[Google, Microsoft, Facebook] Reliability of nand-Based SSDs: What Field Studies Tell Us
ieeexplore.ieee.org/document/8013175Posted Jan 23, 2019, 8:58 AM UTC
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ieeexplore.ieee.org
This is from August, 2017. Still intereting though.
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Posted Jan 23, 2019, 8:58 AM UTC
This is from August, 2017. Still intereting though.
Interesting points in summary:
NAND seems to age, regardless if its been written to or not (explains the warranty from manufacturing-date).
SLC seems no more reliable then MLC (holds data longer, can be written more to but suffers the same age issues as all NAND storage, as such is no more reliable then MLC).
I had a quick read through but eyes began to glaze over. Can you TLDR with regards to aging over time? Does it look like SSDs have an average shelf-life, or is there a combo of time and usage?
I think it raises an interest point in regards to SATA drives in a 2.5" vs NVME drives under GPUs, and what kind of aging they might experience at different temperatures.
See the study from Google, Page 71 - Figure 3 (https://www.usenix.org/node/194415)
They've not gone into depth but it seems quiet significant even at almost no write cycles given. I'll see if I can find out more ... I remember optimal temperature curves being given in a more recent study.
Maybe the PowerPoint presentation from Facebook is a bit easier to grasp:
https://people.inf.ethz.ch/omutlu/pub/flash-memory-failures-in-the-field-at-facebook_sigmetrics15-talk.pptx