Difference Between QSFP, QSFP+, QSFP28

SFP is short for small form factor. It refers to fiber optic transceivers supporting 1Gbps data rate. Except SFP, current market is full of various types of fiber optic transceivers, such as QSFP, QSFP+ and QSFP28. At the first sight, these transceiver modules are very similar. But actually, they have big differences. To know the difference clearly is good to make the right choice for your network connection. So what are the differences between QSFP,  QSFP+, QSFP28?

QSFP vs QSFP+

“Q” of QSFP means quad (4 channels). QSFP is a compact, hot-pluggable transceiver used for data communications. The QSFP specification supports Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards with different data rate options. QSFP transceivers support the network link over singlemode or multimode fiber patch cable. QSFP modules are commonly available in several different types: 4x1G QSFP, 4x10G QSFP+, 4x28G QSFP28. From this side, QSFP vs QSFP+ vs QSFP28 all share the same small form-factor. literally QSFP uses 4x1G lanes and was only found in some FC/IB contexts.

While QSFP+ transceivers, evolving from 4x1G lanes (QSFP) to 4x10G lanes, are designed to support 40G Ethernet, Serial Attached SCSI, QDR (40G) and FDR (56G) Infiniband, and other communications standards. QSFP+ standard is the SFF-8436 document which specifies a transceiver mechanical form factor with latching mechanism, host-board electrical-edge connector and cage. QSFP+ modules integrates 4 transmit and 4 receive channels plus sideband signals. Then QSFP+ modules can break out into 4x10G lanes. QSFP+ modules are used to connect switches, routers, Host Bus Adapters (HBAs), enterprise data centers, high-performance computing (HPC) and storage. But some may think QSFP as the same with QSFP+, especially in the Ethernet world.

QSFP+ vs QSFP28

QSFP+ and QSFP28 differs in “28” as the name says. QSFP28 is a hot-pluggable transceiver module designed for 100G data rate. QSFP28 integrates 4 transmit and 4 receiver channels. “28” means each lane carries up to 28G data rate. QSFP28 can do 4x25G breakout connection, 2x50G breakout, or 1x100G depending on the transceiver used. While QSFP+ supports the data rate of 40G, 4 channels for transmitting and 4 channels for receiving, each lane carrying 10G. QSFP+ can break out into 4x10G or 1x40G connection.

qsfp28 vs qsfp+

Usually QSFP28 modules can’t break out into 10G links. But it’s another case to insert a QSFP28 module into a QSFP+ port if switches support. At this situation, a QSFP28 can break out into 4x10G like a QSFP+ transceiver module. One thing to note is that you can’t put a QSFP+ transceiver into a QSFP28 port to avoid destroying your optics.

FS.COM QSFP+ vs QSFP28

Compatible with major brands such as Cisco, Juniper, Arista, Brocade, etc., FS.COM QSFP+ and QSFP28 modules can support both short and long-haul transmission. Here lists our generic QSFP+ and QSFP28 modules in the following table.

FS.COM Generic QSFP+
 fs.com qsfp+
FS.COM Generic QSFP28
 fs.com qsfp28
Conclusion

The difference between QSFP vs QSFP+ vs QSFP28 has been stated clearly in this article. Though QSFP is thought as QSFP+, when talking about 40G, actually we mean QSFP+. QSFP+ vs QSFP28 mainly differs in data rate and breakout connection. So you must be sure what you need is 40G QSFP+ or 100G QSFP28 for high density applications, especially when connecting with 10G SFP+.

Related news: FS.COM Offers QSFP 40G SR4 and QSFP28 100G SR4 at Competitive Price

Originaly published at http://www.fiber-optic-equipment.com

Spend Less on Building 100GbE Network With QSFP28 AOC

Currently 10GbE and 40GbE network are efficient and enough for some users. However, to some large-scale data centers, 40GbE Internet speed can’t meet their demands as the Internet continues to grow in size and traffic. According to research predicts, global data center Internet protocol traffic will grow by 31% every year within next five years. So 100GbE technology will become the mainstream in the near future. Cisco, Juniper, Arista provide 100GbE switches, routers and supported QSFP28 transceiver, QSFP28 AOC. But many enterprises still can’t upgrade to 100GbE network since the switch and QSFP28 AOC are quite expensive. Don’t worry about the high cost. This article will help you find a way to spend less on building 100GbE network with QSFP28 AOC.

QSFP28 AOC

100GbE QSFP28 AOC is composed of an OM4 multimode cable connecting two QSFP28 connectors on each end. The form factor design is easy for plugging and removal. The QSFP28 AOC is compliant to the QSFP MSA (multi-source agreement). QSFP28 AOCs support 100G QSFP28 standards and are available in various lengths (usually from 1-30 meters). 100G QSFP28 AOCs provide an affordable low-power alternative to interconnect 100G QSFP28 ports in data center applications. It’s useful for simplified intra rack and inter rack configurations. The following table lists 100GbE QSFP28 AOC of several famous brands.

QSFP28 AOC

Brands QSFP28 AOC Price
Cisco QSFP-100G-AOC (1m-30m) Above US$ 1,000
Arista AOC-Q-Q-100G (1m-30m) Above US$ 3,000
Juniper JNP-QSFP28-AOC (1m-30m) Above US$ 2,000
FS.COM QSFP28 AOC (1m-30m) From US$ 540 to US$ 630

Table 1. QSFP28 AOC Price Comparison

Switches Supporting QSFP28 AOC

Cisco, Arista, Juniper are three famous fiber optic transceiver manufactures. Transceiver modules and switches of these brands are very common in the market. As the demand for 100GbE data center keeps moving, these manufactures produce switches including 100GbE QSFP28 ports. Here I list four switches which can support QSFP28 AOC, Cisco Nexus 7700, Arista 7500R, Juniper QFX5110 and FS.COM S5850-48S2Q4C.

  • Cisco Nexus 3232C—The Cisco Nexus 3232C switch is a low latency, dense, high-performance 100GbE switch designed for data center. It can not only meet customers’ current network needs but also suitable for future applications such as big data, cloud and virtualization. Each of 32 100GbE QSFP28 ports can operate at 10, 25, 40, 50, 100 GbE.
  • Arista 7500R—Arista 7500R switches (7500R-36CQ, 7500R-36Q, 7500R-48S2CQ) is designed to lower power per 100GbE port and produce more reliable and dense network. The switches are available in a compact system design of 12, 8 and 4 slot. 7500R-36CQ has 36-port 100GbE QSFP line card. 7500R-36 owns 1/10GbE line card with two 100GbE QSFP28 ports. 7500R-48S2CQ is available with up to 6 100GbE QSFP28 ports.
  • Juniper QFX5110—Juniper provides two switches with 100GbE port: QFX5110-48S and QFX5110-32Q. QFX5110-48S is a 10GbE/100GbE data center access switch offering 48x10GbE SFP+ port and 4x100GbE QSFP28 ports. QFX5110-32Q offers up to 32x40GbE QSFP+ ports, or 20x40GbE QSFP+and 4x QSFP28 ports.
  • FS.COM offers two switches for 100GbE network: S5850-48S2Q4C and S8050-20Q4C. S5850-48S2Q4C provides 48x10GbE SFP+ ports, 2x40GbE QSFP+ ports and 4x100GbE QSFP28 ports. S8050-20Q4C has 2x40GbE QSFP+ ports and 4x100GbE QSFP28 ports.
Switch Brands Model Supported QSFP28 AOC Switch Price
Cisco Nexus 3232C QSFP-100G-AOC (1m-30m) About US$ 19,500.00
Arista 7500R-36CQ 100GBASE-AOC(3m to 30m)gggg Average US$ 60,000.00
7500R-36Q
7500R-48S2CQ
Juniper QFX5110-48S QSFP28 AOC (10 m)gg Above US$ 16,500.00
QFX5110-32Q
FS.COM S5850-48S2Q4C Generic QSFP28 AOC (1m-30m) US$ 6,900.00
S8050-20Q4C

Table 2. Price Comparison of Switches Supporting QSFP28 AOC

Spend Less With FS.COM Switches and QSFP28 AOC

Based on Table 1 and Table 2, to build a 100GbE network with QSFP28 AOC will cost a lot, especially when you require for products from Cisco, Arista and Juniper manufacturers. By comparison, you can see the price of FS.COM switches for 100GbE network and QSFP28 AOC is quite lower. So FS.COM can help you spend less on building 100GbE network with QSFP28 AOC. But if you have already owned Cisco, Arista or Juniper switches, you can buy compatible QSFP28 AOCs which are more cost-effective and have been tested to assure 100% compatibility.

Originally published at http://www.fiber-optic-equipment.com

Why not Use Third-party Fiber Transceivers for Your Ubiquiti Switches?

Ubiquiti is famous for its switches such as Edge Switch, Edge Router, UniFi switch. Last year, this manufacturer officially released its own SFP and SFP+ fiber optic transceivers which are compatible with their switches. At the same time, it’s said that fiber transceivers from some fiber optic transceiver manufacturers such as Fiberstore can support Ubiquiti switches. This article will discuss what kind of third-party fiber transceivers are compatible with Ubiquiti switches and which fiber optic transceiver manufacturers is the most reliable.

Ubiquiti Fiber Transceivers

Ubiquiti switches are specially designed for 1G and 10G network. They didn’t produce their own fiber transceivers until last year. They only provide a small amount of single mode and multimode fiber transceivers. UF-MM-1G and UF-SM-1G-S are designed for SFP ports on Ubiquiti switches. And fiber transceivers like UF-MM-10G, UF-SM-10G, UF-SM-10G-S are for Ubiquiti switches’ SFP+ ports.

Third-party Fiber Transceivers For Ubiquiti Switches

Except their own SFP or SFP+ transceivers, those from other fiber optic transceiver manufacturers like Cisco, Dell, HP, Finisar, Brocade have been tested to be compatible with Ubiquiti switches by some users. Cisco, the world famous fiber optic transceiver manufacturer, has seven SFPs supporting Ubiquiti switches, Cisco GLC-LH-SM 30-1299-01 SFP, Cisco GLC-SX-MM, Cisco GLC-SX-MM 1000BASE-SX SFP, Cisco SFP-H10GB-CU1M, Cisco MGBSX1 Gigabit SX Mini-GBIC SFP Transceiver and Cisco GLC-T. Besides, for 10G network, Cisco SFP-10G-SR can be plugged in SFP+ ports on their switches.

Fiberstore Fiber Transceivers For Ubiquiti Switches

Fiberstore also has a wide variety of SFP and SFP+ transceivers compatible for Ubiquiti switches. Users have recommended some SFPs and SFP+s from Fiberstore, for instance, SFP1G-LX-31 1310nm (single mode SFPs), SFP-1G85-5M (multi-mode), SFP-GB-GE-T Module, SFP-10G85-3M (multi-mode).

Comparison Between Ubiquiti and Fiberstore Fiber Transceiver

There are so many third-party transceiver manufacturers providing compatible fiber transceivers fro Ubiquiti switches. But which fiber transceiver supplier should you choose? The answer is Fiberstore. Now let’s see why Fiberstore is more advantageous by comparing Ubiquiti with Fiberstore fiber transceiver.

    • Fiber Transceiver Category—Ubiquiti has only one single mode SFP and one multimode SFP. As to SFP+ transceivers, there only two single mode modules and one multimode module. The fiber transceiver category is very limited. While users have plenty of choices for SFPs and SFP+s from Fiberstore. As mentioned above, Ubiquiti switches support some fiber transceivers from third-party fiber optic transceiver manufacturers. Fiberstore offers many compatible brands like Cisco, Dell, HP, Finisar, Brocade, etc. Those SFPs and SFP+s have been tested to be suitable for Ubiquiti switches.
    • Fiber Transceiver Quality—Some fiber optic transceiver manufacturers produce SFP and SFP+ transceivers with low price. However, the quality of those fiber transceivers can’t be assured. In our test center, we have switches from Cisco, Dell, Extreme, Juniper and other famous brands. Every fiber transceiver offered by Fiberstore before shipping has to go through strict test to assure 100% compatibility and high performance.

fs fiber transceiver

    • Fiber Transceiver Price—Except fiber transceiver quality, fiber transceiver price is another important factor to be considered. Compare fiber transceiver price of Fiberstore with that of other fiber optic transceiver manufacturers, it’s obvious that Fiberstore has more advantages. That’s one of the reasons why Fiberstore wins popularity among customers. You can check the following screenshots about the the feedback from customers.


customer review2

Conclusion

If you have to purchase fiber transceiver for your Ubiquiti switches, you can get SFP or SFP+ from Ubiquiti. Or you can buy from third-party fiber optic transceiver manufacturers. How to choose a reliable supplier from so many fiber transceiver manufacturers? When buying fiber transceiver, the quality, price, and after-sales service should be considered. As one of fiber optic transceiver manufacturers, Fiberstore is suggested to be a good choice for fiber transceiver needs. For more information about FS.COM fiber transceiver, please visit our site http://www.fs.com or contact us via sales@fs.com.

Originaly published at http://www.fiber-optic-equipment.com

QSFP+ to 4xSFP+ AOC and QSFP+ MTP Breakout Cable Solution

Migration from 10G to 40G is an inevitable trend in data center. Migration means you need new QSFP+ transceiver modules, fiber patch cables and other equipment. Common two methods to migrate from 10G to 40G for short distance are QSFP+ to 4xSFP+ AOC and QSFP+ MTP breakout cable solution. When you come across this issue, it’s hard to tell which one is better. This article will introduce their difference and tell you how to make the right decision.

40G QSFP+ to 4xSFP+ AOC

40G QSFP+ to 4xSFP+ AOC (active optical cable) is composed of a QSFP+ connector on one side and four individual SFP+ connectors on the other side. The QSFP+ connector (40Gbps rate) offers four parallel, bidirectional channels and each operates at up to 10.3125 Gbps. The QSFP+ connector can be installed into QSFP+ port on the switch and feed up to four 10G SFP+ links. And the link lengths can reach 100 meters on OM3 fiber. It’s a cost-effective interconnect solution for 40G and 10G switches and servers.

40G QSFP+ to 4xSFP+ Breakout AOC

QSFP+ MTP Breakout Cable

The other common solution for 10G to 40G short distance migration is to use breakout cable and of course corresponding transceivers. How to achieve the connection? You’re gonna need 40GBASE-SR4 QSFP+, MTP to LC breakout cable and 10GBASE-SR SFP+. Here we are going to explain 40GBASE-SR4 QSFP+ and MTP-LC breakout cable in details.

First, 40GBASE-SR4 QSFP+ is designed for 40 Gigabit data center and can support the link length of 100 m and 150 m respectively on laser optimized OM3 and OM4 fiber cables. This module offers 4 independent channels for transmitting and receiving. Each lane is capable of running 10Gbps signal and is compliant to IEEE 10GBASE-SR specification. Connecting with 12-fiber MTP/MPO cables, it can support 40Gbps network. Or combine 40GBASE-SR4 QSFP+ with 4x10G breakout cable and send data to four 10GBASE-SR SFP+.

Second, MTP to LC breakout cable is suitable for high density network. It’s specifically designed for fast Ethernet, fiber channel, data center and gigabit Ethernet application. QSFP+ MTP to LC breakout cable is used for a direct connection between QSFP+ to 4xSFP+ ports with no patch panels or intermediate trunks in between. On one side, it’s an MTP connector with 8 or 12 fibers. On the other side, there are 4 duplex LC connectors. Each fiber cable transmits 10Gbps.

MTP-LC breakout cable

Differences of Two Solutions

Two methods of 10G to 40G migration over short distance have been introduced in above content. Comparing the two different solutions, you can find some obvious differences. The following lists some points for your convenience to make suitable decision.

  • Price—The second solution needs at one QSFP+, 4 SFP+ and an MTP-LC breakout cable. The price of these devices is higher than 40G QSFP+ to 4xSFP+ AOC. So 40G QSFP+ to 4xSFP+ AOC is cheaper.
  • Complexity—The second solution seems more complicated since it needs more optical equipment. You need to order and manage cables.
  • Distance—40G QSFP+ to 4xSFP+ AOC can only support the distance up to 100 m. While using MTP-LC breakout cable, the link distance can reach 150 m over OM4 cable.
Conclusion

You must have a full understanding of these two solutions. 40G QSFP+ to 4xSFP+ AOC is easier and cheaper than MTP to LC breakout cable. If you’re a new technician and have tight budget, you can buy AOC cable. But if you don’t care too much about money, you can select 40GBASE-SR4 QSFP+ and MTP to LC breakout cable to get a little longer link length. Hope this article can help you make the right decision.

Originaly published at http://www.fiber-optic-equipment.com

What Distance Can 100G QSFP28 Transceiver Support?

The rapid growing bandwidth keeps driving the need for 100G transceivers to build data centers, enterprise, long-haul networks. Just as 1G, 10G optical modules, 100G QSFP28 transceivers also have single-mode and multimode categories to support short and long distance network links. So what kind of 100G QSFP28 transceivers are included? What distance can each 100G QSFP28 support?

100G QSFP28–Supported Distance Below 1km

Multimode 100G QSFP28 modules are used for short distance applications, such as QSFP28 Cisco QSFP-100G-SR4-S 100GBASE-SR4 transceiver. It provides 100GBASE-SR throughput at a wavelength of 850 nm by connecting with multimode MTP/MPO cable. It can support the link lengths up to 70 m over OM3 MPO fiber patch cable and 100 m over OM4 MPO fiber jumpers.

qsfp28-sr4

But there is a special 100G QSFP28 transceiver–QSFP-100G-PSM4-S. This QSFP28 is a single-mode transceiver. It carries 100G data over 12-fiber single-mode MPO fiber patch cords. However, the maximum link lengths it can support is only 500 meters.

100G QSFP28–Supported Distance From 1km-10km

To support long distance signal transmission, single-mode transceivers are generally selected. The following will list some 100G QSFP28 modules which can reach the link distance from 1 km to 10 km.

QSFP28 100GBASE-CWDM4. This transceiver applies WDM multiplexing and demultiplexing technique and carries 100G Gigabit Ethernet signal over four wavelengths. Different from the above two 100G QSFP28 optics, it’s configured with duplex LC interfaces. With QSFP28 100GBASE-CWDM4 modules, you can build networks with link lengths up to 2 km over single-mode duplex LC patch cords.

QSFP28 100GBASE-LR4. This hot-pluggable 100G QSFP28 form factor can support 103.1Gbps data rate. It’s compliant with the QSFP28 MSA and IEEE802.3ba 100GBASE-LR4. The 100G data is transmitted over four wavelengths. Because of multiplexing and demultiplexing within this QSFP28 transceiver, it matches duplex LC patch cords. And it can support links up to 10 km over single-mode LC fiber cable.

qsfp28-lr4

100G QSFP28–Supported Distance Over 10km

In fact, 10km link lengths of 100G can’t meet users’ demands. So 100G QSFP28 which can support over 10km lengths are needed to build long-haul network. Due to the optic package size and the maximum power, the distance supported by 100G QSFP28 transceivers are restricted. Vendors are required to research and develop optics that allow for existing high power components and devices to consume lower power in a smaller space. It’s said there are 100G QSFP28 ER4 and 100G QSFP28 ZR4 transceivers in the market. Each can support the maximum network link lengths up to 30 km and 80 km. But consumers can’t easily get those 100G QSFP28 modules. But we believe that ER4 and ZR4 technology will be available in the market sooner or later.

At present, if your switch ports are QSFP28 and you need to build 100G network links over 10km, you are suggested to apply amplification technology. The other method is 100G CFP ER4 that support 40km link lengths. Of course your switch port should be CFP or you can find a device to convert QSFP28 to CFP.

Conclusion

Now people can get 100G QSFP28 transceivers for link lengths up to 10 km. Yet not too many transceiver vendors have enough stocks. In the Internet era, what is important is the speed. Thus, seek for reliable vendors who have huge stocks of 100G QSFP28 like FS.COM. And we will release 100G QSFP28 ER4 and 100G QSFP28 ZR4 in the future to support longer distances.

Originally published at http://www.fiber-optic-equipment.com

Tips for Fiber Cable Installation You Should Know

Fiber cable installation is not an easy task for most of us. It’s thought as the job of professional engineers since special training is needed during the complicated process. But it would be better if you know knowledge of fiber cable installation in case that you need to run fiber cable in your home or business. This article is going to offer you some tips for fiber cable installation.

fiber-cable-installation

Before Fiber Cable Installation

Before starting fiber cable installation, please make sure there is fiber optic service in your area. If it’s available, find the nearest distribution box. What you need to do is to run fiber cable from the box to your house.

A considerate plan is the first step of successful fiber cable installation. Carefully design the cabling route. It would be better if you mark where the cable goes, into the walls, or underground, or through conduit… Point out all the termination points and splice points. At the same time, write down any potential problems you may come across during the installation. A good plan is also beneficial to avoid fiber cable waste.

Once finish the plan, you’re going to buy fiber optic cable for your applications. Except fiber optic cable, you need tools for cable management & installation, fiber splicing and fiber testing. So make a shopping list for your fiber cable installation. Then select a reliable fiber cable supplier who can meet the requirements of both high quality and low cost.

During Fiber Cable Installation
What You Should Do

Leave spare cable length—Each fiber cable for installation should be a few inches longer than the plan says. Because you can’t make sure everything goes as you wish. So you should leave plenty of spare fiber cables when beginning cable installation work.

Avoid electrical interference—Though fiber cable is not as vulnerable to electrical noise as copper cables, some devices, such as the boxes for fluorescent lights, may cause interference. So keep your fiber cable three or more feet from those devices.

Avoid end face contamination—The tip of fiber optic connector can be easily contaminated or damaged. So leave protective caps on until you are ready to plug into the equipment. Don’t forget to inspecting the end face before plugging in. If there is any contaminate, clean it.

Fiber network testing—Test each section of your fiber optic network. That’s easy to discover the problem and troubleshoot it. Don’t do this work until you finish the entire cable installation. In that situation, it’s hard to find out the trouble if the network fails.

What You Should Not Do

Don’t bend fiber cables. Fiber optic cables perform the best when it is running straight. But during installation in reality, sometimes bending can’t be avoided. Cables from different vendors may have different standards of bend radius. Or you can buy bend insensitive fiber cable for better performance.

Don’t pull too hard on the cable. Properly pull the fiber cable to avoid bending or snagging through the conduit or underground. However, don’t pull it too hard especially when the fiber cable is too short. Otherwise, it would ruin the cable or fiber optic connector.

Don’t mix and match different core sizes. Fiber optic cables are typically color coded. From the outside cable jacket, you can get information about fiber core sizes. To know more about fiber cable jacket, you can visit my last blog What Can We Get From Fiber Cable Jacket?

Don’t pinch the fiber cable. Pinch the fiber cable can squeeze the fiber and affect link performance. When use zip-ties, pay attention to this point.

Conclusion

Once you finish fiber cable installation, you can enjoy fiber optic network. See, fiber cable installation is not as tough as you think. Follow these tips mentioned above when you run cables for your house, you can keep away from most bothering issues.

Originally published at http://www.fiber-optic-equipment.com

What Should You Know About Fibre Channel?

Before Fibre Channel appears, SCSI (small computer system interface) was used as the transmission interface between servers and clustered storage devices. But as the high speed demands keep increasing, Fibre Channel replaces SCSI inevitably due to its higher transmission data rate, flexibility, and long distance. This article is going to introduce you some details about Fibre Channel.

What Is Fibre Channel?

Fibre Channel, short for FC, is a technology for transmitting data between computer devices at data rate of 1, 2, 4, 8, 16, 128 Gbps. It’s mainly used in storage area networks (SAN) in commercial data centers. It’s useful for connecting computer servers to shared storage devices and for interconnecting storage controllers and drives.

Fibre Channel Transceivers

Except optical fiber cable, Fibre Channel transceiver is the other vital equipment to connect the Fibre Channel network in data centers. It provides the interface between Fibre Channel systems and the optical fibers of the SAN. FS.COM offers SFPs and SFP+s that are compatible with Fibre Channel. Fiberstore Fibre Channel SFPs support the distance up to 80km and the data rate of 2G/4G. As to our Fibre Channel SFP+ transceivers, they can support the data rate up to 8Gbps and 10Gbps. In Fiberstore, you can also find some compatible brands of FC transceivers including Cisco, Juniper, Brocade, HPE, etc. What’s more, all these modules have been tested to assure 100% compatible. For your information, the following table shows some hot FC transceivers for 2G/4G and 8G/10G network applications.

fs-fc-sfps

fibre-channel-sfp-sfp-plus
Transfer to High Speed Fibre Channel

However, as the need for high-bandwidth never stops increasing, the data rate of 2G, 4G or even 8G can’t meet the high speed requirements. So many data centers move to higher Fibre Channel standards, for example, 16G Fibre Channel. 16G FC links increase the network speed twice as 8G FC and 40% faster than 10G FC. The transition to 16G FC makes data transfer smoother, quicker and cost-effective from the good side. But from the other side, the transition still faces some challenges. There might be some data communication error rates that may affect the network performance. And the physics of 16G FC can possibly bring some new restrictions on fiber cabling and transceiver modules. Therefore, before starting to transfer to higher speed Fibre Channel infrastructure, you should better follow the tips listed below.

First, cleaning issue. In fiber optics connection, contamination is thought as a big problem which may lead to link failure. So you should clean all the transceiver modules, connectors and other cable junctions to ensure there is no contamination in the fiber optic connection. Some fiber testers and cleaning tools are necessary for your cleaning work.

Second, analyze the optical power budget between transmit and receiver ports. It requires that the power margin (transmit power minus power loss during the data transmission through the cable) should be more than the receiver power of the optical transceivers. At the same time, it also should meet the FC protocol specification.

Third, measure the light level on the transmitting side and receiving side. You can use suitable fiber optical light source or optical power meter to measure the power level on critical links. If the power level were not in the right station, check whether the cable length is suitable or cable bend radius reaches the maximum. Then you are suggested to purchase customized bend insensitive fiber cable for your special use.

Summary

Fibre Channel is commonly used for the connection of SAN in enterprise storage. You can find 2G/4G FC SFPs, 8G/10G FC SFP+ modules and matching fiber patch cables from FS.COM. If you need to upgrade your Fibre Channel network to 16G or even higher, remember the above tips and make sure the 16G FC are compatible with 4G FC and 8G FC.

Originally published at http://www.fiber-optic-equipment.com