When formatting a storage device, one of the options you’ll encounter is the allocation unit size. This setting determines the size of the clusters that will be used to store data on the device. The choice of allocation unit size can have a significant impact on the performance and efficiency of the storage device.
In general, larger allocation unit sizes are more efficient for storing large files, while smaller allocation unit sizes are better for storing small files. This is because smaller allocation unit sizes reduce the amount of wasted space on the storage device. However, smaller allocation unit sizes can also slow down the performance of the storage device, as the device will have to access more clusters to read or write data.