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Swapping older Samsung Enterprise SSD for Consumer SSD (EVO 850) in Dell PowerEdge R820 server in RAID 5 configuration?

I work for a nonprofit organization that contracts with a
local IT outfit. We are currently using three enterprise SSD drives in our Dell
PowerEdge R820 rig, set up in a RAID 5 configuration. We have been having discussions
about upping our capacity to at least 1 TB (possibly 2 TB), because we always seem to be
up against our capacity limit as things stand
now.



The contracted IT outfit has recommended
three Samsung SM863 SATA 1.92TB (Enterprise) drives to replace the current drives. Their
cost on the drives was going to bring our total to around $6,000 (not including labor).
Of course, you can buy these drives direct from Samsung for $1,260. This is where my
mistrust of this recommendation began to grow, as a $1,000 price difference from OEM
versus the IT outfit is very odd to say the least.



I've done a bit of research and found that when
it comes to solid state, the enterprise drives have about the same median lifespan as
the consumer level drives, like the Samsung EVO 850 1TB, which sell for considerably
less money (around $300 each) or Samsung PRO 850 1TB ($400). The median lifespan on the
850 EVO 1.5 million hours versus the enterprise level, which are 2 million hours. The
850 PRO has 2 million hours.



These are a few of
the articles I found about Enterprise versus
Consumer:




href="https://www.backblaze.com/blog/enterprise-drive-reliability/" rel="nofollow
noreferrer">https://www.backblaze.com/blog/enterprise-drive-reliability/



href="http://www.computerworld.com/article/2687068/consumer-drives-shown-to-be-more-reliable-than-enterprise-drives.html"
rel="nofollow
noreferrer">http://www.computerworld.com/article/2687068/consumer-drives-shown-to-be-more-reliable-than-enterprise-drives.html



The
guy we contract with for IT is totally against using anything less than Enterprise-level
drives in our server. We currently have about 30 computers in our facility that are
connected to the server at any given time.



My
question is, what should we as a non-profit do in this situation? We have the ultimate
authority over what hardware we use because we own the server. Should we go against the
advice of our contracted tech and go with EVO or PRO drives or will we regret it down
the line?



Given the price differences, we CAN
afford to keep a couple of EVO or PRO drives as backup in case the drives fail. We could
NOT do that with the Enterprise drives (if we can afford them at all), since they are
$1,200 each.




We can buy any of the
drives direct from Samsung and get the OEM warranty of three years for EVO or 10 years
for PRO that come with them, too.

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