What is NAS?

Network-attached storage (NAS) involves using a network-connected, file-level storage server to provide data access to heterogeneous clients.

NAS definition

NAS systems are networked appliances containing storage drives that provide file-based storage services to devices throughout a network. This architecture allows other servers to avoid the task of serving data to other servers on the network, which occurs with Direct-attached Storage (DAS). To a client OS, NAS appears to be a file system. In contrast, a Storage Area Network (SAN) appears as a disk drive to the client OS.

Why NAS?

NAS offers a performance advantage over DAS in a number of use cases, particularly when multiple devices need to access storage. This results from the ability to precisely tune an NAS device for file serving. Depending on network traffic factors and storage communication protocol preferences, NAS may also be more effective than SAN for some workloads.

HPE NAS solutions

Drive value to your organisation with the right infrastructure for unstructured data. HPE file and object storage solutions span your needs, from affordable NAS to durable petabyte-scale storage.

Let’s talk

Speak with an HPE NAS expert about how we can help you address your storage challenges.


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1 IDC Worldwide Quarterly Disk Storage Tracker 2016Q1, product brand in units for price bands 1 to 3 combined for calendar year 2015