Alex Deucher wrote: > On 3/1/07, Joshua D. Drake <jd@xxxxxxxxxxxxxxxxx> wrote: >> \ >> >> Is the SAN being shared between the database servers and other >> >> servers? Maybe >> >> it was just random timing that gave you the poor write performance on >> >> the old >> >> server which might be also yielding occassional poor performance on >> >> the new >> >> one. >> >> >> > >> > The direct attached scsi discs on the old database server we getting >> > 45MBps not the SAN. The SAN got 62/145Mbps, which is not as bad. >> >> How many spindles you got in that SAN? > > 105 IIRC. You have 105 spindles are you are only get 62megs on writes? That seems about half what you should be getting. (at least). Joshua D. Drake > > Alex > -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/