[ADSM-L] ANR8485E: No drives available, can't find root cause

Hi Everyone,

I seem to be getting an ANR8485E message sporadically while doing NAS NDMP 
backups for 1 particular datamover.  It has 3 drives attached to it which are 
also shared with another datamover.  All 3 drives in question are online and 
the paths are online as well.  No checkin or label jobs were being done at this 
point in time either.

Any other suggestions?  I would've thought that if 2 datamovers request a tape 
mount and the drive is not yet available that it will wait until a drive 
becomes available.

If anyone has any suggestions just let me know.  Thanks!!!!

Date/Time             Message
--------------------  ----------------------------------------------------------
06/29/10 19:00:34     ANR0984I Process 4009 for BACKUP NAS (DIFFERENTIAL)
                       started in the BACKGROUND at 19:00:34. (SESSION: 41559,
                       PROCESS: 4009)
06/29/10 19:00:34     ANR1064I Differential backup of NAS node NAS_SERVER_33,
                       file system /root_vdm_7/HMCH1023_H_bkup, started as
                       process 4009 by administrator LIDZR8V. (SESSION: 41559,
                       PROCESS: 4009)
06/29/10 19:00:34     ANR2017I Administrator LIDZR8V issued command: BACKUP NODE
                       nas_server_33 /root_vdm_7/HMCH1023_I_bkup mode=different-
                       ial toc=preferred  (SESSION: 41559, PROCESS: 4009)
06/29/10 19:10:17     ANR8485E No drives are available to be mounted in R/W mode
                       with format 00000000 in library NASLIB. (SESSION: 41559,
                       PROCESS: 4009)
06/29/10 19:10:17     ANR1401W Mount request denied for volume N06829 - mount
                       failed. (SESSION: 41559, PROCESS: 4009)
06/29/10 19:10:18     ANR8485E No drives are available to be mounted in R/W mode
                       with format 00000000 in library NASLIB. (SESSION: 41559,
                       PROCESS: 4009)
06/29/10 19:10:18     ANR1401W Mount request denied for volume N00009 - mount
                       failed. (SESSION: 41559, PROCESS: 4009)
06/29/10 19:10:18     ANR8485E No drives are available to be mounted in R/W mode
                       with format 00000000 in library NASLIB. (SESSION: 41559,
                       PROCESS: 4009)
06/29/10 19:10:18     ANR1401W Mount request denied for volume N06829 - mount
                       failed. (SESSION: 41559, PROCESS: 4009)
06/29/10 19:10:18     ANR1096E NAS Backup process 4009 terminated - storage
                       media inaccessible. (SESSION: 41559, PROCESS: 4009)
06/29/10 19:10:18     ANR0985I Process 4009 for BACKUP NAS (DIFFERENTIAL)
                       running in the BACKGROUND completed with completion state
                       FAILURE at 19:10:18. (SESSION: 41559, PROCESS: 4009)


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