6.5 million in equivalent 1-terabyte units (note that NAND chips tend to be 64-512GB, the unit is just to illustrate approximate loss). However, I'm reading it beyond the 6.5 exabytes since that the WD press release (or any Kioxia statement) did not state that the production has been resumed, so I'm assuming it's actually a downtime and not just bad chips.
Global flash shipments last year were estimated to be ~600EB, so that is ~1%.
So nothing dramatic. Except that there is bad component shortage already (no idea whether flash is a bottleneck in the general shartage situation)
>So nothing dramatic
A 5% target miss in ~2018 triggered the avalanche of NAND price. So 1% isn't insignificant.