Well, in 2010 a 256GB ssd was upwards of $500+. Today, a TB SSD costs that. So yeah, capacity for price increases 4x over in 4 years. So 2022 is a good estimate for commodity 4TB SSDs.

I wonder if we will ever get nand storage below mechanical in price per GB. Even in 2022 I can image 8 - 10 TB mechanical disks being only $100 still, while the 2TB SSDs cost about that. Because by then we are probably hitting some physical limits.

I foresee two types for popular SSDs.

1. MLC at 512GB-1TB is all that needed for the boot/app drives for the next 5 years. They're already at decent prices, 3D stacked chips and another smaller process should be possible within 5 years to bring 1TB to about 200$. 2. TLC at 4TB+ for media/archival storage. I'd foresee 2TB TLC drive at 100$ within 5 years.

3.5 years for commodity 4TB SSD or less. I have a 1TB SSD, would gladly switch to a 2TB model for twice the price. As the Sandisk announcement shows, it is market not physical forces that will get us to 4TB.

RAID

In a notebook?

Its quite common, I have one for example.

Only the Lenovo W series supports RAID afaik.

My laptop is an Asus g7. A college of mine did some tricks to get a RAID0 in his macbook pro. The future is now.

I know, I was waiting. I have the optibay in MBP15 with a rotational disk for backups since SSDs have been so unreliable. The 1TB samsung has been amazing. You are correct, I should swap out the 1TB rotational for another 1TB and run RAID.

At this point you'll probably get the most increased performance by upgrading your MBP rather than RAID its storage.

I do want more Performance, but I really want more and faster storage so I think RAIDing another 1TB SSD is in order. And I couldn't get this with a new MBP. I think they only will accept a single PCIe drive.