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Date:      Sun, 9 Jan 2000 16:16:28 -0800 (PST)
From:      Tom <tom@sdf.com>
To:        Alex Huppenthal <alex@aspenworks.com>
Cc:        Steve Kaczkowski <steve@inc.net>, "Randy A. Katz" <randyk@ccsales.com>, dannyman <dannyman@dannyland.org>, freebsd-isp@FreeBSD.ORG
Subject:   Re: RAID for FreeBSD + Performance optimization
Message-ID:  <Pine.BSF.4.05.10001091612590.14799-100000@misery.sdf.com>
In-Reply-To: <3878F18E.29BFC955@aspenworks.com>

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On Sun, 9 Jan 2000, Alex Huppenthal wrote:

> Excuse me, I'm confused. Where can I find a list of RAID controllers
> supported in the FreeBSD
> Operating System?

  Errr... the documentation?  There is a HARDWARE.TXT somewhere with all
of that in it.

> Is there a 'standard' SCSI controller interface specification on the PCI
> bus side, that many manufacturer's build to? (chuckle)

  No.

> Otherwise, is the consensus about a $1,000 price range SCSI RAID
> controller ?

  I'd say between $500 and $1,500 US, depending on performance and
features.

> For Operating System performance, do many of you setup your SWAP drive
> on a separate SCSI Controller? Seems that this configuration would
> improve performance significantly. (especially running RAID 5)

  Depends on whether you intend on swapping that much or not.

  RAID controllers and good disks are expensive.  If swapping is using up
a so much disk bandwidth that it might require a dedicated channel, then
you might want to make sure you have enough RAM first.

> Perhaps put the /tmp or /usr/tmp on that? hmmm or ram disk?
> 
> 
> Cheers,
> 
> 
>  -Alex

Tom



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