RE: RAID

From: Satar Naghshineh <Satar.Naghshineh_at_irvine.mellesgriot.com>
Date: Fri, 27 Oct 2000 10:20:05 -0700
Message-Id: <10662.120482@fatcity.com>

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Lee, in that type of environment, you would need a real storage solution like EMC or something similar that can hold that kind of data in a database environment.

Jay, Cache is not always a good thing. The best thing out there is a storage solution that has something called "smart cache" that determines whether to bypass cache and write strictly to disk in a sequential write environment.

Regards,
Satar

> -----Original Message-----
> From: Jay Hostetter [SMTP:jhostetter_at_decommunications.com]
> Sent: Friday, October 27, 2000 2:51 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: RAID
>
> Lee,
>
> I think the consensus is to use Raid 0+1. Our sysadmin claims that our
> disk cache is so large, that it doesn't really matter that we are using
> Raid 5 (we are on Tru64 4.0d). I really don't have the hardware expertise
> or the time to prove otherwise. I wouldn't mind hearing some comments on
> that statement from other folks on the list as they reply to your
> question. I am able to flood the cache during sqlloader runs, but other
> that that, he seems to be correct.
>
>
>
>
>
> Jay Hostetter
> Oracle DBA
> D. & E. Communications
> Ephrata, PA USA
>
> >>> lerobe - Lee Robertson <LEROBE_at_acxiom.co.uk> 10/27/00 08:30AM >>>
> All,
>
> I have seen various threads on the subject of Oracle and Raid but don't
> have
> any messages stored on the subject so forgive me for the repetition
> factor.
>
> Can someone provide a list of do's/don'ts, advantages/disadvantages of
> using
> various raid levels with Oracle (in this case 8) on a TRU64 4.0 platform.
> Database will be approx. 4Tb in size/
>
> Regards
>
> Lee
>
>
> Lee Robertson
> Acxiom
> Tel: 0191 525 7344
> Fax: 0191 525 7007
> Email: lerobe_at_acxiom.co.uk
>
>
>
>

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<TITLE>RE: RAID</TITLE>
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Lee, in that type of = environment, you would need a real storage solution like EMC or = something similar that can hold that kind of data in a database = environment.

Jay, Cache is not = always a good thing. The best thing out there is a storage solution = that has something called "smart cache" that determines = whether to bypass cache and write strictly to disk in a sequential = write environment.

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;</FONT></B> <FONT =

SIZE=3D1 FACE=3D"Arial">Jay Hostetter =
[SMTP:jhostetter_at_decommunications.com] Sent:   Friday, October 27, 2000 2:51 PM To:     Multiple recipients of list ORACLE-L Subject:       = Re: RAID

Lee,

I think the consensus is to use = Raid 0+1.  Our sysadmin claims that our disk cache is so large, = that it doesn't really matter that we are using Raid 5 (we are on Tru64 = 4.0d).  I really don't have the hardware expertise or the time to = prove otherwise.  I wouldn't mind hearing some comments on that = statement from other folks on the list as they reply to your = question.  I am able to flood the cache during sqlloader runs, but = other that that, he seems to be correct.

<BR>
<BR>
<BR>
<BR>

<P><FONT SIZE=3D2 FACE=3D"Arial">Jay Hostetter</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Oracle DBA</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">D. &amp; E. Communications</FONT>

Ephrata, PA  USA

>>> lerobe - Lee Robertson = <LEROBE_at_acxiom.co.uk> 10/27/00 08:30AM >>>

<BR><FONT SIZE=3D2 FACE=3D"Arial">All,</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">I have seen various threads on the =

subject of Oracle and Raid but don't have any messages stored on the subject so = forgive me for the repetition factor.   Can someone provide a list of = do's/don'ts, advantages/disadvantages of using various raid levels with Oracle (in = this case 8) on a TRU64 4.0 platform. Database will be approx. 4Tb in = size/

<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Regards</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Lee</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Lee Robertson </FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Acxiom </FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Tel:&nbsp;&nbsp;&nbsp; 0191 525 7344 =
</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Fax:&nbsp;&nbsp;&nbsp; 0191 525 7007 =

Email: lerobe_at_acxiom.co.uk Received on Fri Oct 27 2000 - 12:20:05 CDT