Re: Oracle and Raid setup

"Noons" <wizofoz2k_at_yahoo.com.au> wrote in message news:42a82677$0$13560$5a62ac22_at_per-qv1-newsreader-01.iinet.net.au...
> Cris Carampa apparently said,on my timestamp of 9/06/2005 4:41 PM:
>
>>
>> But Raid 1 gives you only fault tolerance, no performance gains because
>> there is no striping. Or am I wrong?
>
> Absolutely right. In fact, it is slower for writes...
>

Not quite right. While a mirrored pair is indeed slower for writes, with properly configured hardware and reasonably intelligent OS, the same pair would perform much better for reads than a single disk might. In fact, performance gain with mirroring was observed as early as in 1985 on VAX/VMS.

VC

> --
> Cheers
> Nuno Souto
> in sunny Sydney, Australia
> wizofoz2k_at_yahoo.com.au.nospam
Received on Sat Jun 11 2005 - 23:22:57 CDT