The Best RAID For NAS

We are living in a technological world, and in the past few years, many advancements are made in the field of information technology. The world is evolving at such a rapid speed that everybody wants more advanced techniques to use, and when we talk about the data storage devices and laptops, they have their importance. There are many tools available in the market to keep your data safe and secure. Data stores in the hard drive of a computer and laptop, and you must have to take data backup to prevent any loss. In this modern world, RAID and NAS are two of the most used and reliable data storage devices. Both of these devices used to store data at multiple places to make it secure. One of the other important things here is that RAID and NAS are two different devices. No doubt, both of these used to store essential data as they are reliable and there is less chance of data loss. Nas and Raid are extremely sophisticated and hard when to recover data in case of data loss which is why you need professional NAS data recovery company in case that happens. While there are also many changes in these two devices. Here we bring a brief comparison between these two devices and tell you about the best RAID for NAS.

Redundant Array of Independent Disks (RAID):

A redundant array of independent disks which is generally known to be as RAID is a fusion of disk arrays that are resultantly operating as one super drive. As time passes, there is a need for more and more space to store your data for which you must need multiple storage devices. That is the point for which RAID designed and made. Yes, you are reading right, as it develops in such a way that it will give you maximum performance and redundancy in data storage. Adding more and more drives for the storage purpose would become a hectic and costly process. But you don’t have to worry anymore as RAID is here for you with much cheaper compared to other storage environments like JBOD. What else should one need? Moreover, the RAID can also deploy into two main types. One type is called a hardware raid, which you can call as raid-on-chip, and the other type is known as software raid, which you can request to be an as software-only or hybrid raid.

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Software RAID Vs Hardware RAID: A Tutorial | Liquid Web

What is RAID?

RAID (or a Redundant Array of Inexpensive Disks) is a way of storing logical data across a medium which is composed of multiple physical hard disk drives blended into one or more logical units or volumes that is used for data redundancy, performance improvement, and reliability.

In this article, we will review what a RAID is, what it consists of, its types (Software and Hardware RAID), storage methods as well as their advantages and disadvantages.

In a specific sense, RAID uses an array of several drive disks which creates a fault-tolerant and high-available arrangement of disks using mirroring or striping. Mirroring is defined as storing files on a set of drives in the server that have been copied in an identical manner across several drives. Striping (or alternation) is defined as storing split files into multiple parts which alternate across the disks. In some RAID configurations, both mirroring and striping is used.

The distinctions in the ways of using mirroring, alternation, and parity management define different RAID levels. Let’s overview them:

• RAID 0 – productive disk array with file alternation but not failure tolerant
• RAID 1 – mirroring disk array
• RAID 5 – disk array characterized by block-level striping and an absence of dedicated parity disk
• RAID 10 – RAID 0 array made of RAID 1 arrays

There are several other RAID levels, but the most popular are listed here. RAID arrays are very popular in designing SAN’s or NAS devices.

What is RAID Parity?

Certain RAID methods use what is called a parity bit which is a common method of error detection during the transmission and storage of data on the array. Parity adds a checksum to the data being shared to a target drives to ensure the data is as close as possible to be indistinguishable from the data on source drives. RAID 5 primary uses parity in its methodology.

Software RAID

It’s important to remember that a RAID controller is at the core of the RAID system. It plays a vital role in data distribution among RAID disk arrays including both Software and Hardware RAID.

Software RAID uses the functionality of the RAID software or the RAID driver built in to the servers operating system. This method does not require any additional equipment to connect storage devices. It can however increase the overall processing load on a server and possibly slow RAID calculations, and other processes being carried out on the device.

Many server operating systems support RAID configuration, including ones from Apple, Microsoft, and various versions of Unix/Linux systems. Quite often, Software RAID depends on the operating system being used, so it’s not recommended for the divisions which are shared by multiple operating systems.

Advantages

• Most operating system support RAID Software configurations which makes it easier to set up and accomplish configuration tasks which solves different issues
• Software RAID installation is much cheaper as it does not require and additional hardware equipment
• Software RAID is mainly suitable for processing simple RAID 0, RAID 1, and RAID 10, which does not cause additional system load
• We can implement a RAID configuration on one operating system (e.g. Ubuntu) and use it across other like systems
• RAID level re-configuration is possible as the settings are flexible and not complicated.

Disadvantages

• Software RAID can significantly influence general system load while carrying out a complicated RAID configuration
• Software RAID implementation is not useful if there are multiple drivers installed on the system, as some conflicts could occur
• Some operating systems support only a limited type of levels of RAID (such as RAID 3, 4, 6, 50, 60, etc.)
• There is limited opportunity to use RAID on a clustered operating system
• Software RAID can be vulnerable to viruses and other malware as it operates within the primary servers operating system
• System failures on the server can have a negative influence on data integrity
• Replacement of failed disk can be complicated

Having looked into Software RAID and some of its advantages and disadvantages, we can conclude that this method can be used for small projects with a limited budgets and when computing power, maximum data safety, and speedy data and disks recovery are not priorities.

Also, it’s essential to keep in mind that these are only general recommendations as the choices will depend on project needs and the tasks which are required to be accomplished.

Hardware RAID

Hardware RAID is the method where all the drives are connected to a hardware RAID controller, which is on a separate RAID card, different server, or built into a motherboard. Hardware RAID controllers physically manage RAID arrays, configurations and support multiple RAID levels. In some cases, the RAID controller can act as a mini version of a computer as they come with dedicated processors to carry out their tasks.

During the Hardware RAID installation process, drives connect to the RAID controller board. This applies not only for large servers but also for desktop computers. Processing Hardware RAID refers to discrete controllers (such as ATA RAID, SATA, DELTA PLC, etc.) on the level of the disk’s storage system.

Because the RAID is managed by and processed on the controller board, there is no additional load on the server processor. Utilizing Hardware RAID also has many other extended functionalities, including a hot swap disk option in case of any one single disk failures. Additionally, Hardware RAID is more expensive than Software RAID, but it has higher productivity and functional compatibility.

Advantages

• High level of system productivity is especially essential for old systems with limited resources to increase computing power
• Hardware RAID uses its cache-memory for making a backup copy and data recovery
• There are fewer issues with RAID systems during the creation of a backup copy and data recovery
• Flexibility while configuring RAID, which is complicated to realize without equipment
• Protection from data loss and corruption may occur if there’s a power outage during the creation of a backup copy as Hardware RAID uses backup batteries and its built-in flash memory
• Works well on all types of disks
• Easy to move the box between computers, servers, and OS
• Compatibility with various OS
• Additional RAID levels (such as RAID 5, 6, 50, 60) can be used; however, they require more resources

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Procedure To Become An Air Hostess/Cabin Crew

Minimum educational required – 10+2 passed in any stream from a recognized board.

The age limit is 18 to 25 years. It may differ from one airline to another!

 

Physical and Medical standards –

• Females must be 157 cm in height and males must be 170 cm in height (for males). This parameter may vary from one airline toward the next.
• The candidate's body weight should be proportional to his or her height.
• Candidates with blemish-free skin will have an advantage.
• Physical fitness is required of the candidate.
• Eyesight requirements: a minimum of 6/9 vision is required. Many airlines allow applicants to fix their vision to 20/20!
• There should be no history of mental disease in the candidate's past.
• The candidate should not have a significant cardiovascular condition.

You can become an air hostess if you meet certain criteria, such as a minimum educational level, an age limit, language ability, and physical characteristics.

As can be seen from the preceding information, a 10+2 pass is the minimal educational need for becoming an air hostess in India. So, if you have a 10+2 certificate from a recognized board, you are qualified to apply for an interview for air hostess positions!

You can still apply for this job if you have a higher qualification (such as a Bachelor's or Master's Degree).

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Email:     info@aerofly.co.in

 

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FAQs On a Udemy clone app That You Should Know Before Buying!

BSETEC's Udemy clone app based on formalized teaching but with the help of electronic resources is known as E-learning.E-learning, also referred to as online learning or electronic learning, is the acquisition of knowledge which takes place through electronic technologies .

Udemy, which was founded more than a decade ago, has established itself as a global leader in the online teaching industry. People in our digital era rely on technology and devices for nearly everything, including education. When it comes to online learning, or eLearning, which is regarded as a lifesaver– capable of sustaining the educational environment even during the Covid-19 pandemic– it has evolved into a platform bursting with potential, not only for students but also for tutors, educators, and instructors. Furthermore, when compared to traditional educational techniques, the flexibility and customization given by online tutoring software like Expertplus LMS are unrivalled. As a result, it is gradually becoming an important component of the learning process, which is why eLearning is here to stay– even after the epidemic has passed, it is a huge increase in the number of eLearning applications and websites, and most businesses are choosing for Udemy Clone App instead of starting from scratch.

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How can I get started with your own online tutoring company?

To use the Udemy Clone App script to establish an online tutoring marketplace similar to Udemy, bear the following factors in mind:

• How to define your target audience?– Before you start developing your Learning Management System, you should think about who you're going to serve, what their background is, what kind of job they want to do, and what their career goals are. These are all things to consider before you begin the development process. As a result, you must be clear about who you are developing your app for.
• Why have a clear set of goals and objectives in mind?– If you're creating an app for eLearning, you should have a solid strategy and set of goals in mind. You can't simply take a leap of faith and draw conclusions. You must have both long and short term objectives, and you must put them into action.
• Why create a simple and speedy registration process?– No one wants to spend more than a minute or two on a signup screen, especially if the app is intended for educational reasons. As a result, it's critical that the user registration, login, and signup procedure be simple and quick. It should provide one-tap or social login options so that the AI can read the social account and fill in the data on its own.
• Why have a visually appealing homepage– "The first impression is the final impression" and "The last impression is the enduring impression" are two prominent expressions. When you initially open the app, the first thing that appears on your screen is the homepage, and if it isn't appealing enough, you will most likely not want to use it. As a result, the user interface must be simple to use and appealing to the eye.
• Why do we alter and revise– Once you've begun creating the app, you can customise and revise it to meet the needs of your users, thanks to the Udemy Clone Script's high level of customization and a large range of templates and motifs to select from.

If you want to develop a platform with high-quality eLearning features that cater to the needs of a large mass of audience, then opt for ExpertPlus LMS, and contact BSEtec now! Hurry!

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Best Electric Bikes and Scooters for Rental Business or Campus Facility

The electric scooter revolution has caught on super-fast taking many cities across the globe by storm. eScooters, a renovated version of old-school scooters now turned into electric vehicles are an environmentally friendly solution to current on-demand commute problems. They work on engines, like cars, enabling short traveling distances without hassle. The result is that these groundbreaking electric machines can now provide faster transport for less — cheaper than Uber and faster than Metro.

Since they are durable, fast, easy to operate and maintain, and are more convenient to park compared to four-wheelers, the eScooters trend has and continues to spike interest as a promising growth area. Several companies and universities are increasingly setting up shop to provide eScooter services realizing a would-be profitable business model and a ready customer base that is university students or residents in need of faster and cheap travel going about their business in school, town, and other surrounding areas.

Electric Scooters Trends and Statistics

In many countries including the U.S., Canada, Mexico, U.K., Germany, France, China, Japan, India, Brazil and Mexico and more, a growing number of eScooter users both locals and tourists can now be seen effortlessly passing lines of drivers stuck in the endless and unmoving traffic.

A recent report by McKinsey revealed that the E-Scooter industry will be worth― $200 billion to $300 billion in the United States, $100 billion to $150 billion in Europe, and $30 billion to $50 billion in China in 2030. The e-Scooter revenue model will also spike and is projected to rise by more than 20% amounting to approximately $5 billion.

And, with a necessity to move people away from high carbon prints, traffic and congestion issues brought about by car-centric transport systems in cities, more and more city planners are developing more bike/scooter lanes and adopting zero-emission plans. This is the force behind the booming electric scooter market and the numbers will only go higher and higher.

Companies that have taken advantage of the growing eScooter trend develop an appthat allows them to provide efficient eScooter services. Such an app enables them to be able to locate bike pick-up and drop points through fully integrated google maps.

List of Best Electric Bikes for Rental Business or Campus Facility 2020:

It’s clear that e scooters will increasingly become more common and the e-scooter business model will continue to grab the attention of manufacturers, investors, entrepreneurs. All this should go ahead with a quest to know what are some of the best electric bikes in the market especially for anyone who would want to get started in the electric bikes/scooters rental business.

We have done a comprehensive list of the best electric bikes! Each bike has been reviewed in depth and includes a full list of specs and a photo.

Billy eBike

 https://www.kickstarter.com/projects/enkicycles/billy-were-redefining-joyrides

To start us off is the Billy eBike, a powerful go-anywhere urban electric bike that’s specially designed to offer an exciting ride like no other whether you want to ride to the grocery store, cafe, work or school. The Billy eBike comes in 4 color options – Billy Blue, Polished aluminium, Artic white, and Stealth black.

Price: $2490

Available countries

Available in the USA, Europe, Asia, South Africa and Australia.This item ships from the USA. Buyers are therefore responsible for any taxes and/or customs duties incurred once it arrives in your country.

Features

• Control – Ride with confidence with our ultra-wide BMX bars and a hyper-responsive twist throttle.
• Stealth- Ride like a ninja with our Gates carbon drive that’s as smooth as butter and maintenance-free.
• Drive – Ride further with our high torque fat bike motor, giving a better climbing performance.
• Accelerate – Ride quicker with our 20-inch lightweight cutout rims for improved acceleration.
• Customize – Ride your own way with 5 levels of power control. Each level determines power and speed.
• Flickable – Ride harder with our BMX /MotoX inspired geometry and lightweight aluminum package

Specifications

• Maximum speed: 20 mph (32 km/h)
• Range per charge: 41 miles (66 km)
• Maximum Power: 500W
• Motor type: Fat Bike Motor: Bafang RM G060.500.DC
• Load capacity: 300lbs (136kg)
• Battery type: 13.6Ah Samsung lithium-ion,
• Battery capacity: On/off-bike charging available
• Weight: w/o batt. 48.5lbs (22kg), w/ batt. 54lbs (24.5kg)
• Front Suspension: Fully adjustable air shock, preload/compression damping /lockout
• Rear Suspension: spring, preload adjustment
• Built-in GPS

Why Should You Buy This?

• Riding fun and excitement
• Better climbing ability and faster acceleration.
• Ride with confidence
• Billy folds for convenient storage and transportation.
• Shorty levers connect to disc brakes ensuring you stop on a dime
• belt drives are maintenance-free and clean (no oil or lubrication needed)

**Who Should Ride Billy? **

Both new and experienced riders

**Where to Buy? **Local distributors or ships from the USA.

Genze 200 series e-Bike

 https://www.genze.com/fleet/

Featuring a sleek and lightweight aluminum frame design, the 200-Series ebike takes your riding experience to greater heights. Available in both black and white this ebike comes with a connected app, which allows you to plan activities, map distances and routes while also allowing connections with fellow riders.

Price: $2099.00

Available countries

The Genze 200 series e-Bike is available at GenZe retail locations across the U.S or online via GenZe.com website. Customers from outside the US can ship the product while incurring the relevant charges.

Features

• 2 Frame Options
• 2 Sizes
• Integrated/Removable Battery
• Throttle and Pedal Assist Ride Modes
• Integrated LCD Display
• Connected App
• 24 month warranty
• GPS navigation
• Bluetooth connectivity

Specifications

• Maximum speed: 20 mph with throttle
• Range per charge: 15-18 miles w/ throttle and 30-50 miles w/ pedal assist
• Charging time: 3.5 hours
• Motor type: Brushless Rear Hub Motor
• Gears: Microshift Thumb Shifter
• Battery type: Removable Samsung 36V, 9.6AH Li-Ion battery pack
• Battery capacity: 36V and 350 Wh
• Weight: 46 pounds
• Derailleur: 8-speed Shimano
• Brakes: Dual classic
• Wheels: 26 x 20 inches
• Frame: 16, and 18 inches
• Operating Mode: Analog mode 5 levels of Pedal Assist Thrott­le Mode

Norco from eBikestore

 https://ebikestore.com/shop/norco-vlt-s2/

The Norco VLT S2 is a front suspension e-Bike with solid components alongside the reliable Bosch Performance Line Power systems that offer precise pedal assistance during any riding situation.

Price: $2,699.00

Available countries

This item is available via the various Norco bikes international distributors.

Features

• VLT aluminum frame- for stiffness and wheel security.
• Bosch e-bike system – for their reliability and performance.
• E-bike components – for added durability.
• Hydraulic disc brakes – offer riders more stopping power for safety and control at higher speeds.
• Practical design features – to add convenience and versatility.

Specifications

• Maximum speed: KMC X9 9spd
• Motor type: Bosch Active Line
• Gears: Shimano Altus RD-M2000, SGS, 9 Speed
• Battery type: Power Pack 400
• Battery capacity: 396Wh
• Suspension: SR Suntour suspension fork
• Frame: Norco VLT, Aluminum, 12x142mm TA Dropouts

Bodo EV

http://www.bodoevs.com/bodoev/products_show.asp?product_id=13

Manufactured by Bodo Vehicle Group Limited, the Bodo EV is specially designed for strong power and extraordinary long service to facilitate super amazing rides. The Bodo Vehicle Company is a striking top in electric vehicles brand field in China and across the globe. Their Bodo EV will no doubt provide your riders with high-level riding satisfaction owing to its high-quality design, strength, breaking stability and speed.

Price: $799

Available countries

This item ships from China with buyers bearing the shipping costs and other variables prior to delivery.

Features

• Reliable
• Environment friendly
• Comfortable riding
• Fashionable
• Economical
• Durable – long service life
• Braking stability
• LED lighting technology

Specifications

• Maximum speed: 45km/h
• Range per charge: 50km per person
• Charging time: 8 hours
• Maximum Power: 3000W
• Motor type: Brushless DC Motor
• Load capacity: 100kg
• Battery type: Lead-acid battery
• Battery capacity: 60V 20AH
• Weight: w/o battery 47kg

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