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Re: Slow external USB enclosure with SATA disk

On Wed, Aug 21, 2013 at 08:16:32AM -0700, Andy Ruhl wrote:
> I recently bought a USB3 disk enclosure for a SATA disk. I put a disk in
> there, and writes are really slow with NetBSD. Less than 1MB/s. I formatted
> it normally, I made a NetBSD fdisk partition, then made a disklabel with
> just one slice, called sd0a which fills the entire fdisk partition. I tried
> formatting with regular ffs and also with -O 2. The format process was
> pretty slow for both filesystem types, so I guess the problem is lower down.

I suspect that it attaches only in USB 1.1 mode, not in 2.0.

Can you please provide the full output of "dmesg" from your system?
That should tell us which USB controller it gets connected to.

        Kind regards

Matthias Scheler                        

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