raid 0+1 question

[odyta]

i want to buy this SEDNA - PCIe Quad M.2 SSD SATA 6G 4 Port Raid Adapter with 4 of this Transcend MTS800 128GB, M.2 SSD (80 mm, SATA III, MLC), my question is this setup better then 4x Samsung 2.5-Inch 120 GB 850 EVO SSD an why is better or worse
ty

 

[USAFRet]

i want to buy this SEDNA - PCIe Quad M.2 SSD SATA 6G 4 Port Raid Adapter with 4 of this Transcend MTS800 128GB, M.2 SSD (80 mm, SATA III, MLC), my question is this setup better then 4x Samsung 2.5-Inch 120 GB 850 EVO SSD an why is better or worse
ty

What will you be using this RAID array for?
None of those options are a good idea.

 

[odyta]

local database for test purposes, what would you advise me?

 

[USAFRet]

local database for test purposes, what would you advise me?

Testing what, exactly? How a RAID works and performs?

Otherwise, no RAID at all. There are multiple other ways to do what I think you need.