[OmniOS-discuss] areca or lsi

[Schweiss, Chip]

I have used LSI HBAs exclusively.  Performance and reliability has been
very good.

The only problem I have consistently seen is if I hotplug a sas expander
with or without disks attached it will crash the system at least half the
time.  I have simple resolved never doing that hot.

I have stuck with LSI because of using LSI SAS expanders to keep the
communication across venders to the minimum.  The last thing I want is to
be in the middle of finger pointing between venders.

-Chip


On Thu, Jul 18, 2013 at 7:03 PM, Saso Kiselkov <skiselkov.ml at gmail.com>wrote:

> On 18/07/2013 23:48, Tobias Oetiker wrote:
> > Folks,
> >
> > We are specing a new omnios server box ... and were just told by
> > our vendor, that LSI HBAs were much slower (50%) than Areca Controllers
> > running in JBOD mode ... and that they would therefore recommend
> > Areca (we use areca for raid6 in linux boxes, but have never used it in
> JBOD
> > mode with illumos, yet).
> >
> > Which controller would you choose for a new system ?
>
> Hi Tobi,
>
> I'm using LSI exclusively, never had an issue with them. Their 6G SAS
> HBAs are very affordable and remarkably solid. As for the ARECA vs LSI
> debate, I'd contest that there's going to be any appreciable performance
> difference. *IF* you're running in JBOD, the card should essentially be
> a simple pipe for SCSI commands to the SAS bus with as little overhead
> possible. I know for a fact that saturating a 6G SAS link isn't a
> problem with LSI cards, so I'm somewhat at a loss as to where the
> performance difference is supposed to lie.
>
> Cheers,
> --
> Saso
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>
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