linux-kernel - Re: 12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)!

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Date:	Thu, 31 Jul 2008 22:41:50 -0500
From:	Matt Garman <matthew.garman@...il.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	David Greaves <david@...eaves.com>, linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org, xfs@....sgi.com
Subject: Re: 12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)!

On Tue, Jul 08, 2008 at 04:39:34AM -0400, Justin Piszcz wrote:
> On Tue, 8 Jul 2008, Justin Piszcz wrote:
>> On Tue, 8 Jul 2008, David Greaves wrote:
>>> Justin Piszcz wrote:
>>>> Each PCI-e x1 card has 1 veliciraptor on it now.
>>>> Got an x4 card wit 4 sata ports:
>>> Useful - which card?
>>
>> StarTech 4 Port PCI Express x4 SATA II Card Model PEXSATA24E
>>
>>
> Chipset: Marvell 88SX7042
> SATA Connectivity: Use four internal ports at the same time or two internal 
> and two external ports
>
> Which is fully supported in the latest kernels (didn't try an old kernel):
>
> linux-2.6.25.10/drivers/ata/sata_mv.c
>
>   /* Marvell 7042 support */
>   { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 },

How have that card and the array attached to it been doing since you
originally posted this?

Doesn't that HighPoint 23xx card also use the Marvell 88SX7042 chip?
I remember seeing the threads about the HighPoint card silently
corrupting data by silently writing over parts of the disk(s) with
its own info.  I'm guessing that's not a "feature" of the Marvell
chip, but still... admittedly irrational fear here :)

It would be nice if that Supermicro 8-port SATA card (AOC-SAT2-MV8)
was available in PCIe... I wonder if it's possible to just graft
multiple SiI 3132 controllers (2 SATA each) on a single PCIe card?

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