Data Storage & Backup Devices |
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Overview: Even with the advent of the paperless office, today businesses still continue to generate increasing amounts of information that require filing digitized cabinets and systems of all sizes. These systems must be secure and reliable for storing generating and accessing data. The productivity and survivability of organizations is becoming ever more reliant on the ability to store, organize, and share this business information.
Organizations are challenged to
Applications:Lanner specializes in providing such solutions designed to support your storage needs and requirements. Lanner provides both SAN and NAS solutions for your requirements and for your applications. But when is SAN used and when is NAS used. To understand the potential for applications both technologies need to be examined. What is NAS? :A network-attached storage (NAS) device is a server that is dedicated to file sharing. NAS does not provide any of the activities that a server in a server-centric system typically provides, such as e-mail, authentication or file management. NAS allows more hard disk storage space to be added to a network that already utilizes servers without shutting them down for maintenance and upgrades. With a NAS device, storage is not an integral part of the server. Instead, in this design, the server still handles all of the processing of data but a NAS device delivers the data to the user. A NAS device does not need to be located within the server but can exist anywhere in a LAN and can be made up of multiple networked NAS devices. Availability of data can potentially be increased with NAS because data access is not dependent on a server - the server can be down and users will still have access to data on the NAS. Performance can be increased by NAS because the file serving is done by the NAS and not done by a server responsible for also doing other processing. The performance of NAS devices, though, depends heavily on the speed of and traffic on the network and on the amount of cache memory (the equivalent of RAM) on the NAS computers or devices. Scalability of NAS is not limited by the number of internal or external ports of a server's data bus, as a NAS device can be connected to any available network jack. NAS can be more reliable than DAS because it separates the storage from the server. If the server fails, there is unlikely to be file system corruption, although partially-created files may linger. However, if the power source or OS of the NAS fails, corruption is still possible. What is SAN?:A storage area network (SAN) is an architecture to attach remote computer storage devices such as disk array controllers, tape libraries and CD arrays to servers in such a way that to the operating system the devices appear as locally attached devices. Cost and complexity is dropping |
