What is a storage network?
Storage network (SAN) is a network of disk arrays, tape libraries or optical jukeboxes connected by net switches. The discs are connected to the servers so that the discs appear locally connected. The disk fields can be located in a remote data center, completely separate from the servers to which they are connected. Discar fields are storage devices that contain multiple hard drives connected to the central controller. Napisk libraries are devices that contain one or more tape units and multiple tape cassettes. The tapes are loaded into a robot with a robot. Optical jukeboxes are similar to tape libraries, but instead of using tape units and tapes tape use optical units and optical discs.
Most storage networks are connected by Fiber Channel Protocolsystem interface (SCSI) commands over the network. The switches are connected using a twisted pair of copper wire or optical cables. This type of cabling must be nainstaLined separately from normal network infrastructure.
Storage network can also be connected via the Internet -based technology (IP -based) technology called IP called Small Computer System Interface (ISCSI). The ISCSI solution can connect storage devices via a local network (LAN), a wide network (WAN) or over the Internet. Unlike the Fibere Channel network network, ISCSI does not require any special cabling. Instead, they use the existing network infrastructure.
The storage network has its own file system. This file system allows SAN files to get on multiple servers using different operating systems. The file system is programmed in a way that minimizes the storage file and time search. It also makes network management more efficient and allows you to independently of network components.
Using the storage network simplifies the management of storage devices. More servisERs have access to a single San. These servers can be set to start directly from SAN, allowing the server to switch rapidly. Cables and storage devices may not be moved to switch from one server to another.
Storage network is designed to recover after a disaster. The network may include multiple remote locations. Sans also has built -in data replication. This data replication keeps SAN available even if it fails a disk or a complete disk field.