Explain the cut-through architecture including its advantages and disadvantages. The advantages and disadvantages of cut-through architecture are as follows, Advantage Cut-through architecture lets the data frame enter into and exit from thecut-through switch at almost same time. The cut-through switches forwards data without storing it in contrast with traditional store-and-forward switches. Those switchesstores the whole frame for a minimum time to examine various fields of the data frame.
As a business owner, you have many features to consider when choosing the right system and infrastructure for your critical online applications. One of the features you have to consider when choosing the right server for your business is whether to enable RAID on your system, but more importantly, what type of RAID to choose to fit your technical needs.
Below we will go through all the pros and cons of each RAID level and give suggestions on which type to choose for your set up. RAID, short for redundant array of independent originally inexpensive disks is a disk subsystem that stores your data across multiple disks to either increase the performance or provide fault tolerance to your system some levels provide both.
There are two ways of implementing the system. Software raid and hardware raid. Hardware raid is directly managed by a dedicated hardware controller to which the disks are connected.
The raid calculations are managed by an on-board processor which offloads the strain on the host processor CPU.
HW controllers do provide an extra failsafe element with its BBU Battery Backup Unit that protects your data in case of an unexpected power loss to the server. It does not require the use of an additional often costly piece of hardware and the proprietary firmware. Here is a list of the most used RAID levels: RAID 0 Disk striping: RAID 0 splits data across any number of disks allowing higher data throughput.
An individual file is read from multiple disks giving it access to the speed and capacity of all of them. This RAID level is often referred to as striping and has the benefit of increased performance.
However, it does not facilitate any kind of redundancy and fault tolerance as it does not duplicate data or store any parity information more on parity later.
Both disks appear as a single partition, so when one of them fails, it breaks the array and results in data loss. Minimum number of disks: Increased performance Write and read speeds. RAID 1 writes and reads identical data to pairs of drives. If any of the disks in the array fails, the system can still access data from the remaining disk s.
Once you replace the faulty disk with a new one, the data is copied to it from the functioning disk s to rebuild the array.
RAID 1 is the easiest way to create failover storage. Fault tolerance and easy data recovery. Higher cost per megabyte double the amounts of drives is required to achieve desired capacity.
Standard application servers where data redundancy and availability is important.y RAID is the method in which information is spread across several hard disk and maximize the ability to recover information in case of hard disk crash. Some Information about RAID technology Mirroring refers to copying of data to multiple hard disks.
ii. Striping refers to splitting of data across multiple hard disks.
iii. Advantages and Disadvantages of Warp Knitting Tricot and Raschel Machines - Download as Word Doc .doc), PDF File .pdf), Text File .txt) or read online. RAID 5 stripes data blocks across multiple disks like RAID 0, however, it also stores parity information (Small amount of data that can accurately describe larger amounts of data) which is used to recover the data in case of disk failure.
Jan 01, · The problem with AIDS in this country is not confined to one gender, age group, sexual preference, or race, but urban, black communities do have a much larger number of AIDS cases than other populations. The purpose of this paper is to discuss this issue and interlock three specific issues that deal with this epidemic.
What are the advantages and disadvantages of each form of market entry? Why might a company choose one over the other? A joint venture is a partnership between two or more people or businesses/companies who will share all expense, profit, loss expertise and control in a specific project.
The use of additional parity allows the array to continue to function even if two disks fail simultaneously. However, this extra protection comes at a cost. RAID 6 arrays have a higher cost per gigabyte (GB) and often have slower write performance than RAID 5 arrays.