Tech2020 :
and I can use this for 1TB using 256GBx4 NVME SSD m2 cards to get 13000MB/s speed. this is not only for 8 TB ...
Eventually, concepts like this filter down to the consumer level.
Just like NVMe
Just like SSD
Just like HDD
Just like 64bit/32bit/16bit....
That this particular thing is $400 is meaningless.
Lastly, I invite you to describe
your particular use case that justifies 4 x 256GB NVMe drives in a RAID array.
Actual numbers (not theoretical benchmarks) with and without would be helpful...
The real world jump from floppy drive to HDD was huge. Speed AND size
The real world jump from HDD to SSD was huge, in terms of speed
The real world jump from SSD to NVMe, big, but not as large as before.
SSD + RAID 0? Useless, in the vast majority of actual use cases
NVMe + RAID 0? So far, useless in the vast majority of actual use cases.
Optane? A rehash of IRST, just with a faster cache tech.
Now...if you're a movie production house, in early development of Cars 5, or Toy Story 8....this may be useful to you now.
Otherwise...it is simply "nice to know about".