Question HDD 2.5" internal construction and shock protection ?

[USAFRet]

The Windows eject (safely removing hardware) option cuts off the electrical current through USB3.0. Is this why the 2.5" HDD + USB3.0 case is parked?

Generally, it looks like ANY cutoff of power engages the parking function. Not just safely EJECT in Windows.
Reading the above quote, some drives are doing this with a mechanical spring. Others, use the momentum of the spinning drive.

 

[cloudff7ps1]

The Windows eject (safely removing hardware) option cuts off the electrical current through USB3.0?

 

[USAFRet]

The Windows eject (safely removing hardware) option cuts off the electrical current through USB3.0?

Just to be safe, always Eject.

Whether it cuts off the power or not, that would presumably send it the park command.

The exact specifics of any singular drive are probably irrelevant.
Anything made this century has some auto parking thing going on. Specific technologies of how vary, but they all do it.
(and no, I do not know what your particular drives do. Nor am I going to attempt to look it up.)

 

[USAFRet]

Anecdotally:

500GB Seagate "Laptop Thin HDD"
Manufactured 18 Oct 2016.

This is a sacrificial drive and data. Do not attempt this at home.

Lived in a corporate laptop until mid 2022.
Then kicked around in various desk drawers until Oct 2024.
No special care taken to treat it gently.

Plugged into a toaster style dock, works perfectly.

Test 1:
Full Format, copy 41GB data to it. Approx 1,500 files of various types.

Test 2:
Toss into the air approx 3 m/10 ft, allowing it to fall onto a grass surface.
Plug it into the dock, Read/Write works perfectly.

Test 3:
Carry to 20m/65.6ft via quadrotor.
Drop, and fall to same grassy surface.
Plug into the same dock, it does not appear to have survived.

 

[cloudff7ps1]

What command is sent from Windows to the 2.5" HDD + USB3.0 case you are referring to?

Does this command, regardless of the case, remain connected to the PC via the USB3.0 cable?

 

[USAFRet]

What command is sent from Windows to the 2.5" HDD + USB3.0 case you are referring to?

Does this command, regardless of the case, remain connected to the PC via the USB3.0 cable?

Did you read that linked article?
(or any of the dozens of other articles related to head parking)

There are multiple different ways a drive will auto park, or sense if/when they need to.
But, it is safe to say, ALL of them in current use do it.

 

[cloudff7ps1]

Yes, I read the articles, thank you, but none of them mention ejecting (safely removing hardware) from Windows as one of the situations that activates the parking of 2.5" HDDs + USB3.0 case. It also does not reveal how many seconds after ejection parking occurs.

 

[USAFRet]

Yes, I read the articles, thank you, but none of them mention ejecting (safely removing hardware) from Windows as one of the situations that activates the parking of 2.5" HDDs + USB3.0 case. It also does not reveal how many seconds after ejection parking occurs.

EJECT mainly means telling Windows to stop using the drive.
Once Windows tells you it is Safe to remove....just remove it. The drives autopark thing kicks in.

How to Safely Eject an External Hard Drive - SweetCare

In this guide we will show you how to safely eject your external hard drive from a Mac and PC computer. Click here to learn more!

www.sweetwater.com

https://support.microsoft.com/en-us...-windows-1ee6677d-4e6c-4359-efca-fd44b9cec369

 

[cloudff7ps1]

After ejecting in Windows, the 2.5" HDD parking is only activated if you remove the USB3.0 cable from the 2.5" HDD + USB3.0 case and the PC? If you do not remove the cable, is the parking not activated?

 

[USAFRet]

After ejecting in Windows, the 2.5" HDD parking is only activated if you remove the USB3.0 cable from the 2.5" HDD + USB3.0 case and the PC? If you do not remove the cable, is the parking not activated?

This depends on the specific drive and the specific enclosure.

No, I do NOT know the specifics of your enclosures.


But...going back to the beginning...
Your question stems from bumping that external drive, while it was on your desk. Correct?

Have you powered up the drive again and tried to read the data on it?
If not, why not?

 

[cloudff7ps1]

apparently the HDDs are good but the defects appear in the future

 

[USAFRet]

apparently the HDDs are good but the defects appear in the future

No one can predict the future.

That is why we have multiple backups.

 

[cloudff7ps1]

Does parking after ejecting windows depend on the case model and 2.5" hdd? my hdds already mentioned previously usb3.0 cases kesu 2530 and Orico 25PW1

 

[USAFRet]

Does parking after ejecting windows depend on the case model and 2.5" hdd? my hdds already mentioned previously usb3.0 cases kesu 2530 and Orico 25PW1

This depends on the specific drive and the specific enclosure.

No, I do NOT know the specifics of your enclosures.

 

[cloudff7ps1]

What specifics i search for this encosures?

 

[USAFRet]

What specifics i search for this encosures?

This is when you ask the manufacturers.

If they are not forthcoming with the info, then it is undiscoverable.

And as always, it really does not matter.

 

[cloudff7ps1]

Kesu 2530: Use JMicron JMS578 adapter chip, compatible with USB3.0 and USB2.0. The thickened data cable is wrapped in anti-interference multi-layer aluminum. Stable read and write speed, read 120M/s, write 103M/s. caching 8MB

Orico 25PW1not found processor information

 

[USAFRet]

Kesu 2530: Use JMicron JMS578 adapter chip, compatible with USB3.0 and USB2.0. The thickened data cable is wrapped in anti-interference multi-layer aluminum. Stable read and write speed, read 120M/s, write 103M/s. caching 8MB

Orico 25PW1not found processor information

I didn't mean for you to tell us what the processor chip was inside of the enclosure.
I/we do not care.

Rather...ask the manufacturer what that drive and/or enclosure procedure and timing is for 'parking'.

 

[cloudff7ps1]

Is this question more directed to the HDD manufacturer or the enclosure case manufacturer?

 

[USAFRet]

Is this question more directed to the HDD manufacturer or the enclosure case manufacturer?

Both.

 

[cloudff7ps1]

I asked WD in chat for information about these drives WD10JPVX-08JC3T5 and HGST HTS541010A99E662 and their response: Please allow me to inform you that we do not provide specific information regarding the internal hardware and configuration of our drives, including the parking procedure and timing for the read/write heads.

 

[USAFRet]

I asked WD in chat for information about these drives WD10JPVX-08JC3T5 and HGST HTS541010A99E662 and their response: Please allow me to inform you that we do not provide specific information regarding the internal hardware and configuration of our drives, including the parking procedure and timing for the read/write heads.

And that would be all the info you, or any of us out here, could get.

Asking again will get no further info.

 

[cloudff7ps1]

unfortunately I don't know any forum or engineer specialized in HDDs for me to ask

 

[USAFRet]

unfortunately I don't know any forum or engineer specialized in HDDs for me to ask

If the manufacturer is not giving up the info, no one else can get it either.

 

[cloudff7ps1]

If I don't have the time information for parked, is there any other type of protection on the 2.5" HDDs to prevent friction of the read/write heads for moderate impacts without falling to the ground?