IBM Spectrum Protect normally uses a connection over TCPIP to backup its database. In this article i will show you how to change connection to Shared Memory. Changes has to be made in configuration from server instance and a special
This option was introduced in version 7.1 of Tivoli Storage Manager.
The serverinstance is configured by a File in home directory which is called
The following lines must be added:
COMMMethod SHAREdmem SHMPort 1510
The server instance must be restarted for the changes to take effect.
After this you can check with Telnet if the port is opened and reachable.
# telnet localhost 1510 Trying... Connected to localhost. Escape character is '^]'.
At this point only the server side is opened, but database backup uses still TCPIP as commucation method.
Database Backup Client
Database backup uses a special Node called
$$_TSMDBMGR_$$, options are stored in a
dsm.sys file like a normal Backup-Archive Client.
This special file can be found at the following path:
# AIX /opt/tivoli/tsm/server/bin/dbbkapi/dsm.sys
Diese sollte folgenden Inhalt aufweisen: Following lines shoud be in this file:
COMMMethod SHAREdmem SHMPort 1510 NODENAME $$_TSMDBMGR_$$ PASSWORDDIR <HOME of instance user> ERRORLOGNAME <HOME of instance user>/tsmdbmgr.log
I have expirenced a speedup of 2 times faster than using TCPIP. In addition to that i have opserved that throughput is more constant, there a no slow individual database backups.