Re: Oracle on EMC Question

Sean M <smckeownNO_at_BACKSIESearthlink.net> wrote in message news:<3C97596C.C3C5D26B_at_BACKSIESearthlink.net>...
> Andrew Mobbs wrote:
> >
> > I'm not so sure. I keep coming across people with EMC, IBM or Hitachi
> > arrays who want to present the storage as a bunch of RAID-5 stripes and
> > then position the datafiles accordingly to spread I/O load.
>
> That sorta defeats the purpose of SAME though, yes? Anyway, I'm not a
> fan of RAID-5 stripes. We do RAID 0+1 for all our EMC disk, except the
> BCV's. Big pools of heavily striped disk, and little or no attention to
> the datafile layout. Performance screams.
>
> > I have no idea why this setup is so popular. IMO it's got all the
> > difficulties of a carefully hand-crafted disk layout with the performance
> > hit of RAID-5 and none of the ease of SAME.
>
> Exactly. Seems like they're shooting themselves in the foot.
>
> Regards,
> Sean

Hi Sean,
may be you want Steve Adams comments about SAME at

http://www.ixora.com.au/newsletter/2000_10.htm#same
http://www.ixora.com.au/q+a/0104/18192003.htm
http://www.oracle.com/openworld/upload/W12825.doc

Regards,
Slava. Received on Wed Mar 20 2002 - 01:11:06 CST