[OpenIndiana-discuss] BAD WD drives - defective by design?

[Roy Sigurd Karlsbakk]

And, yes, they're connected to an LSI SAS expander from Super Micro. Works well with Seagate and Hitachi, but not with WD....

----- Original Message -----
> The drives are attached to a backplane?
> 
> Try using 4k sector sizes and see if that improves it - I've seen and
> been part of a number of discussions which involved this - and you, I
> think, actually.
> 
> - Rich
> 
> On Mon, Aug 29, 2011 at 5:07 PM, Roy Sigurd Karlsbakk
> <roy at karlsbakk.net> wrote:
> > Hi all
> >
> > It seems recent WD drives that aren't "Raid edition" can cause
> > rather a lot of problems on RAID systems. We have a few machines
> > with LSI controllers (6801/6081/9201) and we're seeing massive
> > errors occuring. The usual pattern is a drive failing or even a
> > resilver/scrub starting and then, suddenly, most drives on the whole
> > backplane report errors. These are usually No Device (as reported by
> > iostat -En), but the result is that we may see data corruption at
> > the end. We also have a system setup with Hitachi Deskstars, which
> > has been running for almost a year without issues. One system with a
> > mixture of WD Blacks and greens showed the same errors as described,
> > but has been working well after the WD drives were replaced by
> > deskstars.
> >
> > Now, it seems WD has changed their firmware to inhibit people from
> > using them for other things than toys (read: PCs etc). Since we've
> > seen this issue on different controllers and different drives, and
> > can't reproduce it with Hitachi Deskstars, I would guess the
> > firmware "upgrade" from WD is the issue.
> >
> > Would it be possible to fix this in ZFS somehow? The drives seem to
> > work well except for those "No Device" errors....
> >
> > Vennlige hilsener / Best regards
> >
> > roy
> > --
> > Roy Sigurd Karlsbakk
> > (+47) 97542685
> > roy at karlsbakk.net
> > http://blogg.karlsbakk.net/
> > --
> > I all pedagogikk er det essensielt at pensum presenteres
> > intelligibelt. Det er et elementært imperativ for alle pedagoger å
> > unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de
> > fleste tilfeller eksisterer adekvate og relevante synonymer på
> > norsk.
> >
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> >
> 
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-- 
Vennlige hilsener / Best regards

roy
--
Roy Sigurd Karlsbakk
(+47) 97542685
roy at karlsbakk.net
http://blogg.karlsbakk.net/
--
I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.