LTO2无法开机

一台Lto2无法开机，报错信息如下
<sun7></>ufsdump 0ufc /dev/rmt/1 /dumpspace/tapebackup/database

  DUMP: Writing 63 Kilobyte records

  DUMP: Date of this level 0 dump: Fri Jul 16 08:42:20 2010

  DUMP: Date of last level 0 dump: the epoch

  DUMP: Dumping /dev/vx/rdsk/sun7dg/tapebackup (sun7:/dumpspace/tapebackup) to /dev/rmt/1.

  DUMP: Mapping (Pass I) [regular files]

  DUMP: Mapping (Pass II) [directories]

  DUMP: Estimated 119391600 blocks (58296.68MB).

  DUMP: NEEDS ATTENTION: Cannot open `sun7:/dev/rmt/1'.  Do you want to retry the open?: ("yes" or "no") yes

  DUMP: NEEDS ATTENTION: Cannot open `sun7:/dev/rmt/1'.  Do you want to retry the open?: ("yes" or "no") no

  DUMP: The ENTIRE dump is aborted.


以前没接触过磁带机，不敢乱动啊，请问各位大概是什么原因，应该怎样解决，先谢谢了

没人知道吗？

你确认LTO2磁带机开机了？　主机能识别到吗？
# iostat -En