This could be true on the request level. But it will not stop it from pipelining other requests on the spindle level, so that when spindle A is done for request 1 it works on request 2. This increases the overall throughput of the system. Then using Async IO should help here.
I'm talking about EMC raid 0+1 hardware striping, if you are talking about RAID-S, this will be a different story because the parity bits needs to be maintained. Regards, Waleed -----Original Message----- Sent: Friday, October 03, 2003 9:50 AM To: Multiple recipients of list ORACLE-L Hi All, Today I saw an archived thread on orafaq about striped volumes in an EMC Symmetrix. Gaja mentioned that writing to a striped volume is performed in a sequential fashion i.e. spindle B will not start writing block 2 before spindle A has completed writing block 1. Is this still true for a Symmetrix with 5568 firmware? Perhaps it's a better idea to let the OS handle the striping? Regards, Hans de Git _________________________________________________________________ Chatten met je online vrienden via MSN Messenger. http://messenger.msn.nl/ -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Hans de Git 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: Khedr, Waleed 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).