expiredgonzo1281 posted Aug 03, 2022 12:43 AM
Item 1 of 5
Item 1 of 5
expiredgonzo1281 posted Aug 03, 2022 12:43 AM
2TB Samsung 970 EVO Plus M.2 PCIe NVMe Internal SSD
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Samsung uses "journaling" to preserve data
Crucial and Sabrent can lose data
"However, due to the nature of DRAM chips, DRAM cannot store data when power is lost, which is a legitimate reliability concern for SSDs when unexpected power outages occur. Most consumer SSDs aren't equipped with the power loss capacitors that we see on enterprise SSDs, which makes them more vulnerable to losing data during unexpected power loss events...Thankfully, some SSD manufacturers have countermeasures in place for such an occasion. One example is a technique used by Samsung (opens in new tab) that employs journaling to keep as much data intact as possible during a power outage...
I tested a random selection of four NVMe SSDs from four vendors. Half lose FLUSH'd data on power loss. That is the flush went to the drive, confirmed, success reported all the way back to userspace. Then I manually yanked the cable. Boom, data gone.February 21, 2022
Update 2: models that lost writes:SK Hynix Gold P31 2TB SHGP31-2000GM-2, FW 31060C20Sabrent Rocket 512"
Some Consumer NVMe SSDs Reportedly More Prone To Data Loss During Power Outage
By Aaron Klotz published February 23, 2022
DRAM plus a power outage could makes for a bad situation
https://www.tomshardwar
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