Micron has replaced its U.2 and AIC-format 9200 SSDs with an U.2-only 9300 line, beefing up capacities from 11TB to up to 15.36TB.

The 9200 included ECO, PRO and MAX variants for capacity-optimised, read-intensive and mixed workloads, but the ECO model has been scrapped for the 9300.

The 9300 PRO uses 64-layer 3D NAND in TLC (3bits/cell) density – double the layers used in the 9200 SSDs, but same density.

The PRO touts 3.84TB, 7.68TB and 15.36TB capacity levels, whereas the old 9200 equivalent topped out at 7.68TB and the ECO stretched to 11TB.

The 9300 MAX, optimised via over-provisioning for mixed use with more writes, has lower 3.2TB, 6.4TB and 12.8TB capacities.

Latency has also been lowered in the 9300s from 92μs/21μs read/write to 86μs/11μs.

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