![]() On power loss you'll loose data, and with parity raid, you'll have multiple damaged stripes (and toast your data). Samsung has a weird journal log system but it doesn't properly protect write order fidelity. They lack proper power loss protection (no capacitors to protect the DRAM buffer for upper/lower pages). The idea behind using SSD's in raid 5 as opposed to raid 10 has been discussed in multiple posts here recently on Spiceworks, so I will recommend you do a quick search for that.I saw a customer project fail and crash/burn with dataloss with these drives. I can personally say that I'm using the Samsung 850 Evo series SSD's in raid 5 on a new server build, and I have not run into an issue yet. As Scott alluded to, the underlying principles of storage will be the same for NAS as it is for a server.
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