----- "Scott Marlowe" <scott.marlowe@xxxxxxxxx> escreveu: > On Tue, Nov 24, 2009 at 1:37 PM, Ing. Marcos Ortiz Valmaseda > <mlortiz@xxxxxx> wrote: > > Do you expose that performance issued caused by RAID 5? Because this > is one > > of our solutions here on my country to save the data of our > PostgreSQL > > database. Which model do you recommend ? RAID 0,RAID 1, RAID 5 or > RAID 10? > > RAID-1 or RAID-10 are the default, mostly safe choices. > > For disposable dbs, RAID-0 is fine. > > For very large dbs with very little writing and mostly reading and on > a budget, RAID-6 is ok. > > In most instances I never recommend RAID-5 anymore. I would never recommend RAID-5 for database customers (any database system), some of the current ones are using it and the worst nightmares in disk performance are related to RAID-5. As Scott said, RAID-1 is safe, RAID-0 is fast (and accept more request load too), RAID-10 is a great combination of both worlds. Flavio Henrique A. Gurgel Consultor -- 4Linux tel. 55-11-2125.4765 fax. 55-11-2125.4777 www.4linux.com.br -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
