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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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About DONOR DRIVE criteria for heads assembly

September 29th, 2015, 9:32

Hello,

I have 2 HDD drives (WD20NMVW-11EDZS2 and WD20NMVW-11AV3S2) bought from the same shop in the same periode.

The have the Same DCM (except 1 character) and a close date but only the first part of the MDL.

Can the 2 drives have a compatible heads assembly?

What is the reliability of information about donor drive criteria on DonorDrive.com and other websites? are theses creteria a MUST in order to have a compatible heads assembly?

kind regards,
Attachments
WD20NMVW-11EDZS2.jpg
WD20NMVW-11AV3S2.jpg

Re: About DONOR DRIVE criteria for heads assembly

September 29th, 2015, 11:53

The blue drive is rather fresh, e.g. I think it could happen that we haven't got our hands on it yet. Probably many others here as well, so you can make an experiment.


sosrecup wrote:a close date

These are the recent models, so even with a few days delta in production dates heads may be different.

Re: About DONOR DRIVE criteria for heads assembly

September 29th, 2015, 12:19

As Dmitry implied, someone has to be the first to try. So, swap them out and let us know your result.

Re: About DONOR DRIVE criteria for heads assembly

September 29th, 2015, 12:54

The blue one is the donor.

Even if the HDD Model is not the same or as recommendation is some websites like donordrives:

WD20NMVW-11EDZS2 and WD20NMVW-11AV3S2

anyway, I'll try to swap to see the result.

Re: About DONOR DRIVE criteria for heads assembly

September 29th, 2015, 13:00

sosrecup,

WD20NMVW-11AV3S2 - Shrek LT family
WD20NMVW-11EDZS2 - ?????

Image from the PCB show.

Re: About DONOR DRIVE criteria for heads assembly

September 30th, 2015, 4:45

Hello,

WD20NMVW-11EDZS2 is Shrek LT family too.

The PCB code on the working hdd (WD20NMVW-11EDZS2) is 2060-771961-001 rev B
The PCB code on the non-working hdd (WD20NMVW-11AV3S2) is 2060-771961-001 rev A


Kind regards,
Attachments
non-working-hdd-WD20NMVW-11AV3S2.jpg
working-WD20NMVW-11EDZS2.jpg

Re: About DONOR DRIVE criteria for heads assembly

September 30th, 2015, 5:19

I have swapped these and they work. If preamp vendor and rev matches, you should be good to go.
However, I'm a little concerned that your patient has a small dent of the lid, near where the platter surfaces begin...

Re: About DONOR DRIVE criteria for heads assembly

October 9th, 2015, 5:22

I confirm,

I swapped the heads between these HDDs, and it worked for me.

Re: About DONOR DRIVE criteria for heads assembly

October 9th, 2015, 5:40

thanks for sharing.

These drives are not encrypted anymore, am wondering whether WD has change the policy ? anyone have any idea on it ?

Re: About DONOR DRIVE criteria for heads assembly

October 10th, 2015, 8:09

chinopk,

The new version of PC3000 can access data on WD drives even if they are encrypted.

Regards,
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