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The Digital Audio Workstation
Published in Hilary Wyatt, Tim Amyes, Audio Post Production for Television and Film, 2013
Storage Area Networks can transfer multiple channels of video and audio data at very high speeds between RAID arrays and a very high number of simultaneous users. Many SAN systems use Fibre Channel – a fibre-optic bidirectional interface that can transfer data at a rate faster than either Ethernet or SCSI. Fibre Channel can transfer data at up to 2 gigabits/second between devices that may be up to 6 miles apart over a dedicated network (a 10 Gbps version is in development). The RAID array(s) and SAN hardware are connected directly to a hard drive controller card installed in each attached workstation. Unlike the LAN, the SAN eliminates the need for a shared server and numbers of locally attached drives. Each editing system sees the SAN attached storage in exactly the same way that it would see media saved to a locally attached drive, and all editing is carried out using the shared files directly from the centralized storage system without the need to make a copy first. Because each user has direct access to the RAID, the operations of one editor have no effect on the operational efficiency of the network for other users, and the system is centrally managed by a Fibre Channel switch. All data is mirrored to a second storage device connected directly to the SAN, and all backing up and restoring is carried out invisibly.
Storage System Basics
Published in Al Kovalick, Video Systems in an IT Environment, 2013
Network attached storage (NAS) and storage area networking (SAN) are discussed in Chapter 3B—a chapter dedicated to these technologies. In a nutshell, both technologies are used to provide storage to network attached nodes. A NAS provides remote resources for both sharing storage and sharing files. A SAN, in its most native configuration, provides only shared storage resources. With the use of a CFS, discussed earlier, a SAN may be configured to share files among attached nodes. Clients attach to a NAS using Ethernet usually. Clients and servers attach to SAN storage using Fibre Channel and, more recently, Ethernet. General-purpose servers (including NAS servers) often use SAN storage. They both can offer excellent A/V performance and are the bedrock of many AV/IT systems.
Force-System Resultants and Equilibrium
Published in Richard C. Dorf, The Engineering Handbook, 2018
A SAN or storage area network is a dedicated network connecting servers and storage devices. Storage subsystems such as disk arrays or magnetic tape backup units are accessed over this backend network without loading of the LAN. SANs facilitate sharing stored data among multiple servers by avoiding the three-step process (read I/O, network transfer, write I/O) required in transferring data on traditional server-hosted I/O architectures. Furthermore, they permit autonomous data transfer between devices simplifying backup and data replication for performance or reliability, and encourage the spatial distribution of devices on the network, while maintaining the capability for centralized management.
iSDS: a self-configurable software-defined storage system for enterprise
Published in Enterprise Information Systems, 2018
Wen-Shyen Eric Chen, Chun-Fang Huang, Ming-Jen Huang
SAN is a block-level data storage solution that uses dedicated networks (Tate et al. 2005). NAS is a file-based network that utilises a general network (Gibson and Van Meter 2000). SAN storage is usually connected by fibre optic cables. On the other hand, a NAS storage is usually connected by network cables. Therefore, data in NAS storage are more constrained than that of SAN due to narrower bandwidths and NAS is commonly used as a file server. Compared to SAN, NAS has the advantage of lower cost. On the other hand, SAN performs better and thus is more suitable for heavy-load workloads. Hyper-converged storage is an emerging storage architecture. It combines storage, computing, networking and virtualisation in one hardware unit (Townsend 2014). It gained popularity because storage can be easily scaled out with more nodes in the environment using virtual machines.
Efficient resource management techniques in cloud computing environment: a review and discussion
Published in International Journal of Computers and Applications, 2019
Frederic Nzanywayingoma, Yang Yang
A virtual processor also called virtual CPU (vCPU) is a technique to share physical CPU with different VMs. By default, each VM is allocated its own vCPU. Storage Area Network (SAN) is a storage architecture that connects the storage system to the application server over the network. SAN storage devices provide data storage space for VMs in the system using shared software to provide block-level data sharing service.