How to Buy Right 48 Port 10GBASE-T Switch?

For recent years, the advent of 10Gbase-t copper solutions has seen growing adoption. Compared to fiber optics, copper has made great advances in latency and power consumption. 10Gbase-t is thus becoming more popular in network switches and servers. If you have not got any 10G switches, you should get 10Gbase-t switches, such as 12 port, 24 port, or 48 port 10gbase-t switches which are cost-effective 10g sfp+ copper switches for data centers. This post mainly talks about 48 port 10gbase-t switch.

Why You Need 48 Port 10gbase-t Switch?

Like other BASE-T technologies, 10gbase-t uses the standard RJ45 Ethernet jack. 10gbase-t is backward compatible, auto-negotiating between higher and lower speeds, thereby not forcing an all-at-once network equipment upgrade. It means that the 10G copper connections can also work with 1 Gigabit Ethernet devices without requiring any expensive hardware replacements. The ability to autonegotiate between 1 and 10 gigabit speeds allows 10gbase-t server upgrades to occur on an evolutionary, as-needed basis. Cat5/Cat5e are supported for 10 Gigabit speeds up to 100 meters.

48 port 10gbase-t switch

48 port 10gbase-t switches help to resolve the congestion issue between network edge and core, which is caused by the broader adoption of Gigabit-to-the-desktop. The utilizing of 48 port 10gbase-t switch provides more design flexibility and it can be used at the center of a small business network or as an aggregation/access switch in a larger organization. 48 port 10gbase-t switch is ideal for expanding network capacity, removing performance bottlenecks and support of premise expansion needs. In simply put, deploying 48 port 10gbase-t switch can be less expensive to install and maintain while meeting the requirements of most short-distance connections within a data center.

What to Consider When Buying 48 Port 10gbase-t Switch?

Once there is a need for 48 port 10gbase-t switch, you shall buy the right switch from multiple vendors on the market? Which should you buy? What to consider when buying 48 port 10gbase-t switch? Here would give some guidelines by providing a comparison among three 10gbase-t switches 48 port from different vendors—Cisco (Cisco SG550XG-48T), NETGEAR (NETGEAR XS748T-100NES) and FS (FS S5850-48T4Q).

Model Cisco SG550XG-48T NETGEAR XS748T-100NES FS S5850-48T4Q
Ports 48×10 Gigabit Ethernet 10GBase-T copper port; 2x 10 Gigabit Ethernet SFP+ (combo with 2 copper ports); 1x Gigabit Ethernet management port 44×10 Gigabit Ethernet 10GBase-T copper port; 4×10 Gigabit Ethernet SFP+ 48x 10 Gigabit Ethernet 10GBase-T copper port; 4×40 Gigabit Ethernet QSFP+; Management and Console Ports (RJ45)
Switching capacity 960 Gbps 960 Gbps 1.28Tbps
Forwarding performance 714.24 Mpps 714.2 Mpps 952.32Mpps
Packet Buffer 4 MB 3MB 9MB

From the table, we can see that they have different features and capabilities. In comparison, FS 10gbase-t switch 48 port has the best switching performance. This 48 port 10gbase-t switch is built with 10 Gigabit Ethernet connectivity, giving you the speed you need to share information quickly. Moreover, it supports low-latency, line-rate 10g copper base-t technology with backward compatibility to Fast Ethernet and Gigabit Ethernet. The 48 port 10gbase-t switch is also able to cost-effectively migrate current network to 10G capacity by utilizing the existing cat6 RJ45 short connections up to 30 meters and cat6a/cat7 connections up to 100 meters. In short, the 10gbase-t switch 48 port can deliver substantial productivity gains today and help future-proof your network for the demanding applications of tomorrow. Furthermore, it’s simple to manage and can get the fast data speeds, nonstop availability, and advanced security you need in LAN. Generally speaking, when buying such high-performance 48 port 10gbase-t switch, you should pay attention to the following aspects.

48 port 10gbase-t switch

Port Density & Speed

When buying a 48 port 10gbase-t switch, you should also pay attention to other speed of ports besides the 48x 10 Gigabit Ethernet 10gbase-t copper port. Typically, the 48 port 10gbase-t switches also come with 10 Gigabit Ethernet SFP+ ports or 40 Gigabit Ethernet QSFP+ ports. With different vendors, the port numbers vary. There are 48x10gbase-t + 4x40g qsfp+, and 48x10gbase-t + 6x40g qsfp+ in the market, or network switches with 48x10gbase-t + 2x10g sfp+ are also available. Normally, with too few ports and not enough capacity will prove ineffective and one that is too large can be a waste of money. It is prudent to have an extra port or two available for future demand. The 48 port 10gbase-t switch with four qsfp+ ports can meet next generation Metro, Data Center and Enterprise network requirements.

Power and Latency

Advancements have allowed switch vendors to significantly lower power consumption on 10gbase-t switch ports. While early versions of 10gbase-t switches required up to 12 Watts per port, switch vendors now offer a range of 1.5 to 4 W per port depending on distance. FS 48 port 10gbase-t switch has rather low power consumption and low latency and remains relatively flat across all packet sizes.

Cost per Port

As power consumption has dropped, 10gbase-t switch prices have also dropped with per-port prices at less than $350. Take FS 48 port 10gbase-t switch as an example, its price is $4599 with 48x10gbase-t ports and 4×40 gigabit qsfp+ ports. So the cost per port would definitely be less than $350.

Conclusion

The 48 port 10gbase-t switch presents the right solution for extending beyond simple reliability to higher speed and performance while delivering unprecedented non-blocking 10 gigabit bandwidth at an affordable cost. When buying the 10gbase-t switch 48 port, make a network plan first and take into consideration what has mentioned above. If you are not aware of which 48 port 10gbase-t switch to buy, FS would be a good place to consult, who can help to make network planning by your requirements and recommend the suitable network switches.

What’s the Differece: 10GBASE-SR vs 1000BASE-SX

As the development of fiber optic network, there appears lots of industry standards for fiber optic transceivers. Although transceivers with different standards may have different features and performance, they sometimes can be used in the same switch port. Thus, many people may get confused by these transceivers. For example, 10GBASE-SR and 1000BASE-SX transceivers can both be inserted into the Cisco Catalyst 2960S-48TD-L switch, but the 10GBASE-SR transceiver may not work fine with the 1000BASE-SX module in another switch. Why? This post will discuss 10GBASE-SR vs 1000BASE-SX and whether 10GBASE-SR transceiver can down-support connect to 1000BASE-SX transceiver.

connect 10GBASE-SR to 1000BASE-SX

10GBASE-SR vs 1000BASE-SX

As mentioned above, 10GBASE-SR and 1000BASE-SX are two kinds of industry standards for fiber optic transceivers. This part will introduce them in turns.

10GBASE-SR

10GBASE-SR is defined in the IEEE 802.3 Clause 49 standard, specially designed for multi-mode fiber optic medium that uses 850 nm lasers. It has a data transmission rate of up to 10.3125 Gbps and can be used over multiple cabling options. But the transmission distance may differ as the fiber cable changes. For example, when used over OM1 cabling, the 10GBASE-SR has a maximum working distance of 33 meters, as opposed to 82 meters when applied over OM2 cabling. Nowadays, the 10GBASE-SR module usually applied over OM3 and OM4 cablings to give a more structured optical cabling used in large buildings. And the transmission distance respectively are 300m and 400m.

1000BASE-SX

Like 10GBASE-SR, 1000BASE-SX is also an IEEE 802.3z standard for the multi-mode fiber optic cabling. But it has a minimum transmission distance of 220m and a maximum of 550m. Offering 1Gbps data transmission rate, 1000BASE-SX modules are mainly used to connect high-speed hubs, Ethernet switches, and routers together in different wiring closets or buildings using long cabling runs.

Can 10GBASE-SR Transceiver Down-Support Connect to 1000BASE-SX Transceiver?

10GBASE-SR modules are generally referring to 10GBASE-SR SFP+ transceivers, and 1000BASE-SX modules are usually 1000BASE-SX SFP transceivers. And since SFP+ and SFP transceivers share the same size (as shown below), SFP transceivers can often used in most SFP+ ports (For example, almost all SFP+ ports of Cisco switch can accept SFP transceivers). Then can a 10GBASE-SR SFP+ transceiver down-support connect to the 1000BASE-SX SFP transceiver?

10GBASE-SR vs 1000BASE-SX

10GBASE-SR vs 1000BASE-SX Transceivers

The answer is no. Unlike copper SFP transceivers, 10GBASE-SR SFP+ transceivers do not have such functions as auto-negotiation. In fact, both 10GBASE-SR SFP+ and 1000BASE-SX SFP transceivers can only run at the rated speed fixed by the electro-optical conversion ASIC built into the transceiver hardware. That’s to say, 10GBASE-SR SFP+ transceivers can only run at 10Gbps and 1000BASE-SX SFP transceivers run at 1Gbps. So there is no such fiber link that one end does 1G while the other end does 10G.

10GBASE-SR vs 1000BASE-SX: Have You Known the Differences?

To conclude, although 10GBASE-SR and 1000BASE-SX share something in common, they are totally different Ethernet standards for transceivers. 10GBASE-SR SFP+ transceivers mainly work in 10G links, while 1000BASE-SX transceivers can only run at 1Gbps even though in the SFP+ slot. Thus, it will not work out to connect a 10GBASE-SR SFP+ transceiver with a 1000BASE-SX SFP transceiver.

NAS vs SAN: What’s the Difference?

In the era of information technology, data has become the most critical asset for companies. Without access to their data, companies may not be able to provide their customers with desired services. Thus how to effectively store, access, protect and manage critical data is a new challenge facing IT departments. Direct attached storage (DAS), network attached storage (NAS) and storage area network (SAN) are three main technologies for storage networking. Among them, NAS and SAN are similar in using internet technology to ensure users can access and manage their storage data easily. But they are in fact two different storage technologies. This post will focus on NAS vs SAN.

What Are Network Attached Storage and Storage Area Network?

Network attached storage is a file level storage system served as a local area network (LAN) node. It is usually referred to as a single storage device connected to network, allowing clients or associated devices in the LAN to share file-based data through a standard Ethernet connection.

Network attached storage

Unlike network attached storage, storage area network provides block-level network access to storage. It often consists of hosts, switches, storage elements, and storage devices that are interconnected using a variety of technologies, topologies, and protocols.

storage area network

NAS vs SAN: What’s the Difference?

As the name implies, a network attached storage consists just of storage device while a storage area network is a network. The followings are some other differences between them:

NAS vs SAN

1. NAS vs SAN Connections

The network attached storage system can be connected directly to the network using an Ethernet cable into an Ethernet switch. Almost any device that can connect to the LAN (or is interconnected to the LAN through a WAN) can connect to a network attached storage and share files with the use of NFS, CIFS or HTTP protocol.

In contrast, devices in storage area network system are connected together using a network fabric, such as iSCSI or Fibre Channel. And only server class devices with SCSI Fibre Channel in a virtual computing environment can be connected to the storage area network.

2. NAS vs SAN Data Identify

As mentioned above, network attached storage is a file level storage system. So it identifies data by file name and byte offsets, transfers file data or file meta-data and handles security, user authentication, file locking.

Storage area network stores data in a block level. It addresses data by disk block number and transfers raw disk blocks. In this case, storage area network has lower latency and higher performance than network attached storage.

3. NAS vs SAN Backups and Mirrors

Backups and mirrors of network attached storage are done on files, not blocks, to save bandwidth and time. And the snapshot can be tiny compared to its source volume.

Backups and mirrors of storage area network require a block by block copy, even if blocks are empty. A mirror machine must be equal to or greater in capacity compared to the source volume.

NAS vs SAN: Which One to Choose?

Network attached storage and storage area network are two popular solutions for networking storage. Which on to choose is largely depend on your actual requirements. With much simpler design, network attached storage is far less expensive than storage area network. And it is ideal for those who looking for an easily implemented storage solution. While storage area network is a high-performing and complex system, suitable for companies looking for top-of-the-line storage performance and reliability.

Hyperconverged Infrastructure Basics

Hyperconverged infrastructure has been talked a lot in recent years and its adoption is skyrocketing in data centers. However, many people are still confused by this term. This post will introduce it in details.

What’s Hyperconverged Infrastructure

Hyperconverged infrastructure is often named HCI. It is introduced in 2012 to describe a fully software-defined IT infrastructure that virtualizes all the elements of conventional hardware-defined systems. In other words, the networking and storage tasks in the hyperconverged infrastructure are implemented virtually through software rather than physically in hardware. Generally, hyperconverged infrastructure is at least composed of virtualized computing (a Hypervisor), a virtualized SAN (software-defined storage) and virtualized networking (Software-defined networking). It can be utilized as a way to pool together resources so as to maximize the interoperability of on-premises infrastructure.

Hyperconverged Infrastructure

Hyperconverged Infrastructure VS Converged Infrastructure

Hyperconverged infrastructure and converged infrastructure are two alternative solutions to replace the traditional IT infrastructure. This part will tell the differences between them to help you choose one over another for your network deployment.

Hyperconverged Infrastructure VS Converged Infrastructure

Hyperconverged VS Converged Infrastructure Components

Converged infrastructure defines compute, storage, networking and server virtualization—which are the four core components in a data center—as one dense building block. Hyperconverged infrastructure is born from converged infrastructure and the idea of the software-defined data center (SDDC). Besides the data center’s four core components, hyperconverged infrastructure integrates more components such as backup software, snapshot capabilities, data deduplication, inline compression, WAN optimization and so on.

Hyperconverged VS Converged Infrastructure Principle

Hyperconverged infrastructure is a software defined approach. It means the infrastructure operations are logically separated from the physical hardware, and all components in a hyperconverged infrastructure have to stay together to function correctly. While converged infrastructure is a hardware-focused, building-block approach. Each component in a converged infrastructure is discrete and can be used for its intended purpose. For example, the server can be separated and used as a server, just as the storage can be separated and used as functional storage.

Hyperconverged VS Converged Infrastructure Principle

Hyperconverged VS Converged Infrastructure Cost

Converged infrastructure allows IT to use a single vendor for end-to-end support for all core components instead of the traditional approach where IT might buy storage from one vendor, network from another and compute from another. It also offers a smaller footprint and less cabling, which can reduce the cost of installation and maintenance.

Hyperconverged infrastructure allows IT to build, scale and protect your IT infrastructure more affordably and effectively. For example, a 10GbE Access Layer Switch (8*10/100/1000Base-T+8*1GE SFP Combo+12*10GE SFP+) specially for hyperconverged infrastructure only costs US$ 1,699. And the software-defined intelligence reduces operational management, providing automated provisioning of compute and storage capacity for dynamic workloads.

Conclusion

It is reported that hyperconverged infrastructure will represent over 35 percent of total integrated system market revenue by 2019. This makes it one of the fastest-growing and most valuable technology segments in the industry today. The upfront costs of hyperconverged infrastructure may be a little high now, but in the long term it can pay off.

Latency: What’s the Differences Between Fiber and Copper?

Fiber optic communication has development rapidly in recent years. And in many applications fiber cable has replaced copper cable for higher speed and higher bandwidth applications. Therefore, numbers of people claim that fiber optic lines have lower latency than copper connections, while others do not think so. Then what’s the latency differences between fiber and copper?

fiber-vs-copper latency

Latency in Fiber and Cooper

Before comparing the latency differences between fiber and copper, latency refers to a time delay between stimulation and its response. Usually, it’s caused by velocity limitations in a physical system. Put it in simple terms, latency is the time it takes for a signal to travel from one place to another place. And there are diverse types of latency: network latency, Internet latency, audio latency, WAN latency, etc. No mater in a fiber optic network or a copper network, latency can be described as distance and speed. In addition, latency does exist. It’s just a question of fast or slow. One key factor that affects the latency is the signal speed in transmission media. Fiber and copper are two of transmission media. The type of media used in communication system depends on the bandwidth and transmission distance required by the application.

Fiber Latency

As we know, the speed of light in free space is about 3×10meter per second. While the speed of light in air is slower than that in a vacuum. So does in the glass. Therefore, when an optical signal travels in a fiber link, there are five latency contributors: two are created when the signal moves from the electrical domain to the optical; another contribution occurs as the signal goes through the optical fiber; and as the signal is converted from the optical domain to the electrical, latency occurs.

fiber latency

Copper Latency

Signals in copper cables are easy to be interrupted by around environments, especially in longer distance transmission. The signals will attenuate as distance increases, which will lead to data transmission error, page error and make users feel slow speed at the moment. Actually the transmission speed doesn’t slow slow down. Besides, alien crosstalk also would cause transmission errors and latency.

copper latency

Fiber vs Copper: What’s the Latency Difference?

Signals are transmitted at 2/3 the speed of light in fiber optic cables. In copper it can be faster than that. However, this cannot account for system latency. In longer distance, latency in fiber optic system is lower because of less need for processing and repeating of the signals. While signals in copper are affected by electromagnetic interference and are prone to higher rates of loss over long distances.

In addition, no mater in a fiber optic network or a copper network, latency can be described as distance and speed. In addition, during the whole transmission process, serialization delay that shows how fast a data pocket can be serialized onto the wire, has far more impact on shorter distances. For example, it will take 8ms to serialize a 1500-byte packet on 1.5Mbps link, while it will only need 1.2us on 10Gbps, or less on higher speed. That shows speed makes a significant difference.

Summary

In a word, the latency differences between fiber and copper are influenced by transmission distance, speed and environments. For shorter distance, copper cables can be the first choices, for the delay in it does not mean much and its low cost. For longer distance transmission, fiber cable offers lower latency for the whole network and can be an optimal choice.