Date: Thu, 17 Feb 2005 01:51:40 -0500 From: "Peter C. Lai" <sirmoo@cowbert.2y.net> To: Greg 'groggy' Lehey <grog@FreeBSD.org> Cc: Ean Kingston <ean@hedron.org> Subject: Re: vinum vs. DPT smartcacheIV raid Message-ID: <20050217065140.GE20992@cowbert.2y.net> In-Reply-To: <20050216231451.GA69640@wantadilla.lemis.com> References: <20050216065700.GB20992@cowbert.2y.net> <3604.216.220.59.169.1108565897.squirrel@216.220.59.169> <20050216151615.GD20992@cowbert.2y.net> <3004.216.220.59.169.1108569144.squirrel@216.220.59.169> <20050216231451.GA69640@wantadilla.lemis.com>
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[-- Attachment #1 --] On Thu, Feb 17, 2005 at 09:44:51AM +1030, Greg 'groggy' Lehey wrote: <snip> > Recall that there are no real hardware RAID controllers on the > market. The difference is whether you have a special processor on the > controller card or not. To determine which is faster, you need to > compare the hardware on the card and the hardware in the system. </snip> If I understand the DPT manual correctly: My cards have a motorola 68000-based cpu. The "faster" smartraid cards have motorola 68020-based cpus as well as much larger cache. My card has a max transaction rate of 20MHz. It sends 2bytes down the wire per clockcycle (SCSI DDR? LOL) so it has a max througput of 40Mbps. -- Peter C. Lai University of Connecticut Dept. of Molecular and Cell Biology Yale University School of Medicine SenseLab | Research Assistant http://cowbert.2y.net/ [-- Attachment #2 --] 0 *H 01 0 + 0 *H 00: 0 *H 0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA0 040414064257Z 050414064257Z0D1 0 UThawte Freemail Member1!0 *H sirmoo@cowbert.net0"0 *H 0 n͛= 3 Zos$us];HT MJ5- z ړշhK@n!,@:CEu> ޅd/ 'i:ؔ3n7Wh}H1H нdb&TU7 Z#9iˤ$݅(:^*O.}'8`+(V# *DZqFT-r%ʸU1~XWq^'pLNv5 /0-0 U 0sirmoo@cowbert.net0 U 0 0 *H VD+PyfPQdA2Z LH˳` |,̀5']JDU5 KW62[ 2^9-Rpu沎680?0 0 *H 01 0 UZA10U Western Cape10U Cape Town10U Thawte Consulting1(0&U Certification Services Division1$0"UThawte Personal Freemail CA1+0) *H personal-freemail@thawte.com0 030717000000Z 130716235959Z0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA00 *H 0 Ħ<UsUNʙZ hup [v :aQP 0cZ,p+Z?qV˯< 6$*+w=+>@dקe*TH<a@ dr` 00U 0 0CU <0:08642http://crl.thawte.com/ThawtePersonalFreemailCA.crl0 U 0)U "0 0 10UPrivateLabel2-1380 *H HP . fgCL!6 -6/ P p<ab:~ t%Pb'qW%ݩ9 Oe_N4[5MwV!x!5$ F]_eO1D0@0i0b1 0 UZA1%0#U Thawte Consulting (Pty) Ltd.1,0*U#Thawte Personal Freemail Issuing CA 0 + 0 *H 1 *H 0 *H 1 050217065140Z0# *H 1 Ma z!.|U<|0R *H 1E0C0 *H 0*H 0 *H @0+0 *H (0 *H iً~]-}a uP}`܌4ޱL¬{;LkB f/zv="%3OʙZSHtHT); K!/C| #7R4EqŸO Z0 M1{r mxFws ^_:ٷ 5zGO0h亵pW_ܚ<lVN7 5!N?t.8q}|ecxſ -*= Jhelp
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