RE: Drive Configuration

From: Kevin Kostyszyn <kevin_at_dulcian.com>
Date: Thu, 25 Jan 2001 10:39:31 -0500
Message-Id: <10752.127494@fatcity.com>

I am curious Dick, why would they pay the price with a RAID 5 config with more than one connection. I am assuming you mean the array configuration? Every Disk having it's own seperate cable? Why is this bad? Because you are not getting maximum efficiency out of the system? Just curious. Kevin

-----Original Message-----

From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of dgoulet_at_vicr.com
Sent: Thursday, January 25, 2001 10:31 AM To: Multiple recipients of list ORACLE-L Subject: Re:Drive Configuration

Woody,

Depends. Are you using a disk array? If so is there more than one path (equate that to interface cables) to the disks. If yes then your right, there
wrong & will pay the price.

If on the other hand there is one and only one path to the drives, it really
doesn't matter. Everything has to go down that path & that is where the bottle
neck will be.

Dick Goulet

____________________Reply Separator____________________
Author: "Woody Mckay" <wmckay_at_hydrogenmedia.com>
Date:       1/25/2001 7:01 AM

I was asked by some hardware people of my suggested drive configuration for a 5 drive configuration.

I recommended the following:

Drive 1 - Oracle database software
Drive 2 - System tablespace, control file_1, online redo log files
Drive 3 - Roll back (RBS) tablespace, Temp tablespace, control file_2
Drive 4 - Data tablespace, control file_3
Drive 5 - Index tablespace, archived log files

I thought this would optimize the performance of small transactions and small queries. I also thought it would optimize I/O performance by distributing the tablespaces. The database is for a Cold Fusion web site where there will be mostly reads but plenty of writes.

They disregarded this configuration and decided to go with a raid-5 with everything on the single raid for recoverability. I caved in and said ok. Were they right?

Sincerely,

Woody

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Author: Woody Mckay
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