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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--RASg3xLB4tUQ4RcS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Feb 17, 2005 at 09:44:51AM +1030, Greg 'groggy' Lehey wrote: <snip>=20 > 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 (SC= SI DDR? LOL) so it has a max througput of 40Mbps. --=20 Peter C. Lai University of Connecticut Dept. of Molecular and Cell Biology Yale University School of Medicine SenseLab | Research Assistant http://cowbert.2y.net/ --RASg3xLB4tUQ4RcS Content-Type: application/x-pkcs7-signature Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIIIlAYJKoZIhvcNAQcCoIIIhTCCCIECAQExCzAJBgUrDgMCGgUAMAsGCSqGSIb3DQEHAaCC BhgwggLRMIICOqADAgECAgMMH+owDQYJKoZIhvcNAQEEBQAwYjELMAkGA1UEBhMCWkExJTAj BgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA0MDQxNDA2NDI1N1oXDTA1MDQxNDA2 NDI1N1owRDEfMB0GA1UEAxMWVGhhd3RlIEZyZWVtYWlsIE1lbWJlcjEhMB8GCSqGSIb3DQEJ ARYSc2lybW9vQGNvd2JlcnQubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA xA5u/s2bmcc96AAzAw3xp1rBb3P0JHVzG5XtXTtIgMLZwVQJTQWYSo4bNS0Jl4x6sO7yHxOI B7eJ2eOx2pMPhdW3lLloukuQQI+1x9Ti3W4h0yxAhn867UPR1UWz0xp1PoO4j9wg9N6FZC+m ACdp/o74o/86FaTYlLXPM243VwfRaIQPfRjDGsFIMUga9yDQvWRizxKS0ucm3rtUohizhdtV 2DeXCYOOv1ojOaRpBcukJPXdhYcoOl4qxU/YBtou5n0RJzhggSvMKKJWIwwqF0RacYdGVMst crIlsMq4VTG/i+F+lPX5+ugHWPOZV3Fe17eTJ/BwTKe8Tr4QduA1rwIDAQABoy8wLTAdBgNV HREEFjAUgRJzaXJtb29AY293YmVydC5uZXQwDAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQQF AAOBgQCXEIquVkTtK1C/eWYFUIQP1+JRA2QT5LxBMlrPDfOHGvtMSNbLs7y2YJXur8KFkwCo 4XybEqfcGyyAss2A1gE1BvagvCeAXUqTEbtEklUEGsM1Fh/XS1c2ug/UMonKW54LrgXUGxwy Xjn6LdBSvH/w5/Fw6Yp1juayjvY2l5k46DCCAz8wggKooAMCAQICAQ0wDQYJKoZIhvcNAQEF BQAwgdExCzAJBgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNh cGUgVG93bjEaMBgGA1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmlj YXRpb24gU2VydmljZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVl bWFpbCBDQTErMCkGCSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAe Fw0wMzA3MTcwMDAwMDBaFw0xMzA3MTYyMzU5NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQK ExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29u YWwgRnJlZW1haWwgSXNzdWluZyBDQTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8 VXNV+065yplaHmjAdQRwnd/p/6Me7L3N9VvyGna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7d yfArhVqqP3FWy688Cwfn8R+RNiQqE88r1fOCdz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUP SAR/p7bRPGEEQB5kGXJgt/sCAwEAAaOBlDCBkTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1Ud HwQ8MDowOKA2oDSGMmh0dHA6Ly9jcmwudGhhd3RlLmNvbS9UaGF3dGVQZXJzb25hbEZyZWVt YWlsQ0EuY3JsMAsGA1UdDwQEAwIBBjApBgNVHREEIjAgpB4wHDEaMBgGA1UEAxMRUHJpdmF0 ZUxhYmVsMi0xMzgwDQYJKoZIhvcNAQEFBQADgYEASIzRUIPqCy7MDaNmrGcPf6+svsIXoUOW lJ1/TCG4+DYfqi2fNi/A9BxQIJNwPP2t4WFiw9k6GX6EsZkbAMUaC4J0niVQlGLH2ydxVyWN 3amcOY6MIE9lX5Xa9/eH1sYITq726jTlEBpbNU1341YheILcIRk13iSx0x1G/11fZU8xggJE MIICQAIBATBpMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAo UHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBD QQIDDB/qMAkGBSsOAwIaBQCggbEwGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG 9w0BCQUxDxcNMDUwMjE3MDY1MTQwWjAjBgkqhkiG9w0BCQQxFgQUDdFNsLKIpmGwGx56Ic4u hXxVPHwwUgYJKoZIhvcNAQkPMUUwQzAKBggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYI KoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcNAwICASgwDQYJKoZIhvcNAQEBBQAEggEA Eqxp2YvnxwW80n5dD4jR5gj8tfq/4C19EWEJdfm1UL99YMbcjKw03rFM1MKsoeR7wpY77EyI axVCGQqg3mYvhBHceoJ2PSKjJTOyT4ft/ZTKmVqVrVOhSHS8SFQpOwyHvRmASyGpL+dD4Hwg uQ0jozeGUqqv/zQGAkXccejcxbhPHlqNMB+yAq6eTdQxE3tytBqI7x1tpHjwRnfT9HOBIMte Xxi5lpo62bcNNQh6R08wjchovvrkurXrcNxXr1/cmo6aPNxsVrCklk7ANx7VNfEWIU6YgT/8 pgSfdLYuuThxsZkb5X2jFXxlY6d4BJbFv40MLSoU7aTEPQlKCeDghA== --RASg3xLB4tUQ4RcS--
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