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- Samsung, Crucial Queued(NCQ) TRIM Data Corruption Bug Facts
- -----------------------------------------------------------
- Issue #1
- 1. Linux implemented SATA 3.1 "Queued(NCQ) TRIM" support.
- 2. Samsung and most likely Crucial SSDs wrongly reported that "Queued(NCQ) TRIM" was supported when in fact it wasn't.
- 3. Samsung and Crucial SSDs behaved very badly when "Queued(NCQ) TRIM" was used.
- 3. Linux has since blacklisted "Queued(NCQ) TRIM" on Samsung and Crucial SSDs.
- 4. Linux had a bug which bypassed the Samsung and Crucual blacklist for "Queued(NCQ) TRIM", it's since been fixed.
- 5. OSX and Windows do not support "Queued(NCQ) TRIM" and won't for the foreseeable future.
- Issue #2
- 1. Linux had a "Non-Queued TRIM" bug which would send the wrong blocks to the SSD to be TRIMed.
- 2. OSX and Windows have working "Non-Queued TRIM" support.
- 3. "Non-Queued TRIM" has been properly supported for quite some time on modern SSDs.
- Conclusion:
- 1. Enabling TRIM on Windows is safe on modern SSDs. It's actually enabled by default in most cases.
- 2. Enabling TRIM on 3rd party SSDs in OSX using either Trim Enabler or trimforce(OSX 10.10.4 and up) is safe on modern SSDs.
- 3. Keeping your non-Apple SSD's firmware up to date is usually a good idea as new firmware versions usually contain bug fixes.
- References:
- https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/
- http://forums.macrumors.com/threads/os-x-el-capitan-opens-door-to-trim-support-on-third-party-ssds-for-improved-performance.1891936/page-10#post-21469307
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