Harddrive positioning

Hi

I have a situation, where i have two Seagate Barracuda 7200.11 1TB drives.
They are about 1½ years old and have run in an external HDD box. Here they
have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box, where they will be mounted
horizontally...

I seem to remember, that this used to represent a problem to the bearings in
the drive... Admitted, it has been some 15 years, since i heard about that
about some disc's that crashed..

Is this still a problem? Especially regarding the discs mentioned above...

I can't seem to find out, if they have fluid bearings. If so, i dont think
it should be a problem..

TIA

/Finn
--
Der er 10 slags mennesker - Dem som forstår binær og dem som ikke gør.
There are 10 kinds of people. Those who understand binary and those who
don't.
Es gibt 10 Arten von Menschen. Die, die Binär verstehen, bzw. die, die es
nicht tuhen.

Finn Stampe Mikkelsen wrote

I have a situation, where i have two Seagate Barracuda 7200.11 1TB
drives. They are about 1½ years old and have run in an external HDD
box. Here they have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box, where they will be mounted horizontally...

I seem to remember, that this used to represent a problem to the bearings in the drive...

Nope.

Admitted, it has been some 15 years, since i heard about that about some disc's that crashed..

The bearings used then were quite different to modern fluid bearings.

And there wasnt a problem 15 years ago anyway.

Is this still a problem?

It never was.

Especially regarding the discs mentioned above...

There have been some reports of those particular drives dying when used vertically.

Its not clear why that happens.

I can't seem to find out, if they have fluid bearings.

All current drives have for quite a while now.

If so, i dont think it should be a problem..

There is a problem somewhere, not clear where tho.
http://groups.google.com/group/comp....e56e76c4946b6?

Finn Stampe Mikkelsen wrote:
Hi

I have a situation, where i have two Seagate Barracuda 7200.11 1TB drives.
They are about 1? years old and have run in an external HDD box. Here they
have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box, where they will be mounted
horizontally...

I seem to remember, that this used to represent a problem to the bearings in
the drive... Admitted, it has been some 15 years, since i heard about that
about some disc's that crashed..

Is this still a problem? Especially regarding the discs mentioned above...

I can't seem to find out, if they have fluid bearings. If so, i dont think
it should be a problem..

They will have fluid bearings, it is standard now. Even with
classical bearings it is not an issue anymore, as bearing
quality has significantly imporved.

Arno

--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email:
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
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Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans

"Finn Stampe Mikkelsen" skrev i meddelelsen
...
Hi

I have a situation, where i have two Seagate Barracuda 7200.11 1TB drives.
They are about 1½ years old and have run in an external HDD box. Here they
have been mounted vertically and run as a FTP drive..


Thanks for your answers. I'm confident, that there will be no problem with
these drive, when they will be mounted horizontally...

/Finn

On Fri, 26 Mar 2010 22:38:39 +0100, "Finn Stampe Mikkelsen"
put finger to keyboard and composed:

I have a situation, where i have two Seagate Barracuda 7200.11 1TB drives.
They are about 1½ years old and have run in an external HDD box. Here they
have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box, where they will be mounted
horizontally...

Here is a thread which shows some curious results for a vertically
mounted drive:
http://forums.seagate.com/t5/Interna...-1TB/m-p/42506

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

In message "Rod Speed"
was claimed to have wrote:

Finn Stampe Mikkelsen wrote

I have a situation, where i have two Seagate Barracuda 7200.11 1TB
drives. They are about 1½ years old and have run in an external HDD
box. Here they have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box, where they will be mounted horizontally...

I seem to remember, that this used to represent a problem to the bearings in the drive...

Nope.

Admitted, it has been some 15 years, since i heard about that about some disc's that crashed..

The bearings used then were quite different to modern fluid bearings.

And there wasnt a problem 15 years ago anyway.

Bearings weren't the problem 15 years ago, however, there was a problem
with regards to changing orientation of a drive.

Specifically, in those days stepper motors were used and the tracks on
platters were laid out based on where the motor's natural stops were
located.

When you changed orientation the stops could shift slightly. It wasn't
always a problem, but occasionally it was.

These days the motors that align heads don't dictate the location of
physical tracks, but rather the opposite, so it's a complete non-issue.

DevilsPGD wrote
Rod Speed wrote
Finn Stampe Mikkelsen wrote

I have a situation, where i have two Seagate Barracuda 7200.11 1TB
drives. They are about 1½ years old and have run in an external HDD
box. Here they have been mounted vertically and run as a FTP drive..

Now, they need to be moved to another box,
where they will be mounted horizontally...

I seem to remember, that this used to represent
a problem to the bearings in the drive...

Nope.

Admitted, it has been some 15 years, since i heard
about that about some disc's that crashed..

The bearings used then were quite different to modern fluid bearings.

And there wasnt a problem 15 years ago anyway.

Bearings weren't the problem 15 years ago,

Yes they were a problem 15 years ago.

however, there was a problem with regards to changing orientation of a drive.

Specifically, in those days stepper motors were used

Nope, that was before that.

and the tracks on platters were laid out based
on where the motor's natural stops were located.

When you changed orientation the stops could shift slightly.

Nope.

It wasn't always a problem, but occasionally it was.

Nope, because those drives could do a low level format and
that needed to be done periodically due to sector jitter that
was only a problem with stepper motor head actuator drives
due to thermal effect, the exact position of the heads varied
with temperature.

These days the motors that align heads don't dictate the location of
physical tracks, but rather the opposite, so it's a complete non-issue.

Tell that to Seagate that does have a problem with vertical mounting.