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Platter Swap Without Alignment Issues
Posted: Wed Jul 31, 2019 1:03 pm
by lcoughey
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
Re: Platter Swap Without Alignment Issues
Posted: Thu Aug 01, 2019 1:13 pm
by pclab
Great Topic.
I'm waiting for my swapping tool to arrive!
Re: Platter Swap Without Alignment Issues
Posted: Thu Aug 01, 2019 3:15 pm
by lcoughey
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.
Re: Platter Swap Without Alignment Issues
Posted: Thu Aug 01, 2019 5:24 pm
by pclab
That's why I need my tool to arrive and do some testing as well.
Re: Platter Swap Without Alignment Issues
Posted: Sun Aug 04, 2019 9:43 am
by fzabkar
Does anyone actually understand why platters need to be aligned with respect to each other?
What is the purpose of an embedded servo if not to obviate the necessity for head-to-head alignment?
Re: Platter Swap Without Alignment Issues
Posted: Fri Aug 09, 2019 10:06 am
by pclab
My tool have arrived. After my vacations I will do some testing!
Re: Platter Swap Without Alignment Issues
Posted: Tue Nov 26, 2019 6:39 pm
by pclab
Tested a Mariner and works fine.
WDC WD5000BEVT-22A0RT0
2 Platters
4 Heads
Re: Platter Swap Without Alignment Issues
Posted: Tue Nov 26, 2019 8:14 pm
by ddrecovery
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?
Re: Platter Swap Without Alignment Issues
Posted: Wed Nov 27, 2019 8:28 am
by pclab
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
Re: Platter Swap Without Alignment Issues
Posted: Wed Nov 27, 2019 2:38 pm
by ddrecovery
Good to know. Thanks for sharing.