IBM磁带机，在备份的时候出现的问题

xiaogui1

使用的是SCOUNIXWARE7.1.1
IBM磁带40G，IBM磁带机，DDS/4
都换成新的设备了

在备份数据库的时候，UNIX系统提示

WARNING: Tape Driver: HA 2 TC 6 LU 0 - CHECK CONDITION:
A "MEDIUM ERROR" condition has been detected.
Additional data = "WRITE APPEND POSITION ERROR".

另外数据库备份日志提示错误：
使用的是SYBASE数据库
Backup Server: 4.141.2.37: [2] The 'write' call failed for device '/dev/rmt/ntape1' with error number 5 (I/O error). Refer to your operating system documentation for further details.

bird_man

MEDIUM ERROR