RE: OT: USB/Firewire external hard drives for 10g RAC testing - a ny recommendations?

From: Boivin, Patrice J <BoivinP_at_mar.dfo-mpo.gc.ca>
Date: Mon, 06 Dec 2004 10:30:20 -0400
Message-id: <1A4AC4BAB9C50A42854582B69B08C0340624C288@MSGMARBIO05>

Oracle RAC instructor... They offered a class in Florida a few weeks back, I hear they had that set up with two PCs (I assume Dells) and external disks but I don't have any more info.

Sounds like a great way to learn the product.

The type of drive you use is important for the firewire setup, I read somewhere that not all drives can be recognized.

Patrice.

-----Original Message-----
From: dba1 mcc [mailto:mccdba1_at_yahoo.com] Sent: December 4, 2004 11:25 AM
To: mzito_at_gridapp.com; oracle-l_at_freelists.org Subject: Re: OT: USB/Firewire external hard drives for 10g RAC testing - any recommendations?

recently I also test firewire hard disk with AS 2.1 and 3.0. I still have problem to make it work. I follow documents on
http://www.puschitz.com/ and still can NOT make firewire hard disk recognize by redhat. I did discuss with ORACLE RAC instructor and he told me use SCSI external disk instead of Firewire. He said SCSI disk far more stable than IDE (firewire). he said "ORACLE LINUX/RAC" course also use SCSI disk wirh United LINUX (will change to redhat AS3.0 soon).

My problem are:

1. on AS 2.1 UP5: . load firewire driver successful . lsmod and lspci all indicate firewird adapter work . rescan-scsi-bus.sh can NOT find disk. . unload/reload firewire modules and rescan all make no difference.
2. on AS 3.0 UP3 (2.4.21-20) . newest Redhat kernel (2.4.21-20 AS 3.0 UP3) does NOT understand firewire. I download kernel-2.4.21-15.ELorafw1.i686.rpm from ORACLE site and triied to install it and got error messages "current kernel version newer than it". (rpm -ivh kernel-2.4.21-15.ELorafw1.i686.rpm)

Can you tell me how cah you make 2.4.21-20 work without use ORACLE driver?

Thanks.
--- Matthew Zito <mzito_at_gridapp.com> wrote:

>
> We do a lot of our non-software-development RAC work
> with Firewire
> drives and the LaCie are the best, both in terms of
> performance and
> stability.
>
> The only real requirements are that the sbp2 chipset
> on the firewire
> drive supports multiple login, which most these days
> do. USB will not
> work, by the way, only Firewire (though the combo
> firewire/USB drives
> should work no problems). The preferred drive we
> use is the LaCie
> porsche:
>
> http://www.lacie.com/products/product.htm?pid=10384
>
> in varying sizes. The big benefits are the small
> form factor, while
> still being a normal hard drive, and the
> stackability. It's also quiet
> enough for our developers to share their desks with
> them without
> complaining.
>
> The last note is that if you're using redhat es/as
> 3, I'd recommend
> upgrading to the latest version of the kernel, as we
> saw a number of
> high I/O stability problems when dealing with
> multiple firewire drives
> in our testing environment. Upgrading to (looks at
> a node) 2.4.21-20
> (the unsupported tree) fixed that entirely for us.
>
> Thanks,
> Matt
>
> --
> Matthew Zito
> GridApp Systems
> Email: mzito_at_gridapp.com
> Cell: 646-220-3551
> Phone: 212-358-8211 x 359
> http://www.gridapp.com
>
>
> On Dec 3, 2004, at 3:33 PM, Paul Drake wrote:
>
> > Need some space in a hurry, and I'd like to be
> able to play with RAC
> > over USB/Firewire.
> > This article
> > http://www.oracle.com/technology/pub/articles/
> > hunter_rac.html#Hardware%20&%20Costs
> > recommends a Maxtor Onetouch unit.
> >
> > Anyone care to share their experiences?
> >
> > thanks,
> >
> > Paul
> > --
> > http://www.freelists.org/webpage/oracle-l
>
> --
> http://www.freelists.org/webpage/oracle-l
>
                

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Received on Mon Dec 06 2004 - 08:34:19 CST