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Home -> Community -> Mailing Lists -> Oracle-L -> Re: IO rate for U320 SCSI 15K RPM Hard Drive
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).
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> I agree
-- Best regards, Alex Gorbachev The Pythian Group Sr. Oracle DBA http://www.pythian.com/blogs/author/alex/ http://blog.oracloid.com -- http://www.freelists.org/webpage/oracle-lReceived on Fri Oct 13 2006 - 14:48:49 CDT
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