nas备份恢复问题

从头开始

veritas6.0 mp4,master server solaris9。备份到磁带库，hp驱动器。容灾，将数据恢复到另外一台EMC Celerra NAS appliance。备份和恢复根目录下的目录。
备份恢复过一段时间，之前一直都正常，后来开始报错，但并不是所有目录都报错。
备份报错如下：03/15/2007 10:20:28 - mounting 4627L3
03/15/2007 10:20:29 - current media 4627L3 complete, requesting next media Any
03/15/2007 10:20:35 - Error ndmpagent (pid=25037) terminated by parent process
03/15/2007 10:20:35 - end writing
03/15/2007 10:20:46 - Error bptm (pid=25066) error requesting media, TpErrno = Error in SEMAPHORE operation
03/15/2007 10:20:47 - Warning bptm (pid=25066) media id 4627L3 load operation reported an error
error requesting media (tpreq) (9

恢复报错：
03/15/2007 10:34:02 - mounting 4636L3
03/15/2007 10:34:03 - Error bptm (pid=26686) error requesting media, TpErrno = Error in SEMAPHORE operation
03/15/2007 10:34:09 - Error bpbrm (pid=26649) client restore EXIT STATUS 98: error requesting media (tpreq)
03/15/2007 10:34:09 - restored from image nas1_svr4_1173681659; restore time: 0:00:18
03/15/2007 10:34:00 - requesting resource 4636L3
03/15/2007 10:34:01 - granted resource 4636L3
03/15/2007 10:34:01 - granted resource HP.ULTRIUM3-SCSI.005
03/15/2007 10:34:03 - current media 4636L3 complete, requesting next media HP.ULTRIUM3-SCSI.005:NetBackup:4636L3
03/15/2007 10:34:08 - Error nbjm (pid=22234) NBU status: 98, EMM status: The media server reported a system error
03/15/2007 10:34:11 - end Restore; elapsed time 0:00:24
03/15/2007 10:35:58 - Error ndmpagent (pid=26682) write socket err 32 (Broken pipe)
03/15/2007 10:35:59 - Error ndmpagent (pid=26682) NDMP restore failed from path UNKNOWN
the restore failed to recover the requested files (5)

文档写着将数据恢复到EMC Celerra时，不能直接恢复到根目录下，而且错误代码也为5，但之前也一直是恢复到根目录，还成功了大多数，现在不明白原因了，请各位大侠帮忙看看。
谢谢。