Re: RAID5 over Serial-ATA success stories?

On Thu, Jan 08, 2004 at 09:06:46AM +0100, Måns Rullgård wrote:

Daniel Brahneborg [off-list ref] writes:

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It doesn't work with Silicon Image.

What doesn't work?  There are drivers, at least in 2.6.  Raid should
care about what sort of disks you use.

When using it for normal disks e2fsck reports bad blocks all
over the disk. When used for RAID, I get corrupted data.  Not
much, maybe every second time for a file of 500MB.
This is with the IDE driver.  With the SCSI driver, my computer
completely freezes when I activate my second network card (as I
reported earlier, unfortunately still without a solution).
RAID might work with that driver, but unless the network card
problem is solved, that doesn't help me.

That sounds rather odd.  Have you reported this to the appropriate
places?

I emailed the persons in the MAINTAINERS file that seemed
relevant (Jeff Garzik, mainly).  I don't really know where
else to go, I'm afraid.

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It doesn't work with VIA (yet, anyway).
It might work with HighPoint.

I've run RAID5 on a Highpoint RocketRAID 1540.  I used ATA disks with
SATA converters, though.  Works with both 2.4 and 2.6.

Sounds good to hear.  It's the second cheapest card for me.

Beware that several people have reported some rather strange problems
with the Highpoint cards.  You should get a deal to take it back if it
doesn't work.

I buy most things from komplett.se, they're nice with returns.

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I don't know if there's a driver for Adaptec.

Which Adaptec card?  The 12xx cards are fakeraid, but are supported as
normal cards.  The 24xx cards are true hardware RAID cards.  Linux
drivers exist for these, too.

It's the 12xx cards that I'm looking at. I don't want hardware
RAID, since hardware RAID5 costs an infinite amount of money.

Not really.  The Adaptec 24xx cards cost about the same as the disks
you attach to them.  I ordered one from a while ago, but the shop went
bankrupt before I got it, or at least their web site disappeared and
they stopped answering mail or phone calls.

The Adaptec card I found would cost $250, which is about $200
more than I can spend on it.  If I can't get RAID5 to work I'd
rather buy more disks and do RAID10.

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In case I have to replace my Silicon Image card, what should I replace
it with?  I'm currently leaning towards Promise TX4 (or TX2 if the VIA
driver is completed).

I stay as far away as I can from Promise and VIA.  Anything is usually
better than those two.

Why the warning about Promise?

I've had some bad experience with them, that's all.  They appear to be
incompatible with Alpha machines, but probably work better in PCs.

I have a PC, so I'm hoping for the best.  I'll still make sure
that I can return it if it fails.

/Basic

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