&gt; have you seen case of SSD data loss due as result of not powering up for couple years?<p>In normal circumstances an SSD is not going to lose data if left powered off for two years. [1]<p>[1] <a href="http:&#x2F;&#x2F;www.anandtech.com&#x2F;show&#x2F;9248&#x2F;the-truth-about-ssd-data-retention" rel="nofollow">http:&#x2F;&#x2F;www.anandtech.com&#x2F;show&#x2F;9248&#x2F;the-truth-about-ssd-data-...</a><p><i>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&#x27;s not cost efficient to use them for cold storage anyway, so if you&#x27;re looking to archive data I would recommend going with hard drives for cost reasons alone.</i>