Re: [LAU] usb-2.0 harddisc

From: david <gnome@email-addr-hidden>
Date: Sat Aug 04 2007 - 07:17:18 EEST

I've run into PCs whose USB ports don't really supply the full nominal
USB power voltage (500mA). A USB2 drive housing I have here comes up as
USB1.1 unless I use a powered hub or external power supply for the drive
housing.

Also, older notebook hard drives can quite easily use 500mA just for the
drive - leaving nothing for the interface circuitry. And housings for
bigger drives (3.5" drives, for instance) almost always require an
external power supply. You can usually find out how much power a hard
drive requires by checking the manufacturer's label.

Michal Seta wrote:
> I have Vantec NexStar SX enclosures for my old laptop 2.5" IDE
> hardrives. I haven't used those drives for recording (yet, but i
> don't really use my computer for recording) but I have been happy with
> the performance. And they can be USB powered, too. The only drawback
> is that the aluminum is high-polish and fingerprints appear as soon as
> you take it out of the wrapper. They come with USB cable that has a 1
> port hub attached, 4 screws for your hd + a mini screwdriver and a
> leather-like case. I think they are a good deal for ~$20.
>
> http://www.vantecusa.com/ (sorry, but these pages are flash+gfx
> loaded, not much text...)
>
> ./MiS
>
> On 8/3/07, Mark Knecht <markknecht@email-addr-hidden> wrote:
>> On 8/3/07, Dragan Noveski <perodog@email-addr-hidden> wrote:
>>> Mark Knecht wrote:
>>>> USB 2.0 is plenty fast for recording audio tracks. you should not have
>>>> a problem with that at all, assuming it's a good disk and the system's
>>>> USB implementation is done correctly.
>>>>
>>>> Just mount the drive and run hdparm -tT to get an idea of the drive's
>>>> speed. I'm sure it will be fine.
>>>>
>>>> Cheers,
>>>> Mark
>>>>
>>>>
>>> mark, very much thanks for the response!
>>> i think i ll go for a combination of an ata-laptop-drive, with this
>>> usb-case-adapter for it.
>>> that seems cheap, and i do not need an extra power chord for the
>>> external drive than - which is important for me, since everything runs
>>> on solarpower, 12Vdc here.
>>>
>>> cheers,
>>> doc
>> Sounds nice not to have the power cords. I've got 3 Firewire drives
>> and often get tired of all the power connections. Each drive has a
>> different power supply and I've got to get them matched up correctly.
>> A small drive that gets power from the bus would be far nicer for fast
>> setup and tear down.
>>
>> Good luck.

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
Received on Sat Aug 4 08:15:01 2007

This archive was generated by hypermail 2.1.8 : Sat Aug 04 2007 - 08:15:02 EEST