SSD question. 2x 256GB or 1 512gb

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m0stwanted

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Aug 23, 2013
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So I was looking at newegg today, and noticed they had two decent deals on the Samsung 850 pro's. Now with all the discounts I can get either two of their 256gb's for $246.48 or I can get one of their 512 gb for $259.99 and get a free 1tb external. I don't need the external, but I was wondering if their was any benefit to getting the 512 over the 2 256's? What is the communities opinion?
 
Solution
pasow
Two 256GB SSD's in RAID0 will yield some pretty good performance improvements over a single. however it is also twice as likely to fail. the single 512GB SSD will be less likely to fail and will be less problematic to set up. (TRIM support in RAID is not universal) i would personally recommend you go with the 512GB drive given the price difference is so minor now.


Just for reference though, i have two 256GB OCZ Vertex 4's in RAID0 on a Intel Sandy Bridge SATA3 controller and they are achieving this after 3 years of usage.
curent_bench.png

while the numbers are impressive in synthetics, the difference between this and a single drive is minor in most activities.
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Saberus

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Aug 23, 2013
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One less point of failure. If you put the two 256's in RAID 0 you -might- get faster reads, but if either drive dies you lose everything. You'd have double the chances of losing your data. For less than 15 bucks you get three times as much storage. I can always find use for a 1TB external drive. (BACKUPS!)
 
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pasow

pasow

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Nov 15, 2012
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Two 256GB SSD's in RAID0 will yield some pretty good performance improvements over a single. however it is also twice as likely to fail. the single 512GB SSD will be less likely to fail and will be less problematic to set up. (TRIM support in RAID is not universal) i would personally recommend you go with the 512GB drive given the price difference is so minor now.


Just for reference though, i have two 256GB OCZ Vertex 4's in RAID0 on a Intel Sandy Bridge SATA3 controller and they are achieving this after 3 years of usage.
curent_bench.png

while the numbers are impressive in synthetics, the difference between this and a single drive is minor in most activities.
 
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Solution
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Saberus

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Aug 23, 2013
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Rotate your backups. That way you have two different copies in case one backup was made when the system was already hosed.

Or make two backups and keep one in another location. It's what major companies do (or their IT people recommend), and storage is getting cheap enough that consumers can do the same. Better to have a disaster recovery plan in place and never need it than the opposite.
 
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