How much hard drive storage will a NAS provide?

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A NAS device can have either fixed amount of hard drive space or single/multiple hard drive bays that allow you to easily add more hard drives when more storage is needed (or swap out a drive when it becomes full or needs replacing).

A Network Attached Storage with a fixed amount of storage will have either one or two hard drives placed in an enclosure for storage space ranging from 500 GB to 4 TB. This is a good solution for those who are focused primarily on streaming media, or those who want to back up just a couple of computers with small storage capacities.

With the ability to add more hard drive space as needed, a NAS with multiple hard drive bays is a good solution for those with larger multimedia libraries, creative professionals (such as photographers and videographers), and small businesses or homes that require multiple computers to be backed up.

Another advantage of using a NAS with multiple hard drives is the ability to redundantly back up your data over multiple hard drives using RAID.

Tip: Some NAS devices also include one or several USB ports, enabling you to add even more storage via external hard drives. Additionally, depending on the NAS device, the USB port can be used to connect a printer if it includes a built-in print server.