With 4 TB of storage, this is a good hard drive if you need a larger storage unit. The form factor is 2.5".
From Amazon
SanDisk Professional 4TB G-DRIVE ArmorATD, Dust, Drop, Shock and Water resistant, portable rugged external HDD for MAC, Up to 135MB/s, USB-C, USB 3.2 Gen 1, Thunderbolt 3
Clove Technology
SanDisk G-DRIVE ArmorATD external hard drive 4 TB Black
Scan
SanDisk Professional 4TB G-DRIVE ArmorATD HDD