Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » N »

NDAS - Network Direct Attached Storage

Network Direct Attached Storage (NDAS) is a proprietary digital storage technology that utilizes a Lean Packet Exchange (LPX) protocol to connect external digital storage devices to a network via Ethernet or USB. Unlike Network-Attached Storage (NAS), the LPX-based Network Direct-Attached Storage isn’t routable, so the storage hardware can't be directly accessed via the internet.

Originally developed by Ximeta in 2003 (and later marketed by IOCELL, which acquired Ximeta's NDAS technology in 2011), Network Direct-Attached Storage is also different than Network-Attached Storage in that each client requires a software driver in order to access the NDAS storage hardware. The software driver enables any client on the network to directly control, use and share the NDAS device or devices.

Advantages of Network Direct-Attached Storage

The purported advantages of Network Direct-Attached Storage are better performance, lower overhead (no operating system is needed in the device itself), enhanced security and simplified installation and ease of use. A variety of external digital storage devices can be used in Network Direct-Attached Storage form, including hard drives, optical drives, tape drive, flash drives and more.


Network Direct-Attached Storage stands in contrast to Direct-Attached Storage (DAS) in that the latter refers to storage hardware that cannot be directly connected to a network, but they share the inability to be accessed via the internet. Network-Attached Storage (NAS) and Storage Area Networks (SANs), on the other hand, are more closely related to NDAS in that they both provide access to storage hardware on the network.

The primary difference between Network-Attached Storage and Storage Area Networks is that whereas NAS offers file-level storage reading, SANs are networks composed of storage devices that facilitate block-level storage. NDAS offers both file-level and block-level storage capabilities.

Recommended Reading: What Is Enterprise Storage?

8 Agenda Apps to Help Students Stay Organized

Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More »

List of Free Shorten URL Services

A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More »

Top 10 Tech Terms of 2015

The most popular Webopedia definitions of 2015. Read More »

Java Basics, Part 1

Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »

Java Basics, Part 2

This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »

The 7 Layers of the OSI Model

The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »