This is a multi-part message in MIME format. ------=_NextPart_000_003D_01C24D27.15F6BBF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Simon; If you are using NSF, your tested numbers are about right. If you use the priority s/w from the vendors like, RAIDZone or Blue Arc you can get better performance. Blue Arc will take you to about 120 Mb/s, I believe, but the cost is very high. If you need a very high speed access, we expect to introduce a high performance storage solution at Super Computing 2002 in Nov. I have seen demonstrated transfer rates between 250 - 300 Mega bytes per second. We are using Red Hat distribution of Linux. We are not ready to make this information available to the general public just yet, as the final product is not yet fully developed, so I would ask you not to put this information on any boards. Thanks Bill Harman, Director, High Performance Cluster Systems 800-876-8649 Ext 8828 william.harman@ebizmart.com www.ebizenterprises.com/hpc -----Original Message----- From: bioclusters-admin@bioinformatics.org [mailto:bioclusters-admin@bioinformatics.org] On Behalf Of Vsevolod Ilyushchenko Sent: Monday, August 26, 2002 5:03 PM To: bioclusters@bioinformatics.org Subject: [Bioclusters] 3ware 7850 RAID 5 performance Hi, Is anyone using a 3ware 7850 hardware RAID card set to RAID 5? According, to the docs, it's using something called "accelerated RAID 5" which should give read *and write* speeds in excess of 100 Mb/s. Several tests on a dual Linux P3 1.26 Ghz box with ext3 indicate much lower speeds: 47 Mb/s sequential read and 12 (twelve!) Mb/s sequential write. There are 5 drives in the RAID 5 configuration. Has anyone benchmarked this card under Linux? What numbers are people seeing? Can anyone suggest parameters to tune? Thanks, Simon -- Simon (Vsevolod ILyushchenko) simonf@cshl.edu http://www.simonf.com simonf@simonf.com Even computers need analysts these days! ("Spider-Man") _______________________________________________ Bioclusters maillist - Bioclusters@bioinformatics.org https://bioinformatics.org/mailman/listinfo/bioclusters ------=_NextPart_000_003D_01C24D27.15F6BBF0 Content-Type: text/x-vcard; name="William A Harman.vcf" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="William A Harman.vcf" BEGIN:VCARD VERSION:2.1 N:Harman;William;A FN:William A Harman NICKNAME:Bill ORG:EBIZ Enterprises, Inc.;HPC TITLE:Director, High Performance Cluster Systems TEL;WORK;VOICE:800-876-8649 Ext 8828 TEL;HOME;VOICE:801-572-9252 TEL;CELL;VOICE:801-913-8746 TEL;WORK;FAX:281-403-4328 TEL;HOME;FAX:801-571-4927 ADR;WORK;ENCODING=3DQUOTED-PRINTABLE:;281-403-8828;13715 Murphy = Road,=3D0D=3D0ASuite D;Stafford;TX;77477-4900;USA LABEL;WORK;ENCODING=3DQUOTED-PRINTABLE:281-403-8828=3D0D=3D0A13715 = Murphy Road,=3D0D=3D0ASuite D=3D0D=3D0AStafford, TX 77477-49=3D 00=3D0D=3D0AUSA ADR;HOME:;;Virtual Office;Satl Lake City;UT;84095-3124;USA LABEL;HOME;ENCODING=3DQUOTED-PRINTABLE:Virtual Office=3D0D=3D0ASatl Lake = City, UT 84095-3124=3D0D=3D0AUSA URL;HOME:http://www.ebizmart.com URL;WORK:http://www.ebizenterprises.com EMAIL;PREF;INTERNET:bill.harman@ebizenterprises.com REV:20020515T164928Z END:VCARD ------=_NextPart_000_003D_01C24D27.15F6BBF0--