Author: Matt Taylor
Date: 02:31:35 02/21/03
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On February 20, 2003 at 18:23:22, Robert Hyatt wrote: <snip> >My cpus don't run blazing hot, although there is another significant performance >difference >in our boxes. I can copy 8 gigs of data in 30 seconds. That is important for >chess endgames >with tables. I don't think you can get 1/10th of that speed with IDE drives of >any kind. >But that is yet a different subject. <snip> (2) Western Digital 80GB 8MB cache 7200 rpm 3ware 7000-2 RAID controller Buffered Read: 94 MB/sec Sequential Read: 49 MB/sec Random Read: 6 MB/sec Buffered Write: 87 MB/sec Sequential Write: 58 MB/sec Random Write: 12 MB/sec This would be 1.4 GB in 30 seconds. Nowhere near 8 GB, but it's more than 10%. Also, this was done on an NT box using NTFS, and NTFS is notoriously slow. Seeking all over a 7200 rpm drive really cripples the "sequential" speed. That is the low-end model RAID controller in 2-disk RAID-0. 8-disk RAID-0 is pretty fast. They claim speeds up near 600 or 700 MB/sec in which case it would be copying 18 GB in 30 seconds. The 7500-8 costs something like $350 or $250, I believe. That array would be about $1,000. The 8500-8 is what I would use if money were no object. -Matt
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