Two adjacent HDD

  • Thread starter Thread starter Richard
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Richard

If got a Packard Bell PC, tower case.

Is it okay to fit two HDD one above the other in the bay in my tower?

IOW, will I have a HDD overheating problem?

I've just one fan, that's on the PSU. Also of course a fan on the CPU.

TIA.

Rich.
 
If got a Packard Bell PC, tower case.
Is it okay to fit two HDD one above the other in the bay in my tower?
IOW, will I have a HDD overheating problem?

Depends on which drives you are talking about and the airflow over them.
I've just one fan, that's on the PSU. Also of course a fan on the CPU.

It can be fine with say Samsung hard drives and usually not with say Barracudas.
 
Rod said:
Depends on which drives you are talking about and the airflow over
them.


It can be fine with say Samsung hard drives and usually not with say
Barracudas.

There is not really much airflow by these, I think conduction is what is
dissipating the heat. Drives mount in a sort of cage or box that
consists of four 3.5" bays, that affixes onto the main frame of the
tower..

Like:
| |
_________________________| |
|_________________________| |
|_________________________| |
|_______FUJITSU___________| |
|______W DIG HDD_________| |
| |
| |
| |

Top one is Fujitsu, bottom Western Digital "Caviar".

I've not seen any general advice that says don't put two HDDs adjacent
in drive bays. I'd like to think if a HDD got too hot it would shut
itself down.
 
There is not really much airflow by these, I think conduction is what is
dissipating the heat. Drives mount in a sort of cage or box that
consists of four 3.5" bays, that affixes onto the main frame of the
tower..

Like:
| |
_________________________| |
|_________________________| |
|_________________________| |
|_______FUJITSU___________| |
|______W DIG HDD_________| |
| |
| |
| |

Top one is Fujitsu, bottom Western Digital "Caviar".

I've not seen any general advice that says don't put two HDDs adjacent
in drive bays. I'd like to think if a HDD got too hot it would shut
itself down.

Don't count on it! The impaired one is right: some drives need airflow
when they're mounted that way. I've seen drives get too hot to touch
just because the case was left open and the rear fans sucked air in
through the side rather than through the front and past the drives.
The same drives barely got warm with the case closed.

Josh
 
Previously Richard said:
Rod said:
[...]
There is not really much airflow by these, I think conduction is what is
dissipating the heat. Drives mount in a sort of cage or box that
consists of four 3.5" bays, that affixes onto the main frame of the
tower..
Like:
| |
_________________________| |
|_________________________| |
|_________________________| |
|_______FUJITSU___________| |
|______W DIG HDD_________| |
| |
| |
| |
Top one is Fujitsu, bottom Western Digital "Caviar".
I've not seen any general advice that says don't put two HDDs adjacent
in drive bays. I'd like to think if a HDD got too hot it would shut
itself down.

Not really. At some point it will have so many mechanical failures
that it will decide it is defect. Operating HDDs in this
temperature range will significantly shorten their lifetime.

I would strongly advise to put a fan before the disks or
to mount them differently than what you plan.

Arno
 
And the cpu used also matters. That config
usually does work fine with Celerons which
dont get anything like as hot as the AMD cpus.
There is not really much airflow by these,

Yes, but it can be enough, particularly with lower
power dissipation drives like the Samsungs.

And the other big variable is the room temp.
Whats adequate with room temps that dont
ever get out of the high 20Cs is quite different
to a situation where the room temp can be
well over 40C on the hottest days.
I think conduction is what is dissipating the heat.

Yes, particularly with the Barracudas. You can trivially
prove that by running the drive loose on the desktop.
Some drives get stinking hot very quickly in that situation.
Drives mount in a sort of cage or box that consists of four
3.5" bays, that affixes onto the main frame of the tower..

Thats a very common config indeed.
Like:
| |
_________________________| |
|_________________________| |
|_________________________| |
|_______FUJITSU___________| |
|______W DIG HDD_________| |
| |
| |
| |
Top one is Fujitsu, bottom Western Digital "Caviar".

I actually run that particular config myself and it works fine.
I've not seen any general advice that says
don't put two HDDs adjacent in drive bays.

It is undesirable in the worst situation, say a pair
of Barracudas, 40C room temp etc, AMD cpu.

Which is basically why I prefer not
to use Barracudas and AMD cpus.
I'd like to think if a HDD got too hot it would shut itself down.

Fraid not.

And with most modern drives except the WDs you
can monitor the drive temp using the SMART system.

There's a couple of obvious approaches that can be
used. One is to add a case fan that does increase the
airflow over the drives, or get a new case that allows that.

The other approach is to put one of the drives
in a bay kit and put it in one of the 5" bays.
 
Like:
| |
_________________________| |
|_________________________| |
|_________________________| |
|_______FUJITSU___________| |
|______W DIG HDD_________| |
| |
| |
| |

Top one is Fujitsu, bottom Western Digital "Caviar".

Is the top on a Fujitsu MPG ? If yes, i strongly advice you to backup
it and get rid of it, for it is likely to fail (not because of this
configuration, but because it's a Fujitsu MPG)
I've not seen any general advice that says don't put two HDDs adjacent
in drive bays. I'd like to think if a HDD got too hot it would shut
itself down.

To get a HDD too hot you would need more than that.

Nick
 
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