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Twinmos SATA SSDs wants low level format every four month

http://forum.hddguru.com/viewtopic.php?f=10&t=46075

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Twinmos SATA SSDs wants low level format every four month

Posted: June 9th, 2026, 7:13
by isameral
Hello,

I work as an IT technician at a mid-sized state hospital. About three years ago, we replaced all HDDs with SSDs across our organization. Our systems range from Intel 3rd-generation to 9th-generation platforms, all running Windows 10 64-bit.

Initially, we purchased a number of 128GB TwinMOS SSDs, and they performed very well. Based on that experience, we later purchased over 150 units of the same brand in the 256GB capacity.

Interestingly, the 128GB models have been completely trouble-free, but we are experiencing a very unusual issue with the 256GB drives.

After installation, the SSDs perform normally. However, after approximately four months of use, their performance degrades dramatically—often becoming slower than the HDDs they replaced. The issue affects many systems with different hardware configurations, so I doubt it is related to chipset drivers or a specific platform. I also install all drivers manually rather than relying on Windows Update.

The drives do not show any signs of failure: no bad sectors, no file corruption, and SMART data appears normal. The only symptom is extremely poor performance.

The strange part is that if I perform a low-level wipe/secure erase using tools such as MiniTool Partition Wizard or KillDisk, the SSD immediately returns to its original performance level. After some time, however, the same slowdown eventually reappears.

Managing this issue on more than 100 computers has become a nightmare, and I am running out of ideas.

Has anyone encountered a similar problem with SSDs? Could this be related to firmware, TRIM, garbage collection, overprovisioning, or some other SSD-specific issue?

Any suggestions would be greatly appreciated.

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 7:47
by Lukas
Up to what capacity do the drives perform better?
Generally, the description indicates memory usage.
SMART or regular tests likely won't reveal anything due to the way SSDs work; the most reliable way would be to completely fill the drive and then verify.

We also don't know the exact memory model used in these drives (apart from the TLC 3D NAND type, the exact ID is unknown), nor the controller (the manufacturer lists SMI, but the question is which version).

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 8:47
by isameral
I try different partition sizes but I am usually leaving %10 empty for over provizioning.
In the attached file 10 warnings, most recent: \Device\RaidPort0 aygıtına sıfırla komutu verildi. (storahci; ID: 129)
Turkish part can be translated as The reset command was given to the \Device\RaidPort0 device.

But it is irrelevant. Because some computers have that and some others show no warning/error but slows down anyway.

Do you recommend any method to do "completely fill the drive and then verify."
When drives slows down, they are using 100% HDD in the task manager. I checked multiple ones with chkdsk /f /r boot time chkdsk. I couldn't find any bad sector or a visible problem in any of them.

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 9:11
by isameral
I find a way to fill all the sectors.
It is bootable Minitool.

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 13:13
by fzabkar
Is TRIM enabled in the OS?

Does your SSD have a Silicon Motion controller?

Tip: Using CrystalDiskInfo to identify controller & NAND:

https://www.hddoracle.com/viewtopic.php?p=22539#p22539

Check when your drive was last TRIM-ed:

https://support.microsoft.com/en-au/windows/defragment-optimize-your-data-drives-in-windows-54d4fed1-c96e-46db-b843-8c6b34bd27a4

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 15:26
by isameral
Yes one of the things I tryed was doing windows defrag/trim which has no effect. Also changing sata cables has no effect too. Nothing but low level format recovers its speed.

How can I find its controller brand/model?

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 15:31
by fzabkar
Try a full scan with Victoria.

https://hdd.by/victoria/

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 15:53
by isameral
Smart Read Data did not show me the controller model but when I googled firmware version "SN15330" I found this:
https://smarthdd.com/database/TwinMOS-SSD/SN15330/
If it is the correct ssd model, controller is Maxiotek.
----------------------------------------------------------------------------
CrystalDiskInfo 9.2.3 (C) 2008-2024 hiyohiyo
Crystal Dew World: https://crystalmark.info/
----------------------------------------------------------------------------

OS : Windows 10 Pro 22H2 [10.0 Build 19045] (x64)
Date : 2026/06/09 22:44:42

-- Controller Map ----------------------------------------------------------
+ Standart SATA AHCI Denetleyici [ATA]
- TwinMOS SSD
- Microsoft Depolama Alanları Denetleyicisi [SCSI]

-- Disk List ---------------------------------------------------------------
(01) TwinMOS SSD : 256,0 GB [0/0/0, pd1] - ma

----------------------------------------------------------------------------
(01) TwinMOS SSD
----------------------------------------------------------------------------
Model : TwinMOS SSD
Firmware : SN15330
Serial Number : H2UBHL310252097
Disk Size : 256,0 GB (8,4/137,4/256,0/256,0)
Buffer Size : Unknown
Queue Depth : 32
# of Sectors : 500118192
Rotation Rate : ---- (SSD)
Interface : Serial ATA
Major Version : ACS-4
Minor Version : ----
Transfer Mode : SATA/600 | SATA/600
Power On Hours : 6262 hours
Power On Count : 225 count
Host Reads : 3868 GB
Host Writes : 1837 GB
Temperature : 31 C (87 F)
Health Status : Good
Features : S.M.A.R.T., NCQ, TRIM, GPL
APM Level : ----
AAM Level : ----
Drive Letter : C:

-- S.M.A.R.T. --------------------------------------------------------------
ID Cur Wor Thr RawValues(6) Attribute Name
05 100 100 _10 000000000000 Number of New Bad Block
09 100 100 __0 000000001876 Power On Hours
0C 100 100 __0 0000000000E1 Power Cycle Count
A4 100 100 __0 0009002F0024 Total Erase Count
A5 100 100 __0 00000000002F Maximum Erase Count
A6 100 100 __0 000000000009 Minimum Erase Count
A7 100 100 __0 000000000024 Average Erase Count
C2 _31 _31 __0 00250019001F Temperature
C7 100 100 __0 000000000000 SATA CRC Error Count
F1 100 100 __0 00000000072D Total Written
F2 100 100 __0 000000000F1C Total Read

-- IDENTIFY_DEVICE ---------------------------------------------------------
0 1 2 3 4 5 6 7 8 9
000: 0040 3FFF C837 0010 0000 0000 003F 0000 0000 0000 .@?..7.......?......
010: 4832 5542 484C 3331 3032 3532 3039 3720 2020 2020 H2UBHL310252097
020: 0000 0000 0000 534E 3135 3333 3020 5477 696E 4D4F ......SN15330 TwinMO
030: 5320 5353 4420 2020 2020 2020 2020 2020 2020 2020 S SSD
040: 2020 2020 2020 2020 2020 2020 2020 8001 4000 2F00 ..@./.
050: 4000 0000 0000 0007 3FFF 0010 003F FC10 00FB 0101 @.......?....?......
060: FFFF 0FFF 0000 0007 0003 0078 0078 0078 0078 4D20 ...........x.x.x.xM
070: 0000 0000 0000 0000 0000 001F 850E 0006 0044 0040 .................D.@
080: 0BF8 0000 706B 7401 4163 7069 B401 4163 207F 0001 ....pkt.Acpi..Ac ...
090: 0001 0000 FFFE 0000 0000 0000 0000 0000 0000 0000 ....................
100: 32B0 1DCF 0000 0000 0000 0008 4000 0000 5000 0000 2...........@...P...
110: 0000 2E26 0000 0000 0000 0000 0000 0000 0000 401C ...&..............@.
120: 401C 0000 0000 0000 0000 0000 0000 0000 0029 0000 @................)..
130: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
140: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
150: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
160: 0000 0000 0000 0000 0000 0000 0000 0000 0003 0001 ....................
170: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
180: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
190: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
200: 0000 0000 0000 0000 0000 0000 0031 0000 0000 4000 .............1....@.
210: 0000 0000 0000 0000 0000 0000 0000 0001 0000 0000 ....................
220: 0000 0000 10FF 0000 0000 0000 0000 0000 0000 0000 ....................
230: 0000 0000 0000 0000 0001 03E8 0010 0000 0000 0000 ....................
240: 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 ....................
250: 0000 0000 0000 0000 0000 36A5 ..........6.

-- SMART_READ_DATA ---------------------------------------------------------
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
000: 14 00 05 13 00 64 64 00 00 00 00 00 00 00 09 12 .....dd.........
010: 00 64 64 76 18 00 00 00 00 00 0C 12 00 64 64 E1 .ddv.........dd.
020: 00 00 00 00 00 00 A4 00 00 64 64 24 00 2F 00 09 .........dd$./..
030: 00 00 A5 00 00 64 64 2F 00 00 00 00 00 00 A6 00 .....dd/........
040: 00 64 64 09 00 00 00 00 00 00 A7 22 00 64 64 24 .dd........".dd$
050: 00 00 00 00 00 00 C2 22 00 1F 1F 1F 00 19 00 25 .......".......%
060: 00 00 C7 12 00 64 64 00 00 00 00 00 00 00 F1 32 .....dd........2
070: 00 64 64 2D 07 00 00 00 00 00 F2 32 00 64 64 1C .dd-.......2.dd.
080: 0F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
160: 00 00 00 00 00 00 00 00 00 00 02 00 21 00 00 7B ............!..{
170: 03 00 01 00 02 55 02 00 00 00 00 00 00 00 00 00 .....U..........
180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F3 ................

-- SMART_READ_THRESHOLD ----------------------------------------------------
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
000: 10 00 05 0A 00 00 00 00 00 00 00 00 00 00 09 00 ................
010: 00 00 00 00 00 00 00 00 00 00 0C 00 00 00 00 00 ................
020: 00 00 00 00 00 00 A4 00 00 00 00 00 00 00 00 00 ................
030: 00 00 A5 00 00 00 00 00 00 00 00 00 00 00 A6 00 ................
040: 00 00 00 00 00 00 00 00 00 00 A7 00 00 00 00 00 ................
050: 00 00 00 00 00 00 C2 00 00 00 00 00 00 00 00 00 ................
060: 00 00 C7 00 00 00 00 00 00 00 00 00 00 00 F1 00 ................
070: 00 00 00 00 00 00 00 00 00 00 F2 00 00 00 00 00 ................
080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
130: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
140: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
150: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
160: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
170: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
190: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
1F0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 CA ................

Re: Twinmos SATA SSDs wants low level format every four mont

Posted: June 9th, 2026, 19:00
by fzabkar
I have a 1TB Samsung 860 Evo SATA SSD. It periodically goes AWOL. I have managed to recover it about 30 times by allowing it to remain powered up with data cable disconnected. I believe the firmware repairs itself and the drive then keeps working for a while. Lately it has been lasting only a day before disappearing again.

A full scan with Victoria finds only one slow sector. SMART is clean. I am now running Puran's DiskFresh. This reads and rewrites every LBA non-destructively. I'll see if this fixes the problem. It will probably consume 2 or more P/E cycles, but the alternative is a dead drive.

DiskFresh runs concurrently with your normal applications, so there is no downtime. I was hoping that Victoria would provoke the drive into preemptively rewriting any difficult sectors, but maybe this didn't happen.
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