http://www.anandtech.com/show/9248/the-truth-about-ssd-data-retention "All in all, there is absolutely zero reason to worry about SSD data retention in typical client environment. Remember that the figures presented here are for a drive that has already passed its endurance rating, so for new drives the data retention is considerably higher, typically over ten years for MLC NAND based SSDs. If you buy a drive today and stash it away, the drive itself will become totally obsolete quicker than it will lose its data. Besides, given the cost of SSDs, it's not cost efficient to use them for cold storage anyway, so if you're looking to archive data I would recommend going with hard drives for cost reasons alone."
【在 F***Q 的大作中提到】 : : http://www.anandtech.com/show/9248/the-truth-about-ssd-data-retention : "All in all, there is absolutely zero reason to worry about SSD data : retention in typical client environment. Remember that the figures presented : here are for a drive that has already passed its endurance rating, so for : new drives the data retention is considerably higher, typically over ten : years for MLC NAND based SSDs. If you buy a drive today and stash it away, : the drive itself will become totally obsolete quicker than it will lose its : data. Besides, given the cost of SSDs, it's not cost efficient to use them : for cold storage anyway, so if you're looking to archive data I would
a*a
13 楼
840 evo这个问题是面市近一年后被发现的,本质上和tlc有关,850 evo 引入3d tlc就 无此问题了。
谢谢转帖,两三年前关注data retention时也读过类似文章,也曾记得“but only after it had reached the end of its useful life span and was then stored at abnormal temperatures”这个context,但当时看见文章里“30度下保存一年”的数字 却是烙在心里反倒渐渐忘记这个数字的适用条件。当时关注data retention是因为2012年 一个很著名的测试各大牌子ssd寿命的实验,其中一项是过了预期寿命后测data retention,确实易丢数据,但是在大量擦写远超预期寿命的情况下。
【在 F***Q 的大作中提到】 : : http://www.anandtech.com/show/9248/the-truth-about-ssd-data-retention : "All in all, there is absolutely zero reason to worry about SSD data : retention in typical client environment. Remember that the figures presented : here are for a drive that has already passed its endurance rating, so for : new drives the data retention is considerably higher, typically over ten : years for MLC NAND based SSDs. If you buy a drive today and stash it away, : the drive itself will become totally obsolete quicker than it will lose its : data. Besides, given the cost of SSDs, it's not cost efficient to use them : for cold storage anyway, so if you're looking to archive data I would