This hard drive from Seagate has room for 300 GB of data. This model has a 2.5" form factor, which apart from this model is commonly used in SSD drives.
From Amazon
Seagate Exos 15E900 ST300MP0006 - Hard drive - 300 GB - internal - 2.5" SFF - SAS 12Gb/s - 15000 rpm - buffer: 256 MB
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