HP300MX and FileNet

[Ilario]

Hi
I have a random problem on my library
The FileNet application software show this error :
2005/12/23 08:55:00.928 30,0,1 dtp a 1 (1266.1358 0x4f2.54e) ...
ODlib a 1 'drivenotrdy' Surf=3015 Sect=536878592 Blks=0
Cmd=MdSns MoErr=3 Status=Check Unit_atten/Power on or reset
Sense data = 70000600 0000000e 00000000 29000000 00000008 0002

This occurs with different media on both drive of library.
I'm not an expert of FileNet , but in think that sector number 536878592 is too big for any kind of media .
Someone can help me to understand why this occurs ?
Many thanks