Only WDMA2?

Kris Kennaway kris at obsecurity.org
Mon Aug 9 16:11:11 PDT 2004


On Mon, Aug 09, 2004 at 09:06:18PM +0000, Mark wrote:
> Dear Sirs:
> 
> In my FreeBSD 4.9R server, I use an ARAID99 1000L RAID system. However, it
> only runs at "WDMA2":
> 
> Aug  9 21:08:36 asarian-host /kernel: ad0: 39205MB <ASI ARAID99 1000 Rev
> 2.5> [79656/16/63] at ata0-master WDMA2
> 
> WDMA2 only offers 16 MB/s, whereas ATA133 of course, offers 133 MB/s. The
> question is, is there a reason FreeBSD only uses WDMA2 for this device? (it
> contains two MAXTOR 40G ATA133 disks, connected to an ATA133 IDE port as
> single master).
> 
> Second question, subsidiary, can I force a higher mode than WDMA2? (like
> UDMA 133).
> 
> Much obliged,

Check the cable..perhaps you only have a 40-pin cable instead of the
80-pin cable you need for higher speeds.

Kris
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