Flashbackup failing with system call failed 11

Hi,

We are facing issue regarding flashbackup.

Flashbackup has faling with status 11 system call failed.

03/18/2013 06:58:56 - Error bpbrm (pid=59604) from client hbcoldnew2: ERR - FIML_start on <ntfs>\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy429 failed VFM error = 2059
03/18/2013 06:59:04 - Error bpbrm (pid=59604) could not send server status message
03/18/2013 07:03:43 - end writing; write time: 5:27:09
system call failed (11)
 

Master :- Sun OS 10

Client/Media :- Windows 2003/08

NBU :- 6.5.4.

Regards,

Ssagar