Network-Attached Storage

Network-Attached Storage.

File Sharing Technology Evolution. Diagram Description automatically generated.

What is NAS ?. NAS is shared storage on a network infrastructure.

General Purpose Servers vs. NAS Devices. Diagram Description automatically generated.

Benefits of NAS. Support comprehensive access to information Improves efficiency Improved flexibility Centralizes storage Simplifies management Scalability High availability – through native clustering Provides security integration to environment (user authentication and authorization).

Components of NAS. Diagram Description automatically generated.

NAS File Sharing Protocols. Two common NAS file sharing protocols are: CIFS – Common Internet File System protocol Traditional Microsoft environment file sharing protocol, based upon the Server Message Block protocol NFS – Network File System protocol Traditional UNIX environment file sharing protocol.

Network File System (NFS). Client/server application Uses RPC mechanisms over TCP protocol Mount points grant access to remote hierarchical file structures for local file system structures Access to the mount can be controlled by permissions.

NAS File Sharing - CIFS. Common Internet File System Developed by Microsoft in 1996 An enhanced version of the Server Message Block (SMB) protocol Stateful Protocol Can automatically restore connections and reopen files that were open prior to interruption Operates at the Application/Presentation layer of the OSI model Most commonly used with Microsoft operating systems, but is platform-independent CIFS runs over TCP/IP and uses DNS (Domain Naming Service) for name resolution.

Diagram Description automatically generated. NAS Implementations.

Integrated NAS Connectivity. Diagram Description automatically generated.

Gateway NAS Connectivity. Diagram Description automatically generated.

NAS Management. Most ship with vendor management software 01 Have unique management issues 02 Require preliminary analysis 03 Need additional complementary software 04.

Managing NAS Environments. Managing an Integrated System Both NAS component and the storage array are managed via NAS management software Managing a Gateway System NAS component managed via NAS management software Storage array managed via array management software.

Storage Consolidation with NAS. Diagram Description automatically generated.

Server Consolidation with NAS. Diagram Description automatically generated.

END. THANK FOR WATCHING. Brain in head with solid fill.