[Normal] From: BSM@cellsrv01.in.com "Backup_Spec_Win1"
 Time: 4/16/2014 12:08:46 PM
 Backup session
2014/04/16-256 started.
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:08:55 PM
 STARTING Media Agent "AUT01_D01"
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:09:01 PM
 By: UMA@winsrv01.in.com@Changer0:7:0:1
 Loading medium from slot 8
to device Tape1:7:0:0C
[Warning] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:09:57 PM
 The device "AUT01_D01"
could not be opened("Device could not be accessed")
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:09:57 PM
 Starting the device path
discovery process.
[Critical] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:10:00 PM
[90:1004]  Device
address not found.
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:10:00 PM
 Device path discovery
process finished.
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:10:00 PM
 By: UMA@winsrv01.in.com@Changer0:7:0:1
 Unloading medium to slot 8
from device Tape1:7:0:0C
[Normal] From: BMA@winsrv01.in.com "AUT01_D01"
 Time: 4/16/2014 12:10:39 PM
 ABORTED Media Agent "AUT01_D01"
[Normal] From: BSM@cellsrv01.in.com "Backup_Spec_Win1"
 Time: 4/16/2014 12:10:39 PM
 Backup Statistics:
  Session Queuing Time
(hours)         0.00      
 
-------------------------------------------    
  Completed Disk Agents
........          0        
  Failed Disk Agents
...........          4        
  Aborted Disk Agents
..........          0        
  -------------------------------------------
   
  Disk Agents Total
 ...........          4      
 
 
===========================================    
  Completed Media Agents
.......          0        
  Failed Media Agents
..........          1        
  Aborted Media Agents
.........          0        
 
-------------------------------------------    
  Media Agents Total
 ..........          1      
 
 
===========================================    
  Mbytes Total
.................       0 MB      
  Used Media Total
.............          0        
  Disk Agent Errors Total
......          0  
Troubleshooting steps as follows:
>>
Logged into the media server and checked for devices claimed in Device Manager.
Found the devices.
>> Ran
devbra -dev to determine the SCSI address.
>> Found
N/A for drive
C:\>devbra
-dev
Exch  
 HP:1x8 G2 AUTOLDR  Path: "Changer0:0:0:1"  SN: "AABBCCDD1E"
   
    Description: CLAIMED:HP StorageWorks 1x8 Cartridge Autoloader
   
    Revision: 4.20  Flags: 0x0016  Slots: 8  Drives: 1
   
    Drive(s) SN:
   
            "ABCDEFGHIJ"
Tape    HP:Ultrium
3-SCSI  Path: "Tape0:0:0:0"  SN: "N/A"
   
    Description: CLAIMED:HP LTO3 Drive
   
    Revision: Q51W  Device type: lto [13]  Flags: 0x0011
>>
Checked if the drive is locked by DP
[root@cellsrv01:/root]
# omnimm
-show_locked_devs | grep AUT01_D01
[root@ cellsrv01:/root]
>>
Stopped DP Inet from Services.msc and Ran LTT.
>> Got
error message that "mma.exe" process is accessing the device. Killed
the mma.exe process from the Task Manager.
>>
rescanned the devices in LTT. Able to detect both autoloader and it's drive
this time.
>> Ran
devbra -dev, which got the SCSI address.
C:\>devbra
-dev
Exch  
 HP:1x8 G2 AUTOLDR  Path: "Changer0:7:0:1"  SN: "AABBCCDD1E
"
   
    Description: CLAIMED:HP StorageWorks 1x8 Cartridge Autoloader
   
    Revision: 4.20  Flags: 0x0016  Slots: 8  Drives: 1
   
    Drive(s) SN:
   
            "ABCDEFGHIJ "
Tape    HP:Ultrium
3-SCSI  Path: "Tape1:7:0:0C"  SN: "ABCDEFGHIJ "
   
    Description: CLAIMED:HP LTO3 Drive
   
    Revision: Q51W  Device type: lto [13]  Flags: 0x0011
>> Ran
the backup successfully.
Cause :
The DP media
agent was accessing the drive and didn't let any other process to send commands.
After the hung process is killed, the drive was accessible for normal
operations.