Error 2060022: software error Backing up to Disk

 Hello People:

Here my situation, We have a Quantum DXI for OST Backup to Disk. All my clients do the backup over my Master Server to the Quantum DXI. But many of those client have error 84: Here the error on 2 of clients, The error was the same on other clients:

Client 1

2/10/2011 7:36:40 PM - Critical bptm(pid=9304) image write failed: error 2060022: software error     
2/10/2011 7:36:40 PM - Critical bptm(pid=9304) sts_close_handle failed: 2060017 system call failed      
2/10/2011 7:37:31 PM - Error bptm(pid=9304) cannot write image to disk, Invalid argument     
2/10/2011 7:37:41 PM - end writing; write time: 00:39:08
media write error(84)

Client 2
2/10/2011 7:36:24 PM - Critical bptm(pid=8396) image write failed: error 2060022: software error     
2/10/2011 7:36:24 PM - Critical bptm(pid=8396) sts_close_handle failed: 2060017 system call failed      
2/10/2011 7:36:50 PM - Error bptm(pid=8396) cannot write image to disk, Invalid argument     
2/10/2011 7:36:50 PM - Critical bpbrm(pid=5204) from client CLIENTNAME: FTL - tar file write error (5301376)  
2/10/2011 7:36:57 PM - end writing; write time: 01:41:26
media write error(84)

Our Enviroment:

All my servers with Windows 2003 SP2 STD 32Bits

Some of those clients are Virtuals (VMWare).

Master Server HP G5 (Very Good Specs).

Policy don't create any checkpoint on any client.

Policy have available the option for Allow Multiple Data Stream.

Policy are limited to run 2 per policy.

Any HELP or Idea? Thanks