Paul, Thanks so much. I could not have said it any better.
Cheers, Gaja --- Paul Drake <[EMAIL PROTECTED]> wrote: > thin-wide > > RAID 0 volume, 8 drives wide, 8K deep. (2 of these > mirrored uses 16 drives) > Stripe depth = 64K - for a multi_block_read_count = > 8, db_block_size= 8192 - > a FTS will grab 1 block off of each member in the > stripe at a time. > > thick-narrow > > RAID 1 volume, 2 drives, stripe depth 64K, a FTS > will grab 8 blocks off of 1 > drive at a time. > > > The idea is, deeper, wider tends to improve > throughput for fewer jobs. > (SAME) > Thicker, more narrow, tends to allow for more > distinct files on dedicated > volumes (OFA) > > The classic tradeoff of (bulk) throughput vs. > concurrency (few batch jobs > vs. numerous concurrent users). > > > > > ----- Original Message ----- > To: "Multiple recipients of list ORACLE-L" > <[EMAIL PROTECTED]> > Sent: Friday, October 05, 2001 12:55 AM > > > > EXCERPT :- > "A scientific comparison needs to be made to > determine whether it is > better to create fewer volumes with "thin-wide > stripes" or more volumes > with relatively "thicker-narrower" stripes. This is > dependent on issues > such as data/index partitioning, required support > parallelism for core > operations and any service-level agreements on high > or partial > availability. While thin-wide stripes are a very > attractive solution, > the constraining factors of parallelism, > availability and data/index > partitioning, make it not that appealing. My goal > is to meet somewhere > halfway between thin-wide stripes and thick-narrow > stripes ." > > What do you mean by "thin-wide stripes" & > "thicker-narrower" stripes ? > ===== Gaja Krishna Vaidyanatha Director, Storage Management Products, Quest Software, Inc. Co-author - Oracle Performance Tuning 101 http://www.osborne.com/database_erp/0072131454/0072131454.shtml __________________________________________________ Do You Yahoo!? NEW from Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. http://geocities.yahoo.com/ps/info1 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Gaja Krishna Vaidyanatha INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- 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).
