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Date:      Sat, 29 Mar 2003 13:48:15 -0600
From:      Len Conrad <LConrad@Go2France.com>
To:        freebsd-hardware@freebsd.org
Subject:   Re: problem on 1TB filesystem RAID 5 3ware
Message-ID:  <5.2.0.9.0.20030329102238.02b104b0@mail.go2france.com>
In-Reply-To: <kchb8vgf6eksv203ec47b6848pvmv8o63u@4ax.com>
References:  <YKrfnB.A.egN.yEbg-@coal.sentex.ca> <YKrfnB.A.egN.yEbg-@coal.sentex.ca>

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>There have been broken 3ware firmwares in the past that specifically
>effected RAID5. A quick test of the same hardware under LINUX or win2k
>would confirm if this is another firmware issue or driver specific. Another
>common issue across all platforms (i.e. firmware issue) was changing the
>disk stripe to anything other than the default 64k on RAID0 or 10.  This
>too would break things on all operating systems.

We'd like to use the 3ware 7000-2 in non-RAID JBOD, to get the supposed 
speed benefit of the 3ware "switch fabric", lower CPU overhead, etc. in 
high-volume SMTP relays.

Will whatever 3ware+FreeBSD somewhat "discutable" 3ware problems show up in 
JBOD mode or are the problems limited to RAID?

Does anybody have experience or URL that says the 3ware 7000-2 @ $100 is 
sufficiently "better" to justify it over an Promise "Ultra133 TX2" @ $40?

Len



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