Hi all,my TSM server is 5.2.6.4 , some days before one of the storage agents
had terminated the dsmsta process and yesterday I manual actived this
process,but today I get the follow error messages:

06/07/06 15:53:01     ANR0408I Session 16165 started for server nodea

                       (AIX-RS/6000) (Tcp/Ip) for library sharing.
(SESSION:

                       16165)


06/07/06 15:53:01     ANR0408I (Session: 16156, Origin: nodea)  Session

                       31 started for server TSM (AIX-RS/6000) (Tcp/Ip) for


                       library sharing.  (SESSION: 16156)


06/07/06 15:53:01     ANR0409I (Session: 16156, Origin:nodea)  Session

                       31 ended for server TSM (AIX-RS/6000). (SESSION:
16156)

06/07/06 15:53:01     ANR0409I Session 16165 ended for server nodea

                       (AIX-RS/6000). (SESSION: 16165)


06/07/06 15:54:10     ANR8213W Session open with xxx.xxx.xxx.xxx timed out.


06/07/06 15:54:10     ANR0454E Session rejected by server nodea, reason:

                       Communication Failure.


06/07/06 15:54:10     ANR8779E Unable to open drive /dev/rmt4, error
number=16.

06/07/06 15:56:11     ANR8213W Session open with xxx.xxx.xxx.xxx timed out.


06/07/06 15:56:11     ANR0454E Session rejected by server nodea, reason:

                       Communication Failure.


06/07/06 15:56:11     ANR8779E Unable to open drive /dev/rmt4, error
number=16.

06/07/06 15:58:01     ANR0408I Session 16166 started for server nodea

                       (AIX-RS/6000) (Tcp/Ip) for library sharing.
(SESSION:

                       16166)

And with q mo,I can see this drive status from dismounting and RETRY
DISMOUNT FAILURE .  So I kill this process manual and everything became
normal.But next time I active this process and do a backup test,the same
error  come again.

What's wrong? Thanks!