Dennis, Sometimes you don't have the option to decide if you are using a single RAID set or not. At my last job I was told "hey, we have 375GB of space for you -- and it's RAID-5". I was not asked if I wanted it configured that way, I was not listened to when I protested. So the alternatives I faced were a) run my database on RAID-5 and do the best I can or b) quit because I refused to run a database on RAID-5
Option b seemed a little extreme. You really can't make pronouncements like "you shouldn't run a production database on a single RAID set" because sometimes you have to. Oh yeah -- the database ran fine, we had no performance problems and we DID have good backups. Rachel --- DENNIS WILLIAMS <[EMAIL PROTECTED]> wrote: > Dwayne > So you have a single RAID set, or 5 separate devices? You might > have a > test database on a single RAID set, but you shouldn't do that in > production. > First, multiple control files on separate devices. Redo should write > to a > non-RAID device since it continuously writes. Past that it depends on > how > much performance this system requires. > Gaja and Kirti explain this nicely in Oracle Performance Tuning > 101. > > Dennis Williams > DBA, 40%OCP, 100% DBA > Lifetouch, Inc. > [EMAIL PROTECTED] > > -----Original Message----- > Sent: Thursday, March 27, 2003 6:59 AM > To: Multiple recipients of list ORACLE-L > > > Hi all, > > I am configuring a system for use with Oracle and am confused on the > concepts > of RAID and OFA, specifically how they work together. > > I inherited a system that is a RAID 5 utilizing 5 disks. Oracle8i > (8.1.7) > is > currently running on it. The database is setup on one disk (data > files, > control files, redo logs, etc.). > > I understand that striping spreads the info out across all the disks. > That > being true, is it necessary to put the redo logs, rollback segments, > etc on > sepaparte disks ala OFA? > > Since the database is not in production yet, I have time to make > these > changes > (not to mention we are planning to redo the setup with Red Hat > Advanced > Server and upgrade to Oracle9i). > > Thanks in advance for your help. Feel free to point me to additional > reading > materials that will clarify this for me. > > Dwayne > > -- > Dwayne Cox > Corporate Database Administrator > Info Tech, Inc. > 5700 SW 34th Street, Suite 1235 > Gainesville, FL 32608 > > email: [EMAIL PROTECTED] > phone: 352.381.4521 fax: 352.381.4444 > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Dwayne Cox > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: DENNIS WILLIAMS > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Rachel Carmichael INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
