The principle and function of 4g router-storage router
We
know that the continuous development of enterprises will generate massive
amounts of data, and these ever-expanding and massive amounts of information
must be stored and managed. Storage routers have many places worth learning.
Today we mainly introduce the study notes of storage routers and SAN routers.
What
storage router is?
The
difference between a storage router and a network router is that the routing of
the storage router data uses a storage protocol such as FCIP (FC over IP)
instead of a communication protocol such as TCP/IP. From the basic functions of
the storage router described earlier, it is easy to see that the FCIP storage
protocol allows devices in different SANs to establish communication without
merging these separate devices into one large SAN; it also allows any device to
be established between all devices. A storage system connected to any device.
The
storage router referred to here should be called a storage router accurately. SAN
can be seen as an extension of the storage bus concept, which uses a similar
unit in a local area network (LAN) and a wide area network (WAN) to
interconnect storage devices and servers (these units include: storage routers,
hubs, Switch and gateway). SANs can be shared between servers or proprietary to
a server, either as a local storage device or as an extension to a geographical
area.
This
is not difficult to bring out the essence of the storage router, it is actually
a device that enables users to connect to the switched storage environment on a
standard data network. It should be noted that such devices are not used to
directly connect devices to a local area network or enterprise backbone, but to
build a separate network infrastructure for the storage network. Its main
feature is to greatly improve the data availability of the disaster tolerant
system, the overall reliability and stability, and the interconnection diagram
of multiple SAN storage systems constructed by the storage router is as follows.
The
role of the storage router
In
the process of storage, although servers and storage devices provide good
storage performance, as an interconnected device in a network, it is often a
bottleneck restricting data storage; on the other hand, a company is accustomed
to the entire network. Divided into different network segments, forming a
number of independently operating storage area networks (SANs), which makes
network storage in different departments blocked. In this case, storage router products optimized for
storage are also born.
The
main feature of the storage router is that it greatly improves the data
availability of the disaster tolerant system, the overall reliability and
stability, and the interconnection of multiple SAN storage systems built by the
storage router.
The
continuous development of enterprises will generate massive amounts of data,
and these ever-expanding and massive amounts of information must be stored and
managed. In the process of storage, although the server and the storage device
provide good storage performance, as an interconnected device in the network,
it is often a bottleneck restricting data storage; on the other hand, often a
business is used to the whole The network is divided into different network
segments, forming a plurality of independently operated storage area networks
(SANs), which makes the network storage of different departments blocked.
Storage router products
optimized for storage are very important for enterprises, and network
administrators must be proficient.
From
the classification of routers, the grades are divided into high, medium and
low-end routers, and from a structural point of view, modular routers and
non-modular routers,
The
common categories are as follows:
First,
the structure is divided into non-modular routers and modular routers.
Usually
the mid- to high-end routers are modular and the low-end routers are
non-modular. The modular structure allows for flexible router configuration to
accommodate the ever-increasing business needs of the enterprise, and
non-modular ones can only provide fixed ports.
From
performance, it can be divided into wire-speed routers and non-wire-speed
routers.
The
so-called line-speed router is completely capable of smooth transmission
according to the bandwidth of the transmission medium, basically without
interruption and delay. Usually wire-speed routers are high-end routers with
very high port bandwidth and data forwarding capabilities, capable of
forwarding packets at media rates; low-end routers are non-wire-speed routers.
But some new broadband access routers also have wire-speed forwarding
capabilities.
Functionally,
routers can be divided into enterprise routers, backbone routers, and access
routers.
(1)
Enterprise-class
routers connect many terminal systems and have many connection objects, but the
system is relatively simple and the data traffic is small. The requirements for
such routers are to implement as many end-point interconnections as possible in
a cheap way. Requirements to support different quality of service.
(2)
The
backbone router is a key device for realizing enterprise-level network
interconnection. It has a large data throughput and is very important. The
basic performance requirements for backbone routers are high speed and high
reliability. In order to achieve high reliability, network systems generally
adopt traditional redundancy technologies such as hot backup, dual power
supply, and dual data path, so that the reliability of the backbone router is
generally not a problem.
(3)
Access-level
routers are mainly used to connect small business customer groups within a home
or ISP.
The
modular router is usually divided into border routers and intermediate node
routers according to the location of the network.
It
is obvious that border routers are at the edge of the network and are used for
connections of different network routers; intermediate routers are in the
middle of the network, which are usually used to connect different networks and
serve as a bridge for data forwarding. Because the network location of each is
different, its main performance has a corresponding focus, such as the
intermediate node router because it has to face a variety of networks.
Identifying the nodes in these networks depends on the MAC address memory
function of these intermediate node routers.
For
the above reasons, when selecting the intermediate node modular router, it is
necessary to pay more attention to the MAC address memory function, that is, to
require a modular router with a larger cache and a stronger MAC address memory
capability. However, because the border router may accept data from many
different network routers at the same time, this requires the bandwidth of the
backplane of the border router to be wide enough, which of course depends on
the network environment in which the border router is located.
Second,
according to performance grades are divided into high, medium and low-end
routers
Router
product classification is very complicated, and there are many types according
to different classification criteria. We need to be very careful when we
understand it.
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