Hi, I am going to get a Dell 2950 with PERC6i with 8 * 73 15K SAS drives + 300 GB EMC SATA SAN STORAGE, I seek suggestions from users sharing their experience with similar hardware if any. I have following specific concerns. 1. On list i read that RAID10 function in PERC5 is not really striping but spanning and does not give performance boost is it still true in case of PERC6i ? 2. I am planning for RAID10 array of 8 drives for entrire database ( including pg_xlog) , the controller has a write back cache (256MB) is it a good idea ? or is it better to have 6 drives in HW RAID1 and RAID0 of 3 mirrors in s/w and leave 2 drives (raid1) for OS ? 3. Is there any preferred Stripe Size for RAID0 for postgresql usage ? 4. Although i would benchmark (with bonnie++) how would the EMC SATA SAN storage compare with locally attached SAS storage for the purpose of hosting the data , i am hiring the storage primarily for storing base base backups and log archives for PITR implementation. as retal of separate machine was higher than SATA SAN. Regds mallah. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
