[Gllug] USB Discs

[Stephen Harker]

Daniel Andersson wrote:
>>Poor. USB is IIRC 12Mb/s, i.e., well over 100 times slower than a
>>typical SCSI or IDE disk. Firewire drives, while still slow compared
>>to "Real" disks, are at least much better at 400Mb/s -- comparable
>>to internal hard disks of a few years ago.
> 
> 
> not sure if my IDE disk is typical, but
> 
> /dev/hdc1:
>  Timing buffered disk reads:  64 MB in  7.27 seconds =  8.80 MB/sec
> 
> 
> that's not 100 times faster than 12MB/s

USB 1.1 is 12 Mb/s. Thats a SMALL b as in bits. 12 Mb/s is about 2 MB/s 
or so which is not very fast. IDE disks should go a lot quicker than 8.8 
MB/s when using DMA etc...
Steve




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