Re: IO rate for U320 SCSI 15K RPM Hard Drive
- From: "Alex Gorbachev" <gorbyx@xxxxxxxxx>
- To: goran00@xxxxxxxxx
- Date: Fri, 13 Oct 2006 15:48:49 -0400
At one company I worked for we divided the disk into 4 quarters and
used only outside two or one for most demanding databases. In extream
cases we could go as low as 12 or less percent of disk surface.
> The 75% full thing is discussed by James Morle the last database forum. The
75% figure and potential performance drops have to do with read speed which is
higher on the outer edge of a disk because of higher sector density (and lower
seek time of the read/write head because movement is reduced).
I agree
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Best regards,
Alex Gorbachev
The Pythian Group
Sr. Oracle DBA
http://www.pythian.com/blogs/author/alex/
http://blog.oracloid.com
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