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

To: Matt Garman <matthew.garman@xxxxxxxxx>
Subject: Re: 12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)!
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Fri, 1 Aug 2008 04:12:45 -0400 (EDT)
Cc: David Greaves <david@xxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
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On Thu, 31 Jul 2008, Matt Garman wrote:

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?
No problems to report yet, working well, I wish I had multiple x4 or x16 slots and use those instead of x1 cards (the mobo would need to support the I/O as well)..


Doesn't that HighPoint 23xx card also use the Marvell 88SX7042 chip?
I read remeber 'locked' 64kb read problem but not any corruption issue.

I remember seeing the threads about the HighPoint card silently
corrupting data by silently writing over parts of the disk(s) with
Also I MD5SUM -c (verify) 100-150GiB of data daily or so to make sure it is OK, so far, no problems.

its own info.  I'm guessing that's not a "feature" of the Marvell
chip, but still... admittedly irrational fear here :)
Have not seen it yet.


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?
Yes, I asked Supermicro about it and they never mailed me back about a PCIe version..

That's a good question, I suppose if it was easy it would have already been done?

Justin.


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