Hi all,
        I have used TSM Server 5.1.1 and Storage Agent 5.1.1 too. Please brief 
the cause that  may be make a storage agent down. I found this problem many 
time.  Sometime there is not the error log and session has been terminated. The 
following message that I have got from dsmtsa log file.

>               =========
>               ANR8213E Session 10 aborted due to send error; error 32.
>               ANR8213E Session 10 aborted due to send error; error 32.
>               ANR8213E Session 9 aborted due to send error; error 32.
>               ANR8213E Session 8 aborted due to send error; error 32.
>               ANR8213E Session 9 aborted due to send error; error 32.
>               ANR8213E Session 8 aborted due to send error; error 32.
>               ANR0406I Session 9 started for node BILPTTASB1_DF (SUN SOLARIS) 
> (Tcp/Ip
>               127.0.0.1(50349)).
>               ANR8337I 3590 volume 700116 mounted in drive TD.3494_FD2 
> (/dev/rmt/0st).
>               ANR9999D smnode.c(6655): ThreadId<15> Error receiving EventLog 
> Verb -  invalid
>               data type, 21300, received for event number 4005 from node (SUN 
> SOLARIS)BILPTT-
>               ASB1_DF.
>               ANR7821S Thread 15 (tid 22) terminating on signal 11 
> (Segmentation violation).
>               ANR9999D Additional signal information:
>               ANR9999D Address 0x23820C6C is not mapped into the server�s 
> address space
>               ANR9999D 
>               ANR9999D =========================================
>               ANR9999D REGISTERS Information
>               ANR9999D =========================================
>               ANR9999D PC:0x0082BDE4 nPC:0x0082BDE8 PSR:0xFE001002 
> Y:0x00000025
>               ANR9999D SP:0xF6C0D988 FP:0xF6C0D9F8
>               ANR9999D 
>               ANR9999D G0:0x00000000 G1:0x23820C8D G2:0x0000B2BD G3:0x00000000
>               ANR9999D G4:0x00000000 G5:0x00000000 G6:0x00000000 G7:0xF6C0FD70
>               ANR9999D 
>               ANR9999D O0:0x00000000 O1:0x00000000 O2:0x00000000 03:0x0082C374
>               ANR9999D O4:0x00000000 O5:0x00000000 O6:0xF6C0D988 07:0x0082C374
>               ANR9999D 
>               ANR9999D L0:0x0214D054 L1:0x0214D054 L2:0x00000001 L3:0x23820C6C
>               ANR9999D L4:0x23820C70 L5:0x23820C6D L6:0x00000000 L7:0x00000000
>               ANR9999D 
>               ANR9999D I0:0x00BBC0FC I1:0x00001A07 I2:0x23820C8D 
> I3:0x00000000> 
>               ANR9999D I4:0x01E12FAF I5:0x01E12FAC I6:0xF6C0D9F8 I7:0x005A6738
>               ANR9999D 
>               ANR9999D Trace-back of called functions:
>               ANR9999D   0x0082C374  pkFreeTracked
>               ANR9999D   0x005A6738  SmDoEventLog
>               ANR9999D   0x005A2ED4  SmNodeSession
>               ANR9999D   0x00583B34  HandleNodeSession
>               ANR9999D   0x00583E9C  DoNodeGeneral
>               ANR9999D   0x005813F0  smExecuteSession
>               ANR9999D   0x00076A1C  SessionThread
>               ANR9999D   0x000688EC  StartThread
>               ANR9999D   0xFF25B728  *UNKNOWN*
>               ANR9999D   0x000687FC  StartThread
>               ANR7820S Server thread 1 terminated in response to program 
> abort.
>               ANR7820S Server thread 2 terminated in response to program 
> abort.
>               ANR7820S Server thread 3 terminated in response to program 
> abort.
>               ANR7820S Server thread 4 terminated in response to program 
> abort.
>               ANR7820S Server thread 5 terminated in response to program 
> abort.
>               ANR7820S Server thread 6 terminated in response to program 
> abort.
>               ANR7820S Server thread 7 terminated in response to program 
> abort.
>               ANR7820S Server thread 8 terminated in response to program 
> abort.
>               ANR7820S Server thread 9 terminated in response to program 
> abort.
>               ANR7820S Server thread 10 terminated in response to program 
> abort.
>               ANR7820S Server thread 11 terminated in response to program 
> abort.
>               ANR7820S Server thread 12 terminated in response to program 
> abort.
>               ANR7820S Server thread 13 terminated in response to program 
> abort.
>               ANR7820S Server thread 14 terminated in response to program 
> abort.
>               ANR7820S Server thread 15 terminated in response to program 
> abort.
>               ANR7820S Server thread 16 terminated in response to program 
> abort.
>               ANR7820S Server thread 17 terminated in response to program 
> abort.
 

I appreciate your help,

Wira Chinwong