*BSD News Article 95996


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From: ------ (------)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: SCSI Raid & freebsd
Date: Fri, 23 May 1997 09:03:00 GMT
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On Wed, 21 May 1997 07:14:55 GMT, ------ (------) wrote:

<SNIP>

>I wanted to implement raid on a FreeBSD box using a DPT scsi raid
>controller card. Unfortunately, it appears there are no drivers
>available for DPT cards under FreeBSD. 
>
>My question: who has implemented RAID successfully with minimum
>hassle/downtime under FreeBSD? I'd like specifics (ie: controller
>card, raid level, raid subsystem - # drives, type of drives, and also
>what you use it for).

<SNIP>

A follow-up to my own post to share some info. I've read through
archived mailing list posts at www.freebsd.org and have found the
following:

1) DPT drivers may/may not be coming out any day now...

2) Adaptec drivers are already available (ie 2940U/UW)
	Stable?

3a) In order to implement SCSI:
	a) You will need a supported SCSI controller card 
		(ie, adaptec 2940UW)
	b) A SCSI-to-SCSI raid controller
		(ie mylex DAC960SU)
	c) connect the two together along with any
		associated cabling/chassis/etc...

	Voila! now you have RAID.

3b) The reason for SCSI-to-SCSI solution is due to the fact there 
	exists no direct support for a RAID SCSI controller card.

The Mylex DAC960SU/SUI seems like a good choice as any for a
scsi-to-scsi configuration.

Any comments on this info? 

TIA
Susan10