16 08:22:40.000327

openVddkHandle() successful for disk number 1

Using 'nbd' as the transport mode for VirtualDisk_1.

83330:nsrvadp_recover: Error writing data at offset 39483392, size 8192. Error: The following internal error occurred: An error was returned from nsrvddk.exe: Error writing to disk: VDDK Error: NBD_ERR_NETWORK_CONNECT.

97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VM

DK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written instead of 261632 bytes for file : 1:\virtualdisk_1.vmdk.97261:nsrvadp_recover: Error writing to VMDK: 0 bytes written inst

ead

.....................................................................................................................................................Error writing buffer to VMDK.

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

vadp_chunk_write() vmdk write Queue error: Write aborted

Please help me