Date: Wed, 7 Nov 2001 04:01:35 +0000 From: Greg Lehey <grog@FreeBSD.org> To: =?iso-8859-1?Q?S=F8ren_Schmidt?= <sos@freebsd.dk> Cc: john_wilson100@excite.com, freebsd-hackers@FreeBSD.org, sos@FreeBSD.org Subject: Re: HPT370 RAID or Vinum? Message-ID: <20011107040135.E339@sydney.worldwide.lemis.com> In-Reply-To: <200109110541.f8B5fAC10992@freebsd.dk>; from sos@freebsd.dk on Tue, Sep 11, 2001 at 07:41:06AM %2B0200 References: <20010911090518.G733@canberra.worldwide.lemis.com> <200109110541.f8B5fAC10992@freebsd.dk>
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On Tuesday, 11 September 2001 at 7:41:06 +0200, Søren Schmidt wrote: > It seems Greg Lehey wrote: >>> I reckon if the RAID functions are implemented in HPT BIOS (in software), >>> I'll be better off with Vinum. >> >> Ultimately, all RAID is software RAID. The issue is just how it's >> implemented. > > Exactly. > >> I'd guess that the HPT will give you far worse performance than Vinum, >> though I'd be very interested to see confirmation or denial of this >> guess. If you feel like benchmarking, contact me first. > > And why is that ? for RAID's with the same parameters, I'd expect them > to perform equal, maybe with a sligtht advantage to the ATA driver since it > saves a few cycles by being tighter integrated. Agreed. I don't think the RAIDs will have the same parameters. Most of these cheap controllers have fairly simplistic algorithms. Note that I said "guess", though. In my language, that means "don't know for sure". I'd really like to see some objective benchmarks. Greg -- See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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