Date: Tue, 23 Feb 1999 20:14:05 -0600 From: Bob Willcox <bob@luke.pmr.com> To: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: LVD transfer rate Message-ID: <19990223201405.A33936@luke.pmr.com> In-Reply-To: <199902212218.XAA00376@qix>; from Jean-Marc Zucconi on Sun, Feb 21, 1999 at 11:18:58PM %2B0100 References: <199902212218.XAA00376@qix>
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I have two of these drives on my system (3.1-stable as of a couple of
days ago) which includes an ASUS GX DLS motherboard with an Adaptec 7896
dual channel SCSI adapter on it. Both of my drives show up as so:
da1 at ahc0 bus 0 target 1 lun 0
da1: <IBM DDRS-39130D DC1B> Fixed Direct Access SCSI-2 device
da1: 80.0MB/s transfers (40.0MHz, offset 15, 16bit), Tagged Queueing Enabled
da1: 8715MB (17850000 512 byte sectors: 255H 63S/T 1111C)
This is on channal A which has a total of three drives on it (all LVD: 1
Seagate Cheeta and two of the IBM DDRS's).
Could you give some further details about your system (FreeBSD release,
what Adaptec chipset, etc.)?
On Sun, Feb 21, 1999 at 11:18:58PM +0100, Jean-Marc Zucconi wrote:
> I just installed a LVD drive and the boot message reports only 40MB/s
> transfer rate. I expected 80MB/s - did I something wrong ?
>
> da1: <IBM DDRS-39130D DC1B> Fixed Direct Access SCSI-2 device
> da1: Serial Number RE205733
> da1: 40.000MB/s transfers (20.000MHz, offset 15, 16bit), Tagged Queueing Enabled
> da1: 8715MB (17850000 512 byte sectors: 255H 63S/T 1111C)
>
> This is the only device on the LVD bus (Adaptec controller on a Asus
> P2BDS). I also have drives on the 50pin connector, but this should not
> be the problem ?
>
> Jean-Marc.
>
>
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--
Bob Willcox The man who follows the crowd will usually get no
bob@luke.pmr.com further than the crowd. The man who walks alone is
Austin, TX likely to find himself in places no one has ever
been. -- Alan Ashley-Pitt
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