A place to post photos of data recovery disasters and to discuss unusual data recovery cases.
lcoughey
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Posts: 997 Joined: Thu Jan 08, 2015 7:23 pmLocation: Ontario, Canada
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by lcoughey Wed Jul 31, 2019 1:03 pm
A place where we can share confirmed cases where we can swap platters individually without needing to be 100% accurate about platter alignment. Please post below any confirmed cases you have and I will update my list.
Seagate
Rosewood - ST2000LM027 (2 platters, 4 heads)
Pharoah (7200.12) - ST31000528AS (2 platters, 4 heads)
V9 - ST3000DM003 (3 platters, 6 heads)
Seagate ST2000LM007 - 2 platters/4 heads - 99.9999% of sectors recovered
Seagate ST31500341AS - 4 platters/8 heads - 95.14% of files recovered
Brinks (7200.11) - ST31000333AS (3 platters, 6 heads)
Grenada - ST2000DM001 (2 platters, 4 heads)
Western Digital
Shrek LT - WD20NMVW-59EDZS7 (4 platters, 8 heads)
Mariner - WD5000BEVT-22A0RT0 (2 platters, 4 heads)
FBLite - WD5000BMVW-11AJGS1 (2 platters, 4 heads)
Firebird - WD10JMVW-11S5XS0 (2 platters, 4 heads)
DragFly1 - WD10EADS-65M2B0 (2 platters, 4 heads)
Zephyr - WD5000BMVW-11AMCS2 - Platters were not 100% aligned and i got all the data from this drive
Big Bear - WD10SPCX-24HWST1 - (2 platters, 4 heads) - No alignment needed.
Samsung
ST1000LM024/HM-M101MBB (2 platters, 4 heads)
M9T - ST2000LM003 (3 platters, 6 heads)
Toshiba
Toshiba MK6021GAS - 2 platters/4 heads - 99.9999% of sectors recovered (confirmed by another user)
Toshiba MQ01UBD100 - moved around the top platter and it works fine
Hitachi
Hitachi HDT725032VLAT80 - 2 platters/4 heads - 99% of files recovered
Hitachi HDT547564A9E384 - 2 platters/4 heads - All surface reading with intentionally misaligned platters
Tried with Poor Results
Seagate ST3320820AS - 2 platters/4 heads - 49.1397 of sectors recovered
Seagate (Samsung) ST750LM022 - 2 platters / 4 heads - quite precise platter alignment by marker on the edge, different headsets are reading with errors, speed 4-7kB/s, not recommended
Hitachi HCS5C1010CLA382 - 2 platters/4 heads - 58.359% of sectors recovered
Hitachi HDT725050VLAT80 - 3 platters/6 heads - 34.75% of sectors recovered
pclab
Official Data Recovery Lab Representative
Posts: 72 Joined: Thu Jan 29, 2015 4:21 pm
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by pclab Thu Aug 01, 2019 1:13 pm
Great Topic.
lcoughey
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Posts: 997 Joined: Thu Jan 08, 2015 7:23 pmLocation: Ontario, Canada
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by lcoughey Thu Aug 01, 2019 3:15 pm
pclab wrote: ↑ Thu Aug 01, 2019 1:13 pm
Great Topic.
I'm waiting for my swapping tool to arrive!
It will only be great if others contribute.
pclab
Official Data Recovery Lab Representative
Posts: 72 Joined: Thu Jan 29, 2015 4:21 pm
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by pclab Thu Aug 01, 2019 5:24 pm
That's why I need my tool to arrive and do some testing as well.
fzabkar
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Posts: 126 Joined: Sun Jun 30, 2019 2:12 am
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by fzabkar Sun Aug 04, 2019 9:43 am
Does anyone actually understand why platters need to be aligned with respect to each other?
pclab
Official Data Recovery Lab Representative
Posts: 72 Joined: Thu Jan 29, 2015 4:21 pm
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by pclab Fri Aug 09, 2019 10:06 am
My tool have arrived. After my vacations I will do some testing!
pclab
Official Data Recovery Lab Representative
Posts: 72 Joined: Thu Jan 29, 2015 4:21 pm
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by pclab Tue Nov 26, 2019 6:39 pm
Tested a Mariner and works fine.
ddrecovery
Official Data Recovery Lab Representative
Posts: 65 Joined: Thu Jun 27, 2019 5:13 pm
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by ddrecovery Tue Nov 26, 2019 8:14 pm
pclab wrote: ↑ Tue Nov 26, 2019 6:39 pm
Tested a Mariner and works fine.
WDC WD5000BEVT-22A0RT0
2 Platters
4 Heads
How 'misaligned' were the platters?
pclab
Official Data Recovery Lab Representative
Posts: 72 Joined: Thu Jan 29, 2015 4:21 pm
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by pclab Wed Nov 27, 2019 8:28 am
ddrecovery wrote: ↑ Tue Nov 26, 2019 8:14 pm pclab wrote: ↑ Tue Nov 26, 2019 6:39 pm
Tested a Mariner and works fine.
WDC WD5000BEVT-22A0RT0
2 Platters
4 Heads
How 'misaligned' were the platters?
They were both removed to search for missing head sliders and nothing was done to try to align them back. Remove and put again. So I think pretty "misaligned" hehehe
ddrecovery
Official Data Recovery Lab Representative
Posts: 65 Joined: Thu Jun 27, 2019 5:13 pm
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by ddrecovery Wed Nov 27, 2019 2:38 pm
Good to know. Thanks for sharing.
