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How can you design a fibre channel fabric for high availability and disaster recovery?

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Fibre channel (FC) is a high-speed network technology that connects servers and storage devices in data centers. It provides low latency, high bandwidth, and reliable data transfer for mission-critical applications. However, FC networks also face risks of failures, outages, and disasters that can affect business continuity and data integrity. Therefore, it is essential to design a FC fabric that can ensure high availability and disaster recovery for your data center. In this article, you will learn how to do that by following these steps:

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1 Understand your requirements

Before you design your FC fabric, you need to understand your business and technical requirements for high availability and disaster recovery. These include your recovery point objective (RPO), which is the maximum amount of data loss you can tolerate, and your recovery time objective (RTO), which is the maximum amount of downtime you can afford. You also need to consider your budget, scalability, performance, and security needs. Based on these factors, you can choose the best FC topology, switch type, and redundancy level for your fabric.

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Anupam Kumar Mishra

CSE'24 || FDE @Harman International || CISCO Certified CCST CyberSecurity || Google Cloud Arcade Facilitator || Google Cloud Certified
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The first step is to understand the specific requirements of the network. This includes factors such as the number of devices, the amount of data being transmitted, and the level of redundancy required.

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2 Choose your FC topology

The FC topology is the way you connect your servers and storage devices to the FC switches. There are three main types of FC topologies: point-to-point, arbitrated loop, and switched fabric. Point-to-point connects two devices directly, arbitrated loop connects multiple devices in a loop, and switched fabric connects multiple devices through one or more switches. For high availability and disaster recovery, switched fabric is the preferred topology because it offers more flexibility, scalability, and fault tolerance than the other two. You can also use different types of switched fabrics, such as mesh, core-edge, or cascaded, depending on your network size and complexity.

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Anupam Kumar Mishra

CSE'24 || FDE @Harman International || CISCO Certified CCST CyberSecurity || Google Cloud Arcade Facilitator || Google Cloud Certified
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Yes here it is The next step is to choose the Fibre Channel topology that best suits the requirements of the network. There are several topologies to choose from, such as point-to-point, arbitrated loop, and switched fabric.

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3 Choose your FC switch type

The FC switch type is the hardware device that routes the data packets between the servers and storage devices in the FC fabric. There are two main types of FC switches: director-class and edge-class. Director-class switches are high-end devices that offer more ports, bandwidth, and features than edge-class switches. They are usually deployed in the core of the FC fabric to handle heavy traffic and provide redundancy and failover. Edge-class switches are low-end devices that offer fewer ports, bandwidth, and features than director-class switches. They are usually deployed at the edge of the FC fabric to connect the servers and storage devices to the core. For high availability and disaster recovery, you should use a combination of director-class and edge-class switches to balance cost and performance.

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Anupam Kumar Mishra

CSE'24 || FDE @Harman International || CISCO Certified CCST CyberSecurity || Google Cloud Arcade Facilitator || Google Cloud Certified
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The final step is to choose the type of Fibre Channel switch that will be used in the network. There are several types of switches to choose from, such as edge switches, core switches, and director-class switches. In addition to these steps, there are several other factors that need to be considered when designing a Fibre Channel fabric for high availability and disaster recovery. These include factors such as network security, data backup and recovery, and disaster recovery planning

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4 Implement redundancy and failover

Redundancy and failover are the mechanisms that allow your FC fabric to continue operating in case of a failure or outage. To ensure this, you should use dual-port or multi-port servers and storage devices that can connect to multiple FC switches, multipathing software or protocols that can manage data traffic, and redundant power supplies, fans, and cables for your FC switches and devices. Additionally, you should configure redundant FC switches in the core and edge of your fabric in pairs or clusters, use zoning and masking to isolate and protect your FC devices and data, and employ monitoring and alerting tools to detect any failures or issues.

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5 Plan your disaster recovery strategy

A disaster recovery strategy is a plan that outlines how to restore data and resume operations in the event of a disaster that affects the primary data center. This strategy typically involves replicating data to a secondary site, either synchronously or asynchronously, and switching to the secondary site if the primary site is unavailable. To plan your disaster recovery strategy for your FC fabric, there are several aspects to consider such as the location and distance of the secondary site from the primary site, the bandwidth and latency of the network connection between sites, and the type and frequency of data replication. Additionally, you should think about the type and level of data consistency and integrity between sites, the type and mode of failover and failback between sites, and the type and scope of testing and validation for your disaster recovery plan. By following these steps, you can design a FC fabric that provides high availability and disaster recovery for your data center. You can also optimize and improve your FC fabric over time by monitoring its performance, updating its firmware and software, or adding or replacing components as needed.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can you design a fibre channel fabric for high availability and disaster recovery?

1

2

3

4

5

6

1 Understand your requirements

2 Choose your FC topology

3 Choose your FC switch type

4 Implement redundancy and failover

5 Plan your disaster recovery strategy

6 Here’s what else to consider

Computer Networking

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How can you design a fibre channel fabric for high availability and disaster recovery?

1

2

3

4

5

6

1 Understand your requirements

2 Choose your FC topology

3 Choose your FC switch type

4 Implement redundancy and failover

5 Plan your disaster recovery strategy

6 Here’s what else to consider

Computer Networking

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