Direct Access File System
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Direct Access File System


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DEFINITION - Direct Access File System (DAFS) is a network file system, similar to Network File System (NFS) and Common Internet File System (CIFS), that allows applications to transfer data while bypassing operating system control, buffering, and network protocol operations that can bottleneck throughput. DAFS uses the Virtual Interface (VI) architecture as its underlying transport mechanism. Using VI hardware, an application transfers data to and from application buffers without using the operating system, which frees up the processor and operating system for other processes and allows files to be accessed by servers using several different operating systems. DAFS is designed and optimized for clustered, shared-file network environments that are commonly used for Internet, e-commerce, and database applications. DAFS is optimized for high-bandwidth InfiniBand networks, and it works with any interconnection that supports VI including Fibre Channel and Ethernet.

Network Appliance and Intel formed the DAFS Collaborative as an industry group to specify and promote DAFS. Today, more than 85 companies are part of the DAFS Collaborative.

Learn more about LANs (Local Area Networks)
LAN administration guide: LAN administration is an arduous task and your responsibilities often involve many different aspects and may include many tasks. This guide will help you with each step and task.
LAN network design considerations: What are the steps to be kept in mind while designing a network having three hundred nodes within a three-floor building and one server room?

10 Gigabit Ethernet tutorial: Connecting data centers, storage, LAN and beyond: Learn how to choose 10 Gigabit Ethernet cabling and components, why new Gigabit Ethernet protocols will improve performance, and how it can all result in data center optimization.
Best practices for securing your wireless LAN: Learn best practices for securing a wireless LAN (WLAN) in the enterprise, from systematically monitoring your WLAN for intruders to protecting users and the network itself.
A basic virtualized enterprise -- from 'Network Virtualization': Learn why and how to virtualize the network in this chapter from 'Network virtualization' by Victor Moreno and Kumar Reddy.
Configuring VLANs: Learn how to configure a virtual LAN (VLAN) in this step-by-step, automated, 15-minute demo.
Network administration guide: Network administration responsibilities, such as network design, troubleshooting, backup, documentation, security, and managing users are discussed in this guide.

CONTRIBUTORS: Jessica Taylor
LAST UPDATED: 04 May 2002

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More resources from around the web:
- DAFSCollaborative.org is the official Web site for DAFS.
- SearchStorage's Mark Lewis mentions DAFS in his story, "Where does NAS go from here?"





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