Date: Wed, 24 Oct 2001 11:58:57 +0100 From: "Lawrence Farr" <freebsd-isp@epcdirect.co.uk> To: <mike@sentex.net> Cc: <freebsd-isp@freebsd.org> Subject: RE: 3Ware Escalade vs. Adaptec 2400A - test results Message-ID: <002501c15c7a$e15cded0$c806a8c0@lfarr> In-Reply-To: <001c01c15ba1$74cf9cf0$c806a8c0@lfarr>
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Here are the results of a quick test of the Adaptec 2400A vs 3Ware 7xxx Series. I have 4 x Western Digital WD100BB 100Gb Drives connected to an Adaptec 2400A controller with 32Mb of cache setup as a Raid5 volume. Using a simple script to generate a 1Gb file and read it back, I filled the disk completely. From the logs it generated: 64Kb Stripe size: Pass 6 - 1048576 kb written in 89 seconds, at 11781 kb/Sec Pass 6 - 1048576 kb read in 35 seconds, at 29959 kb/Sec Pass 7 - 1048576 kb written in 88 seconds, at 11915 kb/Sec Pass 7 - 1048576 kb read in 36 seconds, at 29127 kb/Sec 256Kb Stripe size: Pass 6 - 1048576 kb written in 84 seconds, at 12483 kb/Sec Pass 6 - 1048576 kb read in 42 seconds, at 24966 kb/Sec Pass 7 - 1048576 kb written in 84 seconds, at 12483 kb/Sec Pass 7 - 1048576 kb read in 43 seconds, at 24385 kb/Sec And the 3Ware in Raid5 using 8 disks, 64k Stripe size: Pass 23 - 1048576 kb written in 115 seconds, at 9118 kb/Sec Pass 23 - 1048576 kb read in 15 seconds, at 69905 kb/Sec Pass 24 - 1048576 kb written in 116 seconds, at 9039 kb/Sec Pass 24 - 1048576 kb read in 15 seconds, at 69905 kb/Sec Not really a straight comparison as the 3Ware has more spindles, but that's as quick as it goes. Iozone reckons: File size set to 10240 KB Time Resolution = 0.000005 seconds. Processor cache size set to 1024 Kbytes. Processor cache line size set to 32 bytes. File stride size set to 17 * record size. random random bkwd record stride KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 10240 4 17051 12833 201499 201916 168562 6888 182840 310519 171512 16444 17486 171286 171409 It's a damn shame about 3Ware. Lawrence Farr EPC Direct Limited mailto:lawrence@epcdirect.co.uk T:01179666123 F:01179666111 M:07970780901 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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