It turns out that the maximum 30 TB SSD sold at 4000 yen actually has a capacity of 1 GB and the data is deleted more and more - GIGAZINE
Micron Unveils 9400 SSD: 30 TB Capacities With Best-In-Class Performance
Original Portable SSD TypeC USB3.1 4TB 6TB 16TB 30TB SSD Hard Drive 128TB External SSD M.2 for Laptop Desktop Flash Memory Disk - AliExpress
R0L55A HPE 30TB SAS 12Gbps 2.5-inch Internal Solid State Drive (SSD)
Samsung's new PM1733: PCIe 4.0 SSD at up to 30TB and 8GB/sec
EveryMarket
M.2.0 Mini Solid State Drive, High Speed 30TB USB 3.0 Original Computer Portable External Solid State Drives SSD TYPE-C Mobile SSD Compatible with PC, Laptop and Mac, 500GB, 11TB - Walmart.com
Walmart lists a 30TB portable SSD for $39. It is, naturally, a scam | Ars Technica
Samsung Doubles Its SSD Capacity - Starts Mass Production of a 30.72TB SSD
Kioxia Launches First PCIe 4.0 Enterprise SSDs: Up to 30TB, 1.4 Million IOPS, 6.9 GBps | Tom's Hardware
Beware this phony '30TB' portable SSD sold by Walmart | PCWorld