TRIM Command Support for WD External Drives:
https://support-en.wd.com/app/answers/detail/a_id/25185

_________________
A backup a day keeps DR away.

Yes, or make up how to build custom translator in order get access to "trim wiped" areas

_________________
Angel Data Recovery

Hi Guys ,
I had a case that was just quick formatted and voila all is gone .I do agree with Pepe and DR-Kiev a custom translator is a possibility or something else

_________________
Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com

I have searched Google. As I understood;
Trim function working as guessed in this topic. Data is there. But TRIM function tell that block has no data. It's working with blocks. Not sector's. Hdd virtually accept there is no data. I am afraid this function works when normal using in windows shift+delete also. ( couldn't tested. I don't have this type hdd in my hand now) So trim function looking for garbage data . And if there is garbage data TRIM function working. Not interested with sectors. And That data gone immideattly. So many people would loose user data in future with this function. Kinda Harakiri lol.

Another info , I have checked customers hdd with HDtune for bad sector. There was amazing speed that faster than SSD .

_________________
Sexy Womans from your town

Will join you teaching class for that, when you have figured it out

_________________
Digitalsupport Data Recovery
https://digitalsupport.dk

I'm sure Ace (and probably others) are reverse engineering a way to tell the drive's firmware that all sectors are occupied so as to make it possible to scan for deleted data again.

But, I do wonder how much manual work it will ultimately entail if the translation involves creating new shifts whenever a bad sector if added to the G-List. It'll probably entail using some sort of virtual sector translation.

It's an interesting development, but might not ultimately be a bad thing. It'll cut the PC shops completely out of the logical data recovery game on these drives.

_________________
Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company

Any development that cuts out the end user is a bad thing. Nobody owes the data recovery business a living.

_________________
A backup a day keeps DR away.

So. If MBR parts or something other parts has bad sector. TRIM function would tell to drive . Data not important. So no active partition. And game over. Data would fly over atmosphere . This function would make big headache for hdd manufacturer also. There should be a way to reconstruct drive to get data back. My guess WD will open a data recovery part soon as Seagate

_________________
Sexy Womans from your town

ISTM that TRIM should only be triggered by those events which are initiated by the user, eg file deletion, volume formatting. It wouldn't make sense for the OS to TRIM a file system which it knows to be corrupt or inconsistent.

_________________
A backup a day keeps DR away.

Stumbled on this https://support-en.wd.com/app/answers/detail/a_id/25185

_________________
Joep - http://www.disktuna.com - video & photo repair & recovery service

Good info in link

https://www.ixsystems.com/community/res ... rives.141/



List of SMR drives known to the community:

Manufacturer - Width Model No Model Name Type Notes
WD - 3.5" WD20EFAX 2TB WD Red DM-SMR (1) and (4), EFRX is CMR
WD - 3.5" WD30EFAX 3TB WD Red DM-SMR (4), EFRX is CMR
WD - 3.5" WD40EFAX 4TB WD Red DM-SMR (1) and (4), EFRX is CMR
WD - 3.5" WD60EFAX 6TB WD Red DM-SMR (1) and (4), EFRX is CMR
WD - 3.5" WD20EZAZ 2TB Blue DM-SMR (4), EZRZ is CMR
WD - 3.5" WD30EZAZ 3TB Blue DM-SMR ?, EZRZ is CMR
WD - 3.5" WD40EZAZ 4TB Blue DM-SMR ?, EZRZ is CMR
WD - 3.5" WD60EZAZ 6TB Blue DM-SMR (4), EZRZ is CMR
WD - 3.5" WD40EMAZ 4TB Elements DM-SMR (12)
WD - 3.5" WD60EMAZ 6TB Elements DM-SMR (12)
WD - 3.5" WD60EDAZ 6TB My Book DM-SMR (14)
Seagate - 3.5" ST2000DM005 2TB Barracuda DM-SMR Inferred from (8)
Seagate - 3.5" ST2000DM008 2TB Barracuda DM-SMR (2)
Seagate - 3.5" ST3000DM007 3TB Barracuda DM-SMR Inferred from (8)
Seagate - 3.5" ST4000DM004 4TB Barracuda DM-SMR (2)
Seagate - 3.5" ST5000DM003 5TB Barracuda DM-SMR 2TB platter as per (15)
Seagate - 3.5" ST6000DM003 6TB Barracuda DM-SMR Inferred from (8)
Seagate - 3.5" ST8000DM004 8TB Barracuda DM-SMR (2)
Seagate - 3.5" ST5000DM000 5TB Desktop DM-SMR (2)
Seagate - 3.5" ST5000AS0011 5TB Archive DM-SMR (3)
Seagate - 3.5" ST6000AS0002 6TB Archive v2 DM-SMR (3)
Seagate - 3.5" ST8000AS0002 8TB Archive v2 HA-SMR (3) and (10)
Seagate - 3.5" ST8000AS0003 8TB Exos (Archive v3) DM-SMR (2)
Toshiba - 3.5" HDWD240UZSVA 4TB P300 Desktop DM-SMR (11)
Toshiba - 3.5" HDWD260UZSVA 6TB P300 Desktop DM-SMR (11)
Toshiba - 3.5" DT02ABA400 4TB DT02(-V) DM-SMR (11)
Toshiba - 3.5" DT02ABA600 6TB DT02(-V) DM-SMR (11)
HGST - 3.5" DC HC600 Series 14TB, 15TB and 20TB Ultrastar HM-SMR (9)
--- --- --- ---
Toshiba - 2.5" HDWL110 1TB L200 Slim DM-SMR (11)
Toshiba - 2.5" HDWL120 2TB L200 DM-SMR (11), see also list at (18)
Toshiba - 2.5" MQ04ABF100 1TB MQ04 DM-SMR (11)
Toshiba - 2.5" MQ04ABD200 2TB MQ04 DM-SMR (11)
WD - 2.5" WD9000LPZX 900GB Blue DM-SMR (16)
WD - 2.5" WD10SPZX 1TB Blue DM-SMR (4), also as HGST Travelstar, see (20)
WD - 2.5" WD10SPWX 1TB Blue DM-SMR (16)
WD - 2.5" WD10SPSX 1TB Black DM-SMR (4)
WD - 2.5" WD20SPZX 2TB Blue DM-SMR (4)
WD - 2.5" Various Not For Resale DM-SMR List at (17)
Seagate - 2.5" ST1000LM048 1TB Barracuda DM-SMR (7), see also list at (19)
Seagate - 2.5" ST2000LM015 2TB Barracuda DM-SMR (7), see also list at (19)
Seagate - 2.5" ST3000LM024 3TB Barracuda DM-SMR (7), see also list at (19)
Seagate - 2.5" ST4000LM024 4TB Barracuda DM-SMR (7), see also list at (19)
Seagate - 2.5" ST5000LM000 5TB Barracuda DM-SMR (7), see also list at (19)

_________________
Sexy Womans from your town

if you have unlock pcb i can handle this problem