al momento de instalar el agente de DP me deja instalarlo en el servidor al importar el agente en el servidor donde tengo alojado DP importa bien el agente, pero al momento de programar una tarea de backup y ejecutarla me indica que la unidad no es Valida, esto me sucede en los dos dd que tengo en el servidor con SO Windows Server 2008 R2, adjunto el error, si alguien conoce la respuesta a este inconveniente agradecere mucho si me la pueden compartir
[Normal]
From: BSM@xxxxxx"Backup xxxx" Time: 25/03/2014 10:36:00 a.m.
Backup session 2014/03/25-20 started.
[Normal]
From: BSM@xxxxxx"Backup xxxx"HP:Ultrium 5-SCSI_2_dataprotec" Time: 25/03/2014 10:36:05 a.m.
STARTING Media Agent "HP:Ultrium 5-SCSI_2_dataprotec"
[Normal]
From: BMA@dataprotector "HP:Ultrium 5-SCSI_2_dataprotec" Time: 25/03/2014 10:36:10 a.m.
By: UMA@dataprotector@Changer0:0:2:1
Loading medium from slot 8 to device Tape0:0:2:0C
[Normal]
From: VBDA@servidor problema"C:" Time: 25/03/2014 10:37:11 a.m.
STARTING Disk Agent for servidor problema:/C "C:".
[Normal]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:12 a.m.
STARTING Disk Agent for servidor problema:/D "D: [New Volume]".
[Normal]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:12 a.m.
VSS option was specified. Attempting to create snapshot.
[Normal]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:12 a.m.
VSS option was specified. Attempting to create snapshot.
[Normal]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:12 a.m.
Entering snapshot definition phase.
[Normal]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:12 a.m.
Another Data Protector process is in snapshot set definition phase. Waiting to complete.
[Normal]
From: VBDA@servidor problema "D: [New Volume]" Time: 25/03/2014 10:37:12 a.m.
Volume 'D:\' successfully added to snapshot set. The volume is now locked.
[Normal]
From: VBDA@servidor problema "D: [New Volume]" Time: 25/03/2014 10:37:12 a.m.
Exiting snapshot definition phase.
[Major]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:14 a.m.
It was not possible to create volume snapshot for 'D:\'. System error: 'QueryStatus() failed'.
[Critical]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:14 a.m.
Fallback to legacy filesystem backup was not allowed. Aborting the backup.
[Critical]
From: VBDA@servidor problema "D: [New Volume]" Time: 25/03/2014 10:37:14 a.m.
[
81:52] /D
Not a valid mount point => aborting.
[Normal]
From: VBDA@servidor problema"D: [New Volume]" Time: 25/03/2014 10:37:14 a.m.
ABORTED Disk Agent for VBDA@servidor problema:/D "D: [New Volume]".
[Normal]
From: VBDA@servidor problema"C:" Time: 25/03/2014 10:37:14 a.m.
Entering snapshot definition phase.
[Normal]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:14 a.m.
Volume 'C:\' successfully added to snapshot set. The volume is now locked.
[Normal]
From: VBDA@servidor problema"C:" Time: 25/03/2014 10:37:14 a.m.
Exiting snapshot definition phase.
[Major]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:16 a.m.
It was not possible to create volume snapshot for 'C:\'. System error: 'QueryStatus() failed'.
[Critical]
From: VBDA@servidor problema"C:" Time: 25/03/2014 10:37:16 a.m.
Fallback to legacy filesystem backup was not allowed. Aborting the backup.
[Critical]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:16 a.m.
[
81:52] /C
Not a valid mount point => aborting.
[Normal]
From: VBDA@servidor problema "C:" Time: 25/03/2014 10:37:16 a.m.
ABORTED Disk Agent for VBDA@servidor problema:/C "C:".
[Normal]
From: BMA@servidor problema "HP:Ultrium 5-SCSI_2_dataprotec" Time: 25/03/2014 10:40:03 a.m.
Tape0:0:2:0C
Medium header verification completed, 0 errors found.
[Normal]
From: BMA@servidor problema "HP:Ultrium 5-SCSI_2_dataprotec" Time: 25/03/2014 10:40:22 a.m.
By: UMA@dataprotector@Changer0:0:2:1
Unloading medium to slot 8 from device Tape0:0:2:0C
[Normal]
From: BMA@dataprotector "HP:Ultrium 5-SCSI_2_dataprotec" Time: 25/03/2014 10:40:47 a.m.
COMPLETED Media Agent "HP:Ultrium 5-SCSI_2_dataprotec"
[Critical]
From: BSM@dataprotector"Backup Servidor Problema" Time: 25/03/2014 10:40:47 a.m.
None of the Disk Agents completed successfully.
Session has failed.
[Normal]
From: BSM@dataprotector "Backup servidor problema" Time: 25/03/2014 10:40:47 a.m.
Backup Statistics:
Session Queuing Time (hours) 0.00
-------------------------------------------
Completed Disk Agents ........ 0
Failed Disk Agents ........... 2
Aborted Disk Agents .......... 0
-------------------------------------------
Disk Agents Total ........... 2
===========================================
Completed Media Agents ....... 1
Failed Media Agents .......... 0
Aborted Media Agents ......... 0
-------------------------------------------
Media Agents Total .......... 1
===========================================
Overall Deduplication Ratio .. -
===========================================
Mbytes Total ................. 0 MB
Used Media Total ............. 0
Disk Agent Errors Total ...... 6
============================================================================
Session failed!
============================================================================
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, si ayudé a resolver el problema no olvide presionar “Aceptar como solución” 
, así mismo alguien más que tenga la misma consulta le servirá esta solución.
@HPSupportESP
Soporte Técnico HP