On Oct 13, 2010, at 8:12 AM, Grigori Solonovitch wrote:

> TSM 5.5.4.1 under AIX 5.3-12-01.
> 
> Could somebody explain me meaning of ERROR_STATE=YES in table VOLUMES?
> What is relationship between ERROR_STATE and read/write errors for volumes?

Grigori -

My understanding is that ERROR_STATE is set Yes when the volume suffers what is 
termed a "permanent I/O error", where retries (as reflected in READ_ERRORS, 
WRITE_ERRORS) cannot get by the problem spot on the tape.  At that point the 
volume is rendered readonly, and the administrator needs to deal with it.  
Sometimes, the problem is just a dirty read/write head on the tape drive.

    Richard Sims