Hi, within the performance guide it is recommended to use multiple db volumes (4 - 16) and multiple log volumes. A TSM server database with 195 GB seems to be very large in order to reach high performance rates. Isn't it better to split the TSM server in two servers?
best regards, Kirsten Glöer Forschungszentrum Karlsruhe GmbH Institut für Wissenschaftliches Rechnen (IWR) Hermann-von-Helmholtz-Platz 1 Tel.: +49 (0)7247-82-8616 76344 Eggenstein-Leopoldshafen Fax: +49 (0)7247-82-4972 Deutschland e-mail: [EMAIL PROTECTED] -----Ursprüngliche Nachricht----- Von: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] Im Auftrag von Dirk Kastens Gesendet: Mittwoch, 19. Oktober 2005 13:52 An: [email protected] Betreff: [ADSM-L] disk layout for db and log Hi, we bought a new IBM @server p5 520 for TSM. The server has 8 internal 70 GB harddisks. hdisk0 and hdisk1 contain the mirrorred rootvg with the operating system. So we have six disks left for the TSM db and recovery log. Both shall be mirrored, what makes three disks. What is the best disk layout? Should we create one big db volume on each of the three disks plus one big log volume? Maybe hdisk2: db1 (65 GB) + log1 (4 GB) hdisk3: db2 (65 GB) + log2 (4 GB) hdisk4: db3 (65 GB) + log3 (4 GB) Or should the recovery log be located on a separate disk (what will be a waste of space)? Shall we create on big db volume on every disk or several small volumes? Maybe hdisk2: db1 + db2 + db3 (20 GB) + log1 (10 GB) hdisk3: db4 + db5 + db6 (20 GB) hdisk4: db7 + db8 + db9 (20 GB) Any ideas are welcome. -- Regards, Dirk Kastens Universitaet Osnabrueck, Rechenzentrum (Computer Center) Albrechtstr. 28, 49069 Osnabrueck, Germany Tel.: +49-541-969-2347, FAX: -2470
