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Date:      Thu, 08 Feb 2007 15:52:15 +0100
From:      Fluffles <etc@fluffles.net>
To:        Andrew Pantyukhin <infofarmer@FreeBSD.org>
Cc:        freebsd-hardware@freebsd.org, rsh <bsdgroup.md@gmail.com>
Subject:   Re: External HDD
Message-ID:  <45CB391F.6070903@fluffles.net>
In-Reply-To: <cb5206420702080629p237800f2xc80c1c3f3554f3f0@mail.gmail.com>
References:  <1170861895.87827.8.camel@localhost>	<45CA1107.1020609@fluffles.net>	<cb5206420702070958n1b02c5b2w3320ebd779c09791@mail.gmail.com>	<45CB2DE8.1090609@fluffles.net> <cb5206420702080629p237800f2xc80c1c3f3554f3f0@mail.gmail.com>

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Andrew Pantyukhin wrote:
> BTW, many 2,5" enclosures I've seen require two usb
> ports, the second one just to get more power.

Hm well with a Samsung drive you won't need an extra cable; at least not
with proper enclosure like i have. Works perfectly with one cable. Very
convenient to more 100GB along. :)

> I imagine you could get 30W from 12 dedicated USB ports
> :-)

Well a typical motherboard has only 2 or 3 USB controllers (reaching a
total of 6 ports). So you would need some 5 PCI USB controllers to get
those 12 "dedicated ports". ;-)
USB is not really meant for these power ratings...

>> > drives and I prefer using Seagate drives inside.
>>
>> Seagate gets rather hot; Samsung is a lot better in that respect.
> > I have a Sarotech Hardbox enclosure for 3.5"
>
> That's what I'm saying, Seagate is hot! But seriously,
> fanless enclosures are a problem with any drive.

With a 2,5" Samsung drive you won't have any problems with heat; these
drives do 0,6W; very power-efficient i would say.

> Hmm, Samsung 3,5" drives are rather cheap these days,
> look like a bargain to me. I remember they were regarded
> as a bit slow, but stable some years ago, wonder if that
> is still true...

The Samsung T166 500GB drive not only has the highest GB-per-euro/dollar
ratio but is also the fastest drive in terms of Sequential Transfer Rate
(STR); beating even the WD Raptor; though i have to say random I/O
performance is much more important than STR.

- Veronica



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