First-person ( Marrow) Good evening classmates, last week let™s finish strong!   A single point of failure is where

First-person ( Marrow)

Good evening classmates, last week let’s finish strong!  

A single point of failure is where a vulnerability exists on your network  that can shutdown your company’s operation’s.  For example, if your organization’s border router fails and you do not have an alternate network route to reach critical cloud resources, the border router would be considered a single point of failure.

All networks should have built in redundancy in order to avoid single points of failure.  Most Cisco switching devices allow you to configure multiple trunk ports to enable routing through a different means.   In the event the primary line is cut the network traffic can be configured to reroute to another port on that device.  There may be some initial delays in the traffic, however the network will remain operational.

When conducting configuration back-ups, or saving data, RAID 5, is the most common RAID to use.  This RAID allows for data to be spread across multiple disk drives so in the event a drive fails, access to the data will remain, while the failed drive is being replaced or rebuilt and added back to the array of disks.

Load balancing is a concept of managing and routing network traffic in order to avoid bogging down a device and improving network performance.  This allows devices to perform at an optimum level.  In the past when implementing defense in depth, load balancing was a concept we used when strategically placing our routers and firewalls.  We avoided configuring one device to handle all traffic.  The configurations were made to ensure each device  handled certain types of traffic efficiently then passed the packet to the next device.
Overall, fault tolerance must be built into all networks. The availability and recovery of data is very important to an organization’s ability to stay operational. It must be included in the planning process and remain a priority after completion and implementation of the network.

Second person ( Carter)

Good day everyone,

I just want to take the time to congratulate all of us for successfully finishing another semester. One step closer to our goal! Single point of failure can be described as something inside a network system that can ultimately enable the whole system to crash and fail if that said “something” also fails. Examples of single points of failure include:

  • Disk – If a single drive that is being used on a server fails then the entire system can crash
  • Server – This is where the failure of service exists and halts the service
  • Power – If a business holds only one power source, then that power is a single point of failure

Providing fault tolerance in a larger network system is called redundancy. However, redundancy alone does not guarantee fault tolerance. In other words, redundancy is one way of gathering a result, and fault tolerance is that said result. A redundant array of independent disks or RAID for short can be described as a system of data that utilizes more than one hard disk to hold that data. RAID is a commonly used system that holds high-volume storage of data. RAID storage should be possible in various ways. Some RAID types underline execution, others dependability, adaptation to non-critical failure or blunder revision. Which type you pick relies upon what you’re attempting to achieve. For most RAID types, information on a bombed plate can be revamped consequently without the server or the framework truly being closed down. Load balancing arrangements permit an application to run on various organization hubs, eliminating the worry about a weak link. Most burden balancers additionally improve responsibility conveyance across various figuring assets, making them separately stronger to action spikes that would somehow cause log jams and different interruptions. I hope everyone is well and stays safe.



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