All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 12 posts ] 
Author Message
 Post subject: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM007)
PostPosted: November 17th, 2017, 13:57 
Offline

Joined: October 18th, 2011, 17:17
Posts: 2
Location: Finland
Hello everybody,

we have normally good success rate with hard drives, but these Seagate Mobile HDDs are making us scratch our heads (ST1000LM035 and ST2000LM007). We have nice tools from hddsurgery, years of experience with fixing faulty heads in hard drives but still these Mobile HDD-drives have proven to be highly problematic (we have just been practicing with our own drives when it comes to Mobile HDDs, not ready to handle customers' drives just yet).

Have you guys had success with these drives? Are we missing something? Are these drives really picky when it comes to spare parts (if yes, what info should definitely match when choosing a donor drive)? Is there something "special" about these drives, some detail we might be missing?

Please share your experiences with these drives, for some reason we have found these really problematic and would like to hear if others have had better success with these.


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 17th, 2017, 18:41 
Offline
User avatar

Joined: August 9th, 2007, 8:40
Posts: 789
Location: United Kingdom
In my opinion, The drives are not fit for purpose. From what I understand they use shingled magnetic recording which is not designed for normal data storage. We have seen the drives used for and marketed as normal data storage and they fail dismally. Seagate should be ashamed of these drives.

They are basically archive drives

_________________
If you can keep your head when all about you are losing theirs, you probably don't fully understand the situation. ... Mr Kipling

https://www.mjm.co.uk/


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 17th, 2017, 18:54 
Offline
User avatar

Joined: September 29th, 2005, 12:02
Posts: 3561
Location: Chicago
all modern drives are shingled

What does "highly problematic" mean in your opinion?

_________________
SAN, NAS, RAID, Server, and HDD Data Recovery.


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 18th, 2017, 7:09 
Offline
User avatar

Joined: March 6th, 2010, 3:46
Posts: 601
Location: Kolding | Denmark
Besides from being very poor build, platters made of butter, locked firmware and high failure rates they are normal "Shitgate"
HSA compatibility is not an issue "yet".

_________________
Digitalsupport Data Recovery
https://digitalsupport.dk


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 18th, 2017, 13:57 
Offline

Joined: November 29th, 2006, 10:08
Posts: 7843
Location: UK
digisupport wrote:
Besides from being very poor build, platters made of butter, locked firmware and high failure rates they are normal "Shitgate"
HSA compatibility is not an issue "yet".


Totally agree!

_________________
PC Image Data Recovery
http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 18th, 2017, 16:24 
Offline
User avatar

Joined: August 9th, 2007, 8:40
Posts: 789
Location: United Kingdom
I have seen problems with brand new Seagate drives that use shingled recording. One when writing about 20 million files to an 8tb. That started fine at over 100 mb /sec then gradually slowed down to a crawl. Ended up pulling the drive and replacing with a non Seagate drive which ran at normal speeds throughout.

I have avoided all Seagate drives that are shingled.

Doomer, do the Seagate use any form of different translation to take smr into account?

https://en.m.wikipedia.org/wiki/Shingle ... _recording

_________________
If you can keep your head when all about you are losing theirs, you probably don't fully understand the situation. ... Mr Kipling

https://www.mjm.co.uk/


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 19th, 2017, 1:03 
Offline
User avatar

Joined: September 29th, 2005, 12:02
Posts: 3561
Location: Chicago
scratchy wrote:
Doomer, do the Seagate use any form of different translation to take smr into account?

Yes and not only Seagates

_________________
SAN, NAS, RAID, Server, and HDD Data Recovery.


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 20th, 2017, 8:50 
Offline
User avatar

Joined: August 9th, 2007, 8:40
Posts: 789
Location: United Kingdom
ok, thanks Doomer,
Has it changed much since the first archive and backup drives. They are the drives that I have seen with most problems. Is media cache used during track rewriting ?

Or how does it work ?

_________________
If you can keep your head when all about you are losing theirs, you probably don't fully understand the situation. ... Mr Kipling

https://www.mjm.co.uk/


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 20th, 2017, 10:52 
Offline
User avatar

Joined: September 29th, 2005, 12:02
Posts: 3561
Location: Chicago
scratchy wrote:
ok, thanks Doomer,
Has it changed much since the first archive and backup drives. They are the drives that I have seen with most problems. Is media cache used during track rewriting ?

Rosewoods seem to be better in performance comparing to Lamarrs (the ones you were referring to) although MC is still used for bands grouping and writing
WDs on the other hand using completely different approach on shingled drives and it has its up and down sides. The worst down side being a chance to lose all your data in a blink of an eye, had two drives like this already.

_________________
SAN, NAS, RAID, Server, and HDD Data Recovery.


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: November 30th, 2017, 19:13 
Offline

Joined: October 3rd, 2005, 0:40
Posts: 4311
Location: Hungary
does wd happen to use a 'flash' style translator?

_________________
Adatmentés - Data recovery


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: December 1st, 2017, 0:14 
Offline
User avatar

Joined: September 29th, 2005, 12:02
Posts: 3561
Location: Chicago
pepe wrote:
does wd happen to use a 'flash' style translator?

yes

_________________
SAN, NAS, RAID, Server, and HDD Data Recovery.


Top
 Profile  
 
 Post subject: Re: Problematic Seagate Mobile HDD (ST1000LM035 and ST2000LM
PostPosted: December 1st, 2017, 3:43 
Offline

Joined: October 3rd, 2005, 0:40
Posts: 4311
Location: Hungary
wise...

until it gets corrupted.

_________________
Adatmentés - Data recovery


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 49 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group