Date: Mon, 8 Dec 2003 16:21:52 +1100 From: JacobRhoden <jrhoden@unimelb.edu.au> To: freebsd-questions@freebsd.org Subject: Why would drive run at UDMA33? (Segate 80GB) Message-ID: <200312081621.52572.jrhoden@unimelb.edu.au>
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Hi, I have just purchased a new 80GB drive, howerver i noticed it is running significantly slower than my current 80gb drive. Dmesg says this: ad0: 76319MB <ST380021A> [155061/16/63] at ata0-master UDMA100 ad2: 76319MB <ST380011A> [155061/16/63] at ata1-master UDMA33 Why is one running at udma100 and my new one running at udma33? iosys reports it as 4 times slower! Is there any special tuning or kernel option i need to set? The segate website reports the following details aobut it: Model Number:ST380011A Capacity:80 GB Speed:7200 rpm Seek time:8.5 ms avg Interface:Ultra ATA/100 Jacob Rhoden Phone: +61 3 8344 4478 ITS Division Email: jrhoden@unimelb.edu.au Melbourne University Mobile: +61 403 788 386
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