Re: Write caching controllers
As long, as battery backup on the controller is working, you should be fine. On the other hand, all those controllers should have an option to turn of write-caching, if you wish. Igor Neyman, OCP DBA [EMAIL PROTECTED] - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Wednesday, October 09, 2002 9:23 AM Good morning all! I have a question regarding use of write-caching RAID controllers. As an NT systems/network admin of some years, and an Oracle 8i DBA-in-training, I had done some homework and gather that both Oracle and industry best-practices suggest avoiding write-caching controllers if possible (to preclude any chance of data loss). As a result, I had recommended we purchase dual non-caching controllers on the new Compaq ML530s we are about to buy. Compaq has discontinued the model controller we requested, and now all their controllers include write caching (battery-backed, of course). We are running a couple of ~10GB instances, not terabyte OLTP - so should I just go with it and not be so anal about the caching?? Thanks and Regards, Brian NT 4.0 SP6a Oracle 8.1.7.4 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Richards, Brian 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.com -- Author: Igor Neyman 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).
RE: Write caching controllers
Brian, I would not worry about it. To preclude any chance of data loss requires not having any data to loose in the first place. I lost files using EMC Symmetrix, yet I have bought more. inka -Original Message- Sent: Wednesday, October 09, 2002 9:24 AM To: Multiple recipients of list ORACLE-L Good morning all! I have a question regarding use of write-caching RAID controllers. As an NT systems/network admin of some years, and an Oracle 8i DBA-in-training, I had done some homework and gather that both Oracle and industry best-practices suggest avoiding write-caching controllers if possible (to preclude any chance of data loss). As a result, I had recommended we purchase dual non-caching controllers on the new Compaq ML530s we are about to buy. Compaq has discontinued the model controller we requested, and now all their controllers include write caching (battery-backed, of course). We are running a couple of ~10GB instances, not terabyte OLTP - so should I just go with it and not be so anal about the caching?? Thanks and Regards, Brian NT 4.0 SP6a Oracle 8.1.7.4 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Richards, Brian 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.com -- Author: Inka Bezdziecka 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).
