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From: Rod Speed on 26 Feb 2010 11:30
David Brown wrote
> Man-wai Chang to The Door (24000bps) wrote

>> Found such a toy in local computer shopping arcade.

>> Is it gonna kill both hard disks by heat?

> 2.5 inch disks usually generate a lot less heat than a 3.5 inch disk,
> so my guess would be no.

> I'm considering one of these, or perhaps 4x 2.5" in a 5.25" bay. Two
> 2.5 inch 500 GB disks will be around twice the price of a single 3.5"
> 1 TB disk, but as far as I can see they will be quieter and lower
> power (even with two of them), and faster (using raid0).

My Samsung 3.5" 1.5TB drives are completely silent, you have to
listen very carefuly to see if they have spun up in a USB docking station.

MUCH better value and speed too.


From: Flasherly on 26 Feb 2010 12:24
On Feb 26, 11:30 am, "Rod Speed" <rod.speed....(a)gmail.com> wrote:
> David Brown wrote
>
> > Man-wai Chang to The Door (24000bps) wrote
> >> Found such a toy in local computer shopping arcade.
> >> Is it gonna kill both hard disks by heat?
> > 2.5 inch disks usually generate a lot less heat than a 3.5 inch disk,
> > so my guess would be no.
> > I'm considering one of these, or perhaps 4x 2.5" in a 5.25" bay. Two
> > 2.5 inch 500 GB disks will be around twice the price of a single 3.5"
> > 1 TB disk, but as far as I can see they will be quieter and lower
> > power (even with two of them), and faster (using raid0).
>
> My Samsung 3.5" 1.5TB drives are completely silent, you have to
> listen very carefuly to see if they have spun up in a USB docking station.
>
> MUCH better value and speed too.

I like mine too, Samsung ecogreen 5400 1T. Value is median, quality
and reviews for Samsung are higher up to 1.5T. Above, 2T, only
Hitachi is going for the value -- 2T $134 rebated to a $110 1.5T
Samsung. 2T for pushing $200 with the rest will have to wait for
better values. May do another one after awhile, 1.5T WD's audiovisual
HD might be a choice, (possibly then a Hitachi after WD), although
with WD and XP that involves getting into WD's new 4K sector
alignment. Win7 is already implemented. For XP, not too major, more
difficult to actually understand, although WD does offer a couple easy
ways of going at it with, either their software or a XP-compatibility
jumperpin on the HD -- unless someone were regular type in server fare
with command line utilities (*nix) for adjusting large-drive
alignments. 4K sectors look to be the writing on the wall past 2T -
though 4K may not be the standard sector size until 2013-14.
From: David Brown on 27 Feb 2010 06:45
Rod Speed wrote:
> David Brown wrote
>> Man-wai Chang to The Door (24000bps) wrote
>
>>> Found such a toy in local computer shopping arcade.
>
>>> Is it gonna kill both hard disks by heat?
>
>> 2.5 inch disks usually generate a lot less heat than a 3.5 inch disk,
>> so my guess would be no.
>
>> I'm considering one of these, or perhaps 4x 2.5" in a 5.25" bay. Two
>> 2.5 inch 500 GB disks will be around twice the price of a single 3.5"
>> 1 TB disk, but as far as I can see they will be quieter and lower
>> power (even with two of them), and faster (using raid0).
>
> My Samsung 3.5" 1.5TB drives are completely silent, you have to
> listen very carefuly to see if they have spun up in a USB docking station.
>

I haven't paid much attention to disk drive noise or power requirements
before, but I'm planning on having several drives on a new machine (to
play around with raid) and so the total drive noise is (perhaps) going
to be noticeable. It's useful to hear people's experiences with modern
drives - "completely silent" is more helpful than "2.5 Bel" on a web
page of drive specifications.

> MUCH better value and speed too.
>

There's no argument about value.

I had a look at some details of drives on Samsung's website, and was
somewhat surprised by some of the specification details. I had thought
that the seek time for 2.5" drives would be lower than for 3.5" drives
since the maximum movement distance is smaller. Apparently that's not
the case. And the disk-to-buffer transfer speed is almost twice as fast
for the 3.5" disks. It also seems that there is little difference in
the noise, although the the 3.5" disks take more than twice the power of
the 2.5" disks.

All in all, I think I'll be going for 3.5" disks. While 2.5" have the
potential for being faster in that you can fit more into a given space
and run them in parallel, it's just not going to be worth the money.


From: Man-wai Chang to The Door (24000bps) on 27 Feb 2010 09:17
> All in all, I think I'll be going for 3.5" disks. While 2.5" have the
> potential for being faster in that you can fit more into a given space
> and run them in parallel, it's just not going to be worth the money.

I guess we need to wait for 2.5-inch drives to get mass production.

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From: Rod Speed on 27 Feb 2010 13:00
David Brown wrote
> Rod Speed wrote
>> David Brown wrote
>>> Man-wai Chang to The Door (24000bps) wrote

>>>> Found such a toy in local computer shopping arcade.

>>>> Is it gonna kill both hard disks by heat?

>>> 2.5 inch disks usually generate a lot less heat than a 3.5 inch disk, so my guess would be no.

>>> I'm considering one of these, or perhaps 4x 2.5" in a 5.25" bay. Two 2.5 inch 500 GB disks will be around twice the
>>> price of a single
>>> 3.5" 1 TB disk, but as far as I can see they will be quieter and
>>> lower power (even with two of them), and faster (using raid0).

>> My Samsung 3.5" 1.5TB drives are completely silent, you have to
>> listen very carefuly to see if they have spun up in a USB docking station.

> I haven't paid much attention to disk drive noise or power
> requirements before, but I'm planning on having several drives on a
> new machine (to play around with raid) and so the total drive noise
> is (perhaps) going to be noticeable. It's useful to hear people's
> experiences with modern drives - "completely silent" is more helpful
> than "2.5 Bel" on a web page of drive specifications.

>> MUCH better value and speed too.

> There's no argument about value.

> I had a look at some details of drives on Samsung's website, and was
> somewhat surprised by some of the specification details. I had
> thought that the seek time for 2.5" drives would be lower than for
> 3.5" drives since the maximum movement distance is smaller. Apparently that's not the case. And the disk-to-buffer
> transfer
> speed is almost twice as fast for the 3.5" disks. It also seems that
> there is little difference in the noise, although the the 3.5" disks
> take more than twice the power of the 2.5" disks.

> All in all, I think I'll be going for 3.5" disks.

Yeah, I do, mainly because they are so much cheaper.

I do buy quite a few, mainly they are for overflow from the PVR.

> While 2.5" have the potential for being faster

I dont care about the speed, what I need is best $/TB and nice and
quiet and dont get warm. I use the greens for the PVR overflow.

> in that you can fit more into a given space and run them in parallel, it's just not going to be worth the money.

Yep, and more hassle than a single physical 1.5TB drive too.

I put them in USB/esata docking stations.


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