RE: Question concerning RAID0+1 and redo logs.

From: Satar Naghshineh <Satar.Naghshineh_at_irvine.mellesgriot.com>
Date: Mon, 16 Oct 2000 10:05:42 -0700
Message-Id: <10651.119350@fatcity.com>

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The same difference as RAID 10 ;)

No distinction

Regards,
Satar

> -----Original Message-----
> From: Sent: Monday, October 16, 2000 6:36 PM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: Question concerning RAID0+1 and redo logs.
>
> Okay, I have to ask. What is the distinction between 0+1 and 1+0? To be
> honest, I didn't know there was a difference.
>
> Thanks.
> -km
>
>
> -----Original Message-----
> Sent: Monday, October 16, 2000 12:10 PM
> To: Multiple recipients of list ORACLE-L
>
>
> I'd get 2 mirrored and dedicated disks not on the RAID array, (maybe in
> the
> host cabinet). They don't need to be raw but redo's are the best
> candidates
> for raw if you need the performance boost. Also, as pointed out by Gaja
> Krishna Vaidyanatha at OOW, you want RAID1+0 not RAID0+1.
>
> Steve Orr
>
>
> -----Original Message-----
> (CGI)
> Sent: Friday, October 13, 2000 3:06 PM
> To: Multiple recipients of list ORACLE-L
>
>
> We are in the process of installing new disks and upgrading our software
> and
> I was looking for some opinions and/or facts.
> We are upgrading to AIX 4.3.3 and Oracle 8.1.6 on a basically OLTP system.
> We will also be adding SSA disks with a RAID0+1 configuration.
>
> My questions are :
> In RAID5 it is recomended to put the redo logs on raw devices, now with
> RAID0+1 should I do this?
> Is the performance or RAID0+1 good enough so as not to effect my
> redo logs?
> Are there any other files (ie, : rbs,archive logs,temp, etc) that I
> should consider not putting on RAID0+1 also,
> that is if the concensus is to leave them off?
>
> More questions to come.
>
> Thanks
> Chris Sarka
> Oracle DBA
> CGI pour SLVQ
> * (514)761-3619
> * chris.sarka_at_slvq.com
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Sarka Chris (CGI)
> INET: Chris.Sarka_at_slvq.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
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> also send the HELP command for other information (like subscribing).
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Steve Orr
> INET: sorr_at_arzoo.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
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> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Kevin Martin
> INET: kevin.martin_at_catapultsystems.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
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The same difference = as RAID 10   ;)

No = distinction

Regards, Satar

</P>
<UL>
<P><FONT SIZE=3D1 FACE=3D"Arial">-----Original Message-----</FONT>
<BR><B><FONT SIZE=3D1 FACE=3D"Arial">From:&nbsp;&nbsp; =

Sent:   Monday, = October 16, 2000 6:36 PM
 To:     Multiple recipients of list ORACLE-L Subject:       = RE: Question concerning RAID0+1 and = redo logs.

Okay, I have to ask.  What is the = distinction between 0+1 and 1+0?  To be honest, I didn't know there was a = difference.

<P><FONT SIZE=3D2 FACE=3D"Arial">Thanks.</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">-km</FONT>
</P>
<BR>

-----Original Message----- Sent: Monday, October 16, 2000 12:10 = PM
 To: Multiple recipients of list = ORACLE-L

I'd get 2 mirrored and dedicated disks = not on the RAID array, (maybe in the host cabinet). They don't need to be = raw but redo's are the best candidates for raw if you need the performance = boost. Also, as pointed out by Gaja Krishna Vaidyanatha at OOW, you want = RAID1+0 not RAID0+1.

<P><FONT SIZE=3D2 FACE=3D"Arial">Steve Orr</FONT>
</P>
<BR>

<P><FONT SIZE=3D2 FACE=3D"Arial">-----Original Message-----</FONT>

(CGI) Sent: Friday, October 13, 2000 3:06 = PM
 To: Multiple recipients of list = ORACLE-L

We are in the process of installing = new disks and upgrading our software and I was looking for some opinions = and/or facts.
 We are upgrading to AIX 4.3.3 and = Oracle 8.1.6 on a basically OLTP system. We will also be adding SSA disks with = a RAID0+1 configuration.

My questions are : In RAID5 it is recomended to put the = redo logs on raw devices, now with RAID0+1 should I do this?         Is the performance or RAID0+1 good enough so as not to = effect my
 redo logs?         Are there any other files (ie, : rbs,archive logs,temp, = etc) that I
 should consider not putting on = RAID0+1 also,
         that is if the concensus is to leave them off?

More questions to come.

<P><FONT SIZE=3D2 FACE=3D"Arial">Thanks</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Chris Sarka</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Oracle DBA</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">CGI pour SLVQ</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">* (514)761-3619</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">* chris.sarka_at_slvq.com</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">--</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Please see the official ORACLE-L =

FAQ: <A = HREF=3D"http://www.orafaq.com" =
TARGET=3D"_blank">http://www.orafaq.com</A>

<BR><FONT SIZE=3D2 FACE=3D"Arial">--</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Author: Sarka Chris (CGI)</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp; INET: =

Chris.Sarka_at_slvq.com

Fat City Network = Services    -- (858) 538-5051  FAX: (858) = 538-5051
 San Diego, = California        -- Public Internet = access / Mailing Lists
 <FONT SIZE=3D2 =

FACE=3D"Arial">---------------------------------------------------------=

-----------
 To REMOVE yourself from this mailing = list, send an E-Mail message
 to: ListGuru_at_fatcity.com (note EXACT = spelling of 'ListGuru') and in
 the message BODY, include a line = containing: UNSUB ORACLE-L
 (or the name of mailing list you want = to be removed from).  You may also send the HELP command for other = information (like subscribing).

-- Please see the official ORACLE-L = FAQ: <A = HREF=3D"http://www.orafaq.com" =
TARGET=3D"_blank">http://www.orafaq.com</A>

<BR><FONT SIZE=3D2 FACE=3D"Arial">-- </FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Author: Steve Orr</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp; INET: sorr_at_arzoo.com</FONT>
</P>

FACE=3D"Arial">---------------------------------------------------------=

<BR><FONT SIZE=3D2 FACE=3D"Arial">-- </FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Please see the official ORACLE-L =
FAQ:</FONT><U> <FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial"><A =

HREF=3D"http://www.orafaq.com" =
TARGET=3D"_blank">http://www.orafaq.com</A>

<BR><FONT SIZE=3D2 FACE=3D"Arial">-- </FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Author: Kevin Martin</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp; INET: =

kevin.martin_at_catapultsystems.com

FACE=3D"Arial">---------------------------------------------------------=