[產品資訊] Samsung SSD 850 PRO, 840 PRO, PM853T 等系列 SSD 在 Linux 下 TRIM 出事

Some Samsung SSDs may suffer from a buggy TRIM implementation

by Bruno Ferreira — 10:22 AM on June 16, 2015

A new bug may be present in the firmware of some Samsung SSDs. An engineer from search provider Algolia has written up a blog post detailing his team's saga of troubleshooting data corruption in some of their servers. Ultimately, Algolia narrowed down the problem to an apparent bug in the TRIM implementation used in Samsung drives.

This TRIM bug can cause affected drives to zero out 512-byte blocks of data in incorrect, seemingly random locations. For larger files, the net result is corrupted data, while smaller files can be overwritten entirely.

Algolia ruled out other causes for the corruption by carrying out a thorough investigation of several other layers in their service's stack, including Linux's RAID implementation, kernel, and filesystem. The company also found that servers running Intel drives were unaffected by this issue.

The affected drives in use at Algolia are:

    Samsung MZ7WD480HCGM-00003 (model SM843TN)
    Samsung MZ7GE480HMHP-00003 (model PM853T)
    Samsung MZ7GE240HMGR-00003 (model PM853T)
    Samsung SSD 840 PRO Series
    Samsung SSD 850 PRO 512GB

If Algolia's determinations are correct, this problem is potentially quite serious. It also wouldn't be the first SSD-related black eye for Samsung, which recently issued two separate updates to remedy the read slowdowns we've seen with the 840 EVO SSD.

We've brought Algolia's claims to Samsung's attention, and we'll update this post with more information as it becomes available. Thanks to our shy anonymous tipster for the heads-up.

http://techreport.com/news/28473 ... trim-implementation



事件原文出處:
When Solid State Drives are not that solid
https://blog.algolia.com/when-so ... are-not-that-solid/

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之前打算入返隻850 eva 1tb hold hold 先好D

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"When Solid State Drives are not that solid"
好犀利既標題 ....

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宜家d電子野真係無得話邊隻邊隻好d
Plextor 在 M3 M5 年代個個都推, 邊有人諗到 M6S 又會有問題?
計我話岩價岩心水就買, 只要有保養, 正正常常咁用, 其他野由運氣主使吧
反正再reliable既產品都不能保證 100% 良率...

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所以買SSD 都係買番大路野 起碼出事全世界都知道
(intel samsung  Crucial) 唔怕佢出事最怕唔知佢有冇事.
如果銷量低的貨 出左呢D事都無人知無人提.

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偏偏我隻850pro唔係裝windows
唔知osx會唔會出事呢

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回覆 7# akitohk


Mac OS 背後咪就係 Linux 囉....

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回覆  akitohk


Mac OS 背後咪就係 Linux 囉....
alan328 發表於 2015-6-25 09:59



    暈...係unix

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回覆  akitohk


Mac OS 背後咪就係 Linux 囉....
alan328 發表於 2015-6-25 09:59


LINUX = UNIX?

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