Micron Technology (MU)

[JLS]

I think you missed my point.

And perhaps you are a little misinformed.

Micron’s NAND business:

Micron Technology (MU) is the fourth-largest NAND (negative AND) manufacturer by revenue, but its 3D NAND puts it on top in terms of technology.

Micron was mainly focused on DRAM (dynamic random-access memory) until 2016. However, the appointment of Sanjay Mehrotra - cofounder of the second-largest NAND manufacturer (SanDisk) which was acquired by Western Digital (WDC) in 2016 - as Micron’s CEO brought renewed focus on NAND, enterprise SSDs (Solid-State Drives) in particular.

Micron’s revenue was driven by strong demand in the SSD, mobile, and embedded markets. Micron’s enterprise SSD revenue rose 50% sequentially in fiscal 1Q18. This strong SSD demand is expected to continue in 2018 as falling NAND ASPs boost SSD adoption in PCs (personal computer) and servers.

http://tinyurl.com/y9fxwwwb

I saw the life expectancy on one of MU's SSDs. It's rated at 2-Million hours.

There is no spinning drive rated anywhere near that. The best numbers I've seen for spinning drives is 10% failure after 3-years, which is roughly 25,000-hours. The failure rate goes up to 20% after 4-years. The lower life (compared to SSDs) is due to moving parts which wear out, and is made worse by elevated temperatures -- SSDs have no moving parts and generate less heat (which also reduces cooling costs at data centers).

My point was (still is) that the spinning drive business is going to severely drop off as those drives are replaced with SSDs. That will be reflected on WDC's bottom line, but not on MU's bottom line.