Data Warehouse is a data collection system that gathers data to support management decision-making. Data Warehouse usually contains databases and systems that are used to extract data from them.
NAS, Network Attached Storage is a network server that does not provide any other services than those related to file management. The NAS is usually used in local area network (LAN) and it usually supports multiple protocols for data access. The functionality is based on using common protocols with files (where as SAN uses usually block based approach with proprietary protocols).
NFS stands for Network File System. Commonly used NFS can access files over network as if they were in your local machine. A common way to implement network drives.
RAID stands for Redundant Array of Inexpensive Disks. With this technology single file can be distributed over multiple disk to result in greater speed and redundancy.
SAN stands for Storage Area Network. SAN is a storage infrastructure that is usually used in enterprises to attach storage to network.
SATA, Serial ATA is a storage interface that is used e.g. in connecting hard disks to motherboard. The cables used in SATA are thin resulting no resistance to airflow inside the chassis and they are easier to handle than the cables used in parallel ATA. The SATA connections have capacity starting from 150Mbps and are planned to extend to 600 Mbps.
WebDAV, stands for “Web-based Distributed Authoring and Versioning”. It is a set of extensions to the HTTP protocol which allows users to collaboratively edit and manage files on remote web servers.
You may also want to look what wikipedia says about Enterprise Storage.
The largest project on grid computing in Europe, EGEE, has also published a comprehensive list of grid acronyms.
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