Subjects:
A storage area network (SAN) is a dedicated, centrally managed, secure information infrastructure, which enables any-to-any interconnection of servers and storage systems.
A SAN can be configured to provide a nearly infinite pool of storage that you can grow and move between servers, as they need it. The storage can be added to and removed without requiring the server to be rebooted. The services provided by the server continue to operate without interruption.
The primary purpose for implementing a SAN is to provide a large storage pool that multiple hosts could access. Common storage configurations involve direct attachment of storage to a host. This storage is only available for use by that host. If there were another host that needed storage, you would need to buy additional storage to install on that host. The host with excess capacity would not be able to share its storage with another host.
In a SAN, all networked devices share storage capacity as peer resources; they are not the exclusive property of any one server. You can use a SAN to connect servers to storage, Servers to each other, and storage to storage through h
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As SAN technology develops, it is growing beyond the use of any one kind of technology. If you combine the different links from the servers together over a 1000Base switch, you would make better use of the available bandwidth to the storage. Since the disks and the storage processors for the time being are either SCSI or SSA or Fiber Channel based, the physical interconnect will be Fiber or SCSI or SSA. NAS is something that could easily be attached through a Gigabit Ethernet network. With a SAN, virtually unlimited expansion is possible with hubs and switches. Storage area networks remove data traffic, like backup processes, from the production network giving IT managers a strategic way to improve system performance and application availability. It was designed as an Ethernet backbone switch-to-switch and switch-to-server technology. Fiber Channel and switched fabric technology eliminate single points of failure on the network. Thus surging the higher bandwidth speeds down from the wiring closet and data center to the servers and end users PCs.
You wouldn’t directly connect a host to a pool of storage through a Gigabit Ethernet connection. IT managers can more easily centralize management of their storage systems and consolidate backups, increasing overall system efficiency.
Issues
What is Gigabit Ethernet?
Gigabit Ethernet supports 1000 Mbps over Ethernet media. It was decided that Gigabit Ethernet will look identical to Fiber Channel at the physical layer.
Essay's Topics
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