[ADSM-L] ANS1809W-messages using shared memory communication?

Dear all,

i'm running in a problemw with two TSM servers, i do not understand:

both, TSM client and server are located on the same maschine and usesharedmemory communication.

well, the performance is quite good, but i found several warnings"ANS1809W - A session with the TSM server has been disconnected." in thedsmerror log.

the explanation due to the IBM infocenter directs to network problems,but shared memory does not use a network? or am I wrong?

so, that's why i do not understand what's the real problem.

i see those messages mostly on my windows servers, linux seems to havemuch less of them, but some.first i thought, there's correlation with the number of nodes accessingbut they appear when there're only a few nodes (four or five) and thenumber does not increase if there are more nodes the same time.i doubled the values for COMMTIMEOUT (now 600) and IDLETIMEOUT (60), butit seems to have no effect.

neither "top" / "nmon" nor the windows performance monitor gives me ahint, that the server are at their performance limits.



=> does anyone had the same problem?
=> any guess, what to do?

used systems:

1) Dell R610 (12 Cores, 48 GB RAM) with SLES 11 SP3, TSM 7.1.0 serverand client, backing up a 130 TB HSM filesystem using 28 dedicated nodes2) Dell R620 ( 8 Cores, 48 GB RAM) with Windows 2008R2, TSM 7.1.0server and client, backing up a 90 TB HSM filesystem using 16 dedicatednodes

both servers act as a "gateway node" to the SAN-based HSM filesystem andtherefore have direct and local access to the filesystems to be backuped.



thanks & best regards
Bjørn

--

Bjørn Nachtwey                    <mailto:bjoern.nachtwey AT gwdg DOT de>
Arbeitsgruppe IT-Infrastruktur               Tel. +49 551 201-2181
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