Try this link:
https://powerlink.emc.com/MediumFreq/21110_Symmetrix_3930_5930_Installation_
Manual.pdf
starting from page 155
Waleed
Any views or opinions presented in this email are solely those of the
author and do not necessarily represent those of the company
-----Original Message-----
Sent: Wednesday, April 24, 2002 3:55 PM
To: Multiple recipients of list ORACLE-L
Look at the attached email message. There was a thread of discussion about
this a month ago.
Anyway I am going to test it on a small scale in one of my projects.
I was told that 1MB (one track) stripe size is the smallest efficient size
we should have b/c EMC will read 1MB anyway (one track) even if you need
less.
Regards,
Waleed
Any views or opinions presented in this email are solely those of the
author and do not necessarily represent those of the company
-----Original Message-----
Sent: Wednesday, April 24, 2002 3:20 PM
To: Multiple recipients of list ORACLE-L
Waleed,
That's interesting. I just looked at the emc site and
still do not see anything that would lead me to
believe that they support hardware striping except for
the IBM Sequential Data Striping.
This was for the Symetrix 3000, 5000 & 8000 line.
I would be keenly interested to know as we have many
TB here of EMC and all of it is software striped.
What product line are you referring to? When did they
start?
Thanks,
Bill
- "Khedr, Waleed" <Waleed.Khedr_at_FMR.COM> wrote:
> Now they have hardware striping.
>
> Regards,
>
> Waleed
>
> -----Original Message-----
> Sent: Wednesday, April 24, 2002 2:29 PM
> To: Multiple recipients of list ORACLE-L
>
>
> My understanding was that EMC does not stripe its
> disks. they just have mirror and RAID S.
>
>
> --- Sr DBA <sr_dba_at_hotmail.com> wrote:
> > Why would you software stripe it if you are using
> > EMC?
> > ----- Original Message -----
> > From: "Johnson Poovathummoottil"
> <joni_65_at_yahoo.com>
> > To: "LazyDBA.com Discussion"
> <oracledba_at_lazydba.com>
> > Sent: Wednesday, April 24, 2002 8:57 AM
> > Subject: Number of File systems to use.
> >
> >
> > > All,
> > >
> > > Although this has been discussed many times. My
> > boss
> > > wants other opinions on this.
> > >
> > > We EMC storage whcih uses 9 gig disks.
> > > We also use veritas volume manager.
> > >
> > > We plan to upgrade our SUN ultra e6500 to sun
> fire
> > 15K
> > > machine. During to move we want to do a little
> > reorg.
> > > This machine will have 6 partitions, 3 for the
> > OLTP
> > > databases and 3 for the warehouse.
> > >
> > > The warehouse currently uses 20 file systems 25
> GB
> > > each(3 disks raid S) for data and index. We have
> > > agreed on making the file systems to use 4 disks
> > and
> > > stripe it with 256 KB stripe size. There are two
> > > opinions regarding the number of file systems.
> > >
> > > 1: 50 file systems of 15 GB each. In this case
> the
> > 4
> > > disks are not fully used. What is ramainig after
> > the
> > > 15 GB can be alloted to other file systems other
> > than
> > > the ones used by the database. Advantage IO
> spread
> > > over disks.
> > >
> > > 2: 20 file systems of 34 GB each. All four disks
> > are
> > > fully used. IO over 80 disks.
> > >
> > > Question.:
> > > 1:Since we are using EMC do we need to pay so
> much
> > > attention to spreading IO.
> > > 2: Any problems/advantages in having too many
> file
> > > systems.
> > >
> > > Please give all your opinions.
> > >
> > >
> > >
> > >
> __________________________________________________
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> > more
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> > >
> > > --------
> > > Oracle documentation is here:
> >
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>
>
> __________________________________________________
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> Author: Johnson Poovathummoottil
> INET: joni_65_at_yahoo.com
>
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> Author: Khedr, Waleed
> INET: Waleed.Khedr_at_FMR.COM
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Do You Yahoo!?
Yahoo! Games - play chess, backgammon, pool and more
http://games.yahoo.com/
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Received on Wed Apr 24 2002 - 15:24:02 CDT
