HD temp question

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Per
Posts: 12
Joined: 03 Apr 2007, 14:03

HD temp question

Post by Per » 03 Apr 2007, 15:58

Hi!

I have measured the hd temperature using hddtemp utility and it seems to be rather high (almost 50C).

Is this a concern? It is lower that segates max temp (60C) but it may reduce the hd life span.

/Per

lelle
Posts: 69
Joined: 02 Jan 2007, 20:25
Location: Stockholm, Sweden

Re: HD temp question

Post by lelle » 03 Apr 2007, 16:20

Per wrote:Hi!

I have measured the hd temperature using hddtemp utility and it seems to be rather high (almost 50C).

Is this a concern? It is lower that segates max temp (60C) but it may reduce the hd life span.

/Per
Hi Per,

Good cooling is always essential, but I wouldn't worry about the temp -- my hd temp varies between 46-49 C. This is well below the specifications for the Seagate Barracuda 7200.10 drive. You can find more info here: http://www.seagate.com/docs/pdf/datashe ... 200_10.pdf

Clive
Posts: 144
Joined: 07 Mar 2007, 07:15

Post by Clive » 04 Apr 2007, 03:34

My HD temp is normally between 47-49C which does feel warm -

http://www.cashaw.co.uk/phpsysinfo/index.php

I have my Bubba stood vertically in a cool ventilated room (actually my closet) so perhaps all that is lacking is air-movement. When I get round to it I was going to investigate mounting it on a large heat-sink to see if that made any effect. Although as Lelle says, it is well within the operational specifications of the hard disk. I do wonder what longterm effect this will have on the Bubba mainboard though.....

johannes
Posts: 1467
Joined: 31 Dec 2006, 07:12
Location: Sweden
Contact:

Post by johannes » 04 Apr 2007, 04:03

I don't think you need to worry about temperatures around 50 degrees. However, higher temperatures always affects durability. As a rule of thumb when it comes to electronics, lowering the temperature with 10 degrees C doubles lifetime.

Some facts for the curious: :)

Regarding the Bubba main board, the lowest specified parts is the Lithium battery cell (keeping the time at power-down) is specified for a maximum operating temperature at 70 degrees C. High temperatures doesn't affect the battery capacity or life-time.

The only other thing to consider is the large electrolytic capacitors for the power supply (located near the power supply inlet, on the bottom side of the circuit board), wich are specified for a max temperature of 105 degrees C. The expected life time at 55 degrees is something like ten years. Since they contain fluid that dries out over time, these are always the most sensitive parts of the board.

Regarding the disk it's harder to calculate life expectancies, but they do give a five year warranty, and specify maximum temperature to 65 degrees C, wich would indicate that running at 50 degress is fairly safe.
EDIT: Seagate specifies a maximum operating temp to 60, not 65. Sorry. Still, no worries.
Last edited by johannes on 04 Apr 2007, 04:30, edited 1 time in total.
/Johannes (Excito co-founder a long time ago, but now I'm just Johannes)

Clive
Posts: 144
Joined: 07 Mar 2007, 07:15

Post by Clive » 04 Apr 2007, 04:24

Thanks for the information Johanne and putting my mind at rest !

Per
Posts: 12
Joined: 03 Apr 2007, 14:03

Post by Per » 04 Apr 2007, 15:29

Thanks for the information.

Let's hope that this temperature won't reduce the lifespan of the disk.

Anyway, to ease my mind, I install smartmontools to keep an eye on the disk for me.

/Per

dsp76
Posts: 76
Joined: 15 Apr 2007, 14:18

Post by dsp76 » 29 Apr 2007, 03:25

Hi Per,
how did you install it? I downloaded the .deb package, but run in several dependencies. Did you manually correct them? Or did you add another source to the sources list?

dsp

Per
Posts: 12
Joined: 03 Apr 2007, 14:03

Post by Per » 29 Apr 2007, 03:34

Hi!

Use apt-get and dependencies will be resolved:

apt-get install smartmontools

/Per

dsp76
Posts: 76
Joined: 15 Apr 2007, 14:18

Post by dsp76 » 29 Apr 2007, 03:55

Hi Per

Code: Select all

The following packages have unmet dependencies:
  smartmontools: Depends: libc6 (>= 2.3.5-1) but 2.3.2.ds1-22sarge4 is to be installed
                 Depends: libgcc1 (>= 1:4.1.1-12) but 1:3.4.3-13sarge1 is to be installed
                 Depends: libstdc++6 (>= 4.1.1-12) but it is not installable
                 Depends: lsb-base (>= 3.0-10) but it is not installable
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
... so you might have added other sources?
dsp

Per
Posts: 12
Joined: 03 Apr 2007, 14:03

Post by Per » 29 Apr 2007, 04:01

Hi!

Check that you have the correct source list:

deb http://ftp.se.debian.org/debian/ sarge main
deb http://security.debian.org/ sarge/updates main
deb http://ftp.se.debian.org/debian/ sarge non-free


Bubba is built on sarge so you can't use debian default.

dsp76
Posts: 76
Joined: 15 Apr 2007, 14:18

Post by dsp76 » 29 Apr 2007, 14:35

Hi,
okay, that worked - thanks a lot!

Its a Hitachi HDS725050KLAT80, I needed to switch SMART on with

Code: Select all

sudo smartctl -s on /dev/hda
Now I need to find out, how to set up the daemon, so it can warn me in case anything goes wrong...

dsp

Per
Posts: 12
Joined: 03 Apr 2007, 14:03

Post by Per » 29 Apr 2007, 15:50

Hi!

You probably already have smartd running after the install. Check:

ps -e | grep smartd

If it isen't started use

/etc/init.d/smartmontools start

Check that /etc/default/smartmontools specify that smartd should start. If it is smartd will start after reboot.

Configuration of smartd you find in /etc/smartd.conf

Also goto http://smartmontools.sourceforge.net for more information.

/Per

dsp76
Posts: 76
Joined: 15 Apr 2007, 14:18

Post by dsp76 » 29 Apr 2007, 16:07

Perfect, thanks...

I set the smartd.conf settings to:

Code: Select all

/dev/hda -H -m myemail@adress.de
Hopefully it will never send an email :-)

dsp

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