Do newer 7200 rpm HDD really need a separate cooling fan ?

Excue me for being stupid but... how does a bit of software know the
temperature of the HD? A fan or mobo needs some kind of sensor? The HD has
no sensor so how does the software know the temperature? Oops, I asked that
already!


J.


"Ken" wrote in message
...
On Tue, 08 Jul 2003 18:08:26 GMT, Butterfly Maiden
wrote:

Do newer 7200 rpm HDD really need a separate cooling fan ?

No, but they need proper airflow around them.
http://w1.857.telia.com/~u85710476/d...ple/pcvent.png
Keep the temperature under °40C.
This is a simple and good working program for temperature check.
http://private.peterlink.ru/tochinov/download.html
Temperature in Taskbar
http://w1.857.telia.com/~u85710476/d...e/hdtemp04.png
Temperature warning
http://w1.857.telia.com/~u85710476/d...e/hdtemp07.png
Configuration
http://w1.857.telia.com/~u85710476/d...e/hdtemp02.png

Excue me for being stupid but... how does a bit of software know the
temperature of the HD? A fan or mobo needs some kind of sensor? The HD has
no sensor so how does the software know the temperature? Oops, I asked
that
already!



You're excused. Most new hard disks have on board temprature sensors. Mine
does. In fact, all of mine do, except my oldest which is 3 years old.

Why did you assume they didn't have sensors?

I have a WD 120 GB HDD. Am I wasting a case fan on my HDD which might be
used better
elsewhere??

Fit fans in your case according to the following priority:
o Rear of case above the PSU
---- augments the extractive capabilities of the PSU
---- directly reduces case temperature since no PSU resistance to air flow
o Rear of case behind the CPU (if case hole available)
---- reduces the amount of hot air the CPU-cooler recirculates
---- directly reduces case temperatures
o Front intake fan port
---- ideally the fan should seal against the case surface or derated 40-60%
---- benefit is not additive to total cfm, it merely augments static
pressure
---- more static pressure means you get closer to the total exhaust fan cfm

The HD should be mounted where it can received reasonable airflow.
However, locating it immediately against an intake fan can increase noise,
so position a little further back using the slotted mounted holes in the
case.

7200rpm IDE disks are not as hot running as older 7200rpm SCSI disks,
or 10,000/15,300rpm SCSI disks - but do have basic cooling requirements.

Disks do need to be kept below their max operating temperature defined
ultimately by the magnetic media itself, unlike most other components in a
PC.
--
Dorothy Bradbury
http://homepage.ntlworld.com/dorothy...ry/panaflo.htm
(Panaflo L1A 5.99ukp including Free 1st-Class Shipping in UK)

Rear case fan, yes. Front case fan too, very good. HD fan, no. But, try to
mount it where it will have air all around it. Even if that means in a 5
1/2" bay with a kit.


--
Ed Light

Smiley :-/
MS Smiley :-\

"John Smith" wrote in message
...
I had no idea that drives came with sensors... makes me wonder why the
various HD manufacturers such as Seagate, WD, Hitachi, etc, don't actually
market this and provide some kind of temperature software with the HD or
for
download.
That would be great. We must E-mail them.
The drive tells all kinds of stuff about itself to any software that's SMART
enabled. But on some motherboards, SMART has to be enabled in the bios.


--
Ed Light

Smiley :-/
MS Smiley :-\

Butterfly Maiden wrote:

Do newer 7200 rpm HDD really need a separate cooling fan ?

I have a WD 120 GB HDD. Am I wasting a case fan on my HDD which might be
used better elsewhere??



A simple way to make sure they get some air is (if you use a rear fan) drill
some holes in the plastic cover over the drive bay for it and use that as
part of the air intake.

--

Stacey

Western Digital's WD Bench software does report the temperature for SCSI
drives.
Interestingly.I have 2 Maxtor and 1 WD drive, but the software can report
the temp only for the Maxtor drive, the WD drive has no sensor.

--
http://www.standards.com/; Howard Kaikow's web site.
------------------------------------------------
"John Smith" wrote in message
...
I had no idea that drives came with sensors... makes me wonder why the
various HD manufacturers such as Seagate, WD, Hitachi, etc, don't actually
market this and provide some kind of temperature software with the HD or
for
download.

J.


"" wrote in message
...
Excue me for being stupid but... how does a bit of software know the
temperature of the HD? A fan or mobo needs some kind of sensor? The HD
has
no sensor so how does the software know the temperature? Oops, I asked
that
already!



You're excused. Most new hard disks have on board temprature sensors.
Mine
does. In fact, all of mine do, except my oldest which is 3 years old.

Why did you assume they didn't have sensors?

I pit a Vantec fan on one of the hard drives.
Seems to have lowered drive temp about 10 degrees C.

--
http://www.standards.com/; Howard Kaikow's web site.
------------------------------------------------
"Ed Light" wrote in message
...
Rear case fan, yes. Front case fan too, very good. HD fan, no. But, try to
mount it where it will have air all around it. Even if that means in a 5
1/2" bay with a kit.


--
Ed Light

Smiley :-/
MS Smiley :-\

On Tue, 8 Jul 2003 20:13:55 +0100, "John Smith"
wrote:

Excue me for being stupid but... how does a bit of software know the
temperature of the HD? A fan or mobo needs some kind of sensor?
The HD has no sensor so how does the software know the
temperature? Oops, I asked that already!

Modern HD:s HAVE a temperature sensor.

probably. My hds do 40-55C regularly and I have one side of the case open

"Butterfly Maiden" wrote in message
...
Do newer 7200 rpm HDD really need a separate cooling fan ?

I have a WD 120 GB HDD. Am I wasting a case fan on my HDD which might be
used better
elsewhere??

TIA.