With the rise of modern workloads namely cloud infrastructure, media repositories, data analytics, backup and restore systems require a massive storage solution to manage critical business data. To cater such needs, Ceph storage comes with a scalable, open, software-defined storage platform. Ceph has the ability to transform your organization’s IT infrastructure by freeing you from the expensive lock-in of proprietary to manage the vast amount of data. Let’s explore in detail what is Ceph storage.
What Is Ceph?
Ceph is an open-source, unified, distributed software storage solution that provides a scalable and reliable clustered storage solution under one whole system. To run on a commodity hardware, storage clusters of Ceph are designed based on an algorithm known as CRUSH (Controlled Replication Under Scalable Hashing). This algorithm enables the even distribution of a large amount of data across the right clusters and sub-clusters. Such division of data simplifies the large data storage mechanism and also enables hassle-free data retrieval.
Ceph’s functioning as a storage system is made quite simple by making use of an object-based storage, block-based storage, and file system.
It is possible to mount Ceph as a block device and can be attached to virtual machines or bare-metal Linux-based servers. The block component is known to be Reliable Autonomic Distributed Object Store (RADOS), which can provide block storage capabilities such as snapshots and replication. RADOS is integrated with OpenStack Block Storage to work as a back end.
Let’s take a look at the benefits of block-based storage
- Potential to scale with Linux or other virtual machines
- Thinly provisioned
- Read-only and revert to snapshots
- Resizable images
Client applications possess the ability to directly access the RADOS object-based storage system through Ceph’s software libraries. Ceph object-based storage is an interface raised on the apex of librados to proffer applications with a tranquil gateway to Ceph storage clusters.
Let’s explore the interfaces supported by Ceph object storage
The object storage functionality is compatible with a large subset of the OpenStack Swift API.
The object storage functionality that is compatible with a large subset of the Amazon S3 REST API.
Ceph’s file system provides object storage and block device interfaces by running on the top of same object storage system. The file storage of Ceph makes use of a compliant Ceph file system known as Portable Operating System Interface (POSIX) to store data in a Ceph storage cluster.
The metadata server cluster of Ceph carry out the function of mapping the directories and file names of the file system to objects stored within RADOS clusters. As metadata server cluster can expand or contract, they guarantee high performance by hindering heavy work loads on cluster hosts.
Let’s have a look on the benefits of Ceph’s file system
- Automatic balancing of a file system to ensure maximum performance
- Virtually unlimited storage
- Guaranteed data security for critical applications
- No customization is required to use file system CEPH FS with POSIX
How Is Ceph Storage Beneficial For Emerging IT Infrastructures?
To cope with the exponential data growth, organizations are on a massive search mission to find a solution that can effectively store large volumes of data at a reasonable cost. Read the rest of the article to know how Ceph storage is beneficial for emerging IT infrastructures deploying a cloud technology.
Easy to Manage
Ceph facilitates to invariably scale without affecting the organization’s capital and operational expenditures. Starting from cluster rebalancing to error recovery, Ceph dumps work from clients by making use of distributed computing power of Ceph’s OSD. A Ceph node is incorporated with a commodity hardware, intelligent daemons, and Ceph storage clusters. They effectively replicate and dynamically re-distribute data through an effective communication. Ceph monitors continuously monitor these nodes to ensure high availability.
Scalable Storage Solution
Data distribution and replication is made possible by adopting a scalable storage solution. During data distribution, a hash function maps the objects into placement groups. They then use CRUSH to assist OSD’s in storing object replicas. Data is replicated in a phase of these placement groups each of which is mapped to an ordered list of OSDs.
Ensures Data Safety and Recovery
Ceph storage ensures data safety by safely replicating the data updates on a disk to tackle any sort of failures. Ceph monitoring promptly detects and resolves the abnormalities experienced in the distributed environment. In addition to the safe data storage, Ceph also recovers clusters of data quickly.
To conclude, on the whole Ceph offers a holistic storage system by effectively addressing the scalability, reliability and performance issues and that’s why it is being widely chosen among the web hosting providers and businesses.
With the constant advancements in technology choosing a right option for building powerful and dynamic web applications is surely a tedious task. As we know, Linux, Apache web server, MYSQL database, Perl, Python or PHP posses a powerful platform comprising their own features. Won’t it be great, if there exists a platform which makes use of the above-said items together? LAMP technology is one such technology which has gained popularity over the recent years. With its power packed potential resources, it’s surely the most popular choice of web development among the web developers.
What is LAMP?
Linux based web servers comprises of an arrangement of four software components that form a software stack. These components are arranged in layers to build a powerful web application platform. This grouping empowers the websites and web applications to run on the top of this hidden stack. LAMP software is an open-source platform which uses Linux as its operating system, Apache as a web server, PHP as the object-oriented scripting language and MySQL as the relational database management system. Most of the Linux distributions fabricate the LAMP stack components in default.
Linux sets the foundation of the stack model and doesn’t require any specific distribution to put up a LAMP stack on a server. The commonly used distributions include Ubuntu, CentOS, Debian as they offer a wide range of online guide to support users.
The next layer is occupied by the most popular open-source web server on the internet. It has a modular design which includes a support to bind up with the web programming languages and modules for a wide range of extensions.
You should note that MariaDB is replacing MySQL in many LAMP deployments as there are cases where you will be using software that explicitly requires MySQL.
PHP sits on the top of the stack and it effectively simplifies the creation of dynamic web pages.
Working Of LAMP Stack
Apache web server is responsible for handling the web page requests coming in from the browsers. If it is a PHP file request, web server passes the request to PHP which loads the file and executes the code within the file. PHP communicates with the MySQL to fetch or store if the code makes any reference to the data stored in the database. PHP can effectively create HTML required by the web browser to render the web page using the code in the file and data from the database. As soon as PHP completes running the code in the file, it passes the resultant data to the Apache web server to send back to the browser. These operations are included by default in the Linux operating system beneath the server.
How LAMP Stack Benefits Your Business?
The most effective way to develop a simple to complex enterprise level web application is by using a LAMP as it holds customization, flexibility, and cost-effective, powerful security features.
- All the components in LAMP stack are open source software that is readily available in free
- You can develop and deploy LAMP-based projects without paying any license fees for distributing the software
- The use of PHP and MySQL facilitates quick error fixing and perform modifications as users have complete access to the source
Development and Deployment Simplicity
Powerful web applications can be built using LAMP technology with a simple code and it is easy to modify or extend the application as per your business requirements. Most of the hosting services provide standard LAMP based environments and can be deployed easily with no license fees and through Linux distribution such as Debian, Fedora etc
Unlike other technology suppliers, the LAMP stack does not limit your development options. It offers a complete flexibility to build and deploy applications considering your unique business needs.
As LAMP components are the open source they provide great customization features with a wide range of additional modules and functionality
LAMP technology is secure and stable. It possesses a powerful security feature to mitigate vulnerable attacks and if any error occurs it can be fixed quickly in a financially savvy approach.
A large number of experienced and good-minded people in the community are ready to offer a prompt support during the phase of development, deployment and so on.
Compared to other software packages, LAMP stack is economically savvy as it can be acquired at a comparatively low price.
In short, LAMP shines as an appropriate substitute to commercial packages and it operates as layered software programs that bestow an indispensable platform to develop and implement web-based applications and servers. A wide array of LAMP stack alternatives are available which includes LNMP or LEMP (Nginx web server instead of Apache), WAMP (Windows as OS instead of Linux), WIMP(Windows and Microsoft’s Internet Information Services web server) etc. All of these possess similar principles to use as an entirely open source solution, and the support for effortlessly installable versions with Linux distributions is an undeniable reward.
For an operating system to function efficiently, it should be synchronized with the various units in the system. There are chances of experiencing a system crash, eventually with a data loss when any of the units fail to connect. “Kernel Panic” is one such system crash.
On the off chance, if an operating system encountered a fatal error internally and unable to recover from it, then the operating system implements a safety measure known as “kernel panic” to stop the system from running and eliminating huge data loss. Majority of the users have come across this situation when a normal working system restarts all of a sudden and the work done since you last saved will be lost.
Causes For Kernel Panic
Kernel Panic can be caused by a number of reasons. Few suspected reasons have been mentioned below
- An inappropriate attempt by OS to read or write memory
- Improper installation of RAM chips
- Defective microprocessor chip
- Malware or software bugs
- Data corruption
- Hard-disk damage
How To Detect If It’s A Kernel Panic?
The term “Kernel Panic” is primarily applied to MAC OS X and UNIX based systems. In Windows, it is known as “general protection fault’, “blue screen of death” etc. Let’s explore how to detect a Kernel Panic in each of the operating systems.
On OS X 10.7 version and it’s earlier versions, the screen produces an alarm and fades to black containing a message to restart. In OS X 10.8 version and it’s later versions, the system simply restarts without any warning, followed by a message explaining the issue briefly.
On Linux systems, the operating system can deal with the serious error and continues to run known as Kernel Oops. Eventually, instability occurs and lead to Kernel panic displaying a black screen full of code.
On Windows you will find the whole screen turned blue, displaying a message to restart the computer.
Kernel Panic Troubleshooting
A log will be created containing the information of what occurred at each occurrence of a kernel panic. Even though the information is incomprehensive to the normal users, the technicians can effectively diagnose and resolve the issues considering then the information in the log.
Let’s explore how to troubleshoot a few common causes
In order to diagnose the software issues, you need to boot into Safe mode to load the core elements of an operating system. Linux doesn’t have a safe mode but a recovery partition. In Windows, you could boot into safe mode by holding F8 when restarting, whereas, in Mac, you need to hold the shift key after the occurrence of a startup chime.
Let’s have a look on how to troubleshoot the software issues
Keep Your System and Software Updated
Always keep an eye on the updates announced frequently. Make sure that your operating system including the drivers has updated to the latest version and also the software. Check for the programs that are launching on boot and disable the ones which you have installed shortly before the occurrence of kernel panic and then re-enable.
Make Use Of System Restore
The unsaved changes made to the system will be lost on the occurrence of Kernel panic. Hence it is vital to use Time Machine or System Restore to roll back to the state before Kernel panic occurred.
A key to effectively identify the exact cause of kernel panic is to identify the recent changes to your system, undoing the changes and then try re-enabling one by one.
Look For Disk Errors
To ensure disk errors are not causing a Kernel panic, you need to run the disk repair software built into your computer’s OS. As soon as your computer boots, if it crashes you have to boot into the recovery partition. To do this press Command + R on Mac and F10 on Windows. You can carry out booting from a disk or USB.
If you have upgraded the RAM on your system recently, check if is placed properly. Try removing the RAM if the problem still continues and if the issues are resolved, you should understand that the RAM is faulty and you have to contact the retailer.
Often we believe that large add-ons alone cause issues. But Kernel panic can happen even if there is a fault in your USB. You can re-connect the peripherals confirming if there is no fault.
Kernel panics are common and you will be experiencing it time to time. If you experience them on a regular basis, then it is obvious that the recent changes done to the system has caused it. However it’s not a wider problem and as long as you’re prepared to deal with it, it is easy to diagnose and resolve.
For any business, be it a small, medium or large business, data is considered to be a valuable asset. Entrepreneurs are very keen in choosing a right system and infrastructure to manage their online applications but they fail to implement a system for data protection. A data loss equals a business loss. Hence, entrepreneurs should ensure data protection by adding RAID to the storage configuration.
Why Is RAID So Important?
Every business need to store an enormous amount of client data, confidential information and many more. If you are storing them in a multiple drive without utilizing RAID, there are chances of data loss due to a disk failure. You may defend telling, you have a regular backup. Still, there are chances of backup failure due to a sudden unpredicted failure the in hard drive. Implementing RAID is an indispensable option to ensure data protection and data accessibility without interruption.. RAID additionally serves as a performance booster too.
Things To Consider When Choosing A RAID Level
There a wide range of RAID levels with different functionalities. It is important to choose a right RAID level considering your business requirements. Choosing a wrong RAID level might land you in trouble. Let’s explore the criterias to be considered when choosing a RAID level.
Each RAID level incorporates different net usable space after accounting for RAID overhead. If capacity is your primary concern, you should be keen in choosing a right RAID level.
Each application on your system is unique and set for a different purpose. Hence, it is important to choose a RAID level that matches your workload.
Choose a suitable level that matches your system availability requirements, if your business is keen in ensuring less downtime.
A highly redundant array will be expensive whereas an average speed redundant array cost less. It is necessary to opt for an array that balances cost and performance.
You cannot opt for one-size-fits all approach when choosing RAID as one factor usually comes to the detriment of another. Some RAID levels can be utilized for performance but not for redundancy. Similarly, you can utilize some RAID levels for redundancy but not capacity and the functionalists differ in terms of cost too.
Let’s take a look on different RAID levels and how they cater your business requirements.
RAID 0 configuration offers maximum performance at low cost. As there is no RAID overhead all drives can be combined to a single logic disk. They also provide excellent capacity with 100% utilization. The main disadvantage of RAID 0 is that there is no data protection. A failure in a single drive results in a total data loss.
RAID 1 is commonly referred as disk mirror as it duplicates data in two seperate drives. Data is drive 1 is mirrored to drive 2. Since drive 2 maintains the clone of drive 1, capacity is utilized to 50% of the drives available. In short, RAID 1 ensures data protection, but no performance and capacity. RAID 1 is suitable if there are no capacity or performance requirements, but when the user requires 100% security for the data and this makes RAID 1 little expensive than RAID 0.
RAID 5 uses 3 or more drives in an array and also distributes parity data across all drives to improve reliability. RAID 5 outstands in the capacity as the parity drive always require one drive capacity less than the total number of drive in the configuration. It is possible to retrieve data from other drives if any one of the drives fails. However, it is not possible to recover the data, if there is a failure in both the drives. RAID 5 offers a great performance when reading data. On the other hand, low performance while writing as the system should be done with the writing of data block and parity data, right before the completion of an operation. Due to its high performance and reliability, it is expensive than RAID 0 and RAID 1.
As the name suggests, RAID 10 is a combination of RAID 0 and RAID 1 offering the benefits of RAID 0 in terms of performance and RAID 1 in terms of reliability. It is to be noted that RAID 10 is expensive as it needs a maximum of 4v drives and capacity utilization is 50% of the available drives. Overall it offers great performance and data protection with zero parity calculations.
RAID 60 is more or less similar to RAID 50 except it offers more redundancy. It is useful for very large capacity servers, especially for those do not require backup.
If you’re still confused to choose a suitable RAID level for your business here are a few simple tips. As RAID 0 offers no data protection and RAID 1 performs slower than RAID 5, 6, 10 they do not suit business needs. RAID 5 and RAID 6 are ideal for small to medium business where you can enjoy the increased performance and storage configurations at low cost. RAID 10 is a good option for a large business with a large budget and you can enjoy maximum benefits.
The scale of memcached DDoS attacks are becoming larger day by day, more frequent and complex. A Distributed Denial of Service (DDoS) attack is a cyber attack to make an online service blocked off by overwhelming a target website with fake traffic from numerous sources known as a botnet. It is an explicit attempt by attackers to prevent legitimate use of a service hosted on high-profile web servers such as payment gateways, banks, social media etc.
A DDoS attack can lead your business to an end make it to go offline in mere minutes causing a havoc to the business notoriety, expensive downtimes and income misfortune. It is hard to recognize the exact reason behind DDoS attacks because the systems that send false traffic are controlled by the sources cannot be identified. However, business runners can experience a piece of mind with a viable cure through DDoS Protected VPS.
DDoS Protected VPS
DDoS protected VPS comes with the DDoS mitigation deployment known as Anti DDoS VPS which are situated on a data center capable of high transmission that is hardened against DDoS attacks.
A good DDoS Protected VPS should be able to withstand the common types of DDOS attacks listed below.
- Fake traffic attacks
- Applications or server attacks
- Protocol-based attacks
As the quote tells “prevention is better than cure”, is it not a good idea to be aware of the real risk of suffering a DDoS attack, before you opt for ant anti-DDoS solution.
The attackers illegally gain access to your network and loot sensitive data. To deal with such attacks, server security audit and multiple backups of critical data are indispensable.
Threat to Customer Loyalty
In the competitive market, network and web service availability are basic for keeping up the the customer loyalty and to acquire new customers. DDoS attacks simply target the critical infrastructure causing a negative impact in the network performance which thus prompts to a loss of existing customer base and business development.
Cyber criminals threatens to block access to a particular service or website if a requested ransom is not paid.
One of the indispensable points for a business success lies in the reputation of the brand. When an organization fails to offer the services reliably, it is obvious that the customers lose their trust in your brand and this may degrade your notoriety in the business world.
In the online era, without a doubt, online business is a major source of revenue. If your web applications or services stopped responding amid the peak sales hour, a day or for a month, imagine the amount of revenue in the event that you went under an attack from a DDoS.
In short, A DDoS attack can lead your business to an end make it go offline in mere minutes causing a havoc to the business notoriety, expensive downtimes and income misfortune. It is hard to recognize the exact reason behind DDoS attacks because the systems that send false traffic are controlled by the sources cannot be identified. However, business runners can experience a piece of mind with a viable cure through DDoS Protected VPS.
DDos Attacks That Can Be Stopped With DDoS Protected VPS
DDoS protected VPS is the most reliable solution to eliminate DDoS attacks from disrupting your systems. Let’s look through the most prominent types of attacks which can be ended with a DDoS Protected VPS.
An HTTP flood attack is a kind of volumetric DDoS attack intended to overwhelm a targeted server with HTTP requests.
The attackers send a large number of UDP packets to the targeted server with the aim of overwhelming the device’s ability to process and respond.
A SYN flood attack is carried out by repeatedly sending initial connection request (SYN) packets to a targeted server machine, eventually the attacker will be able to overwhelm all available ports, causing the targeted device to respond to authorized traffic slowly or not at all.
Slowloris is a highly-targeted attack carried out by holding as many connections to the target web server open for as long as possible, where one web server is used to take down another server, irrespective of affecting the other services or ports on the target network.
In NTP amplification attacks, the attacker uses publicly accessible Network Time Protocol (NTP) servers to overwhelm a targeted server with UDP traffic.
Ping of Death
The attackers send multiple malformed or malicious pings to the computer in the “ping of death” attack.
As we know, DDoS attacks have become regrettably prevailing and they are frequently used for disrupting business eventually leading to revenue loss. Regardless of whether you have utilized different measures to alleviate the various effects of DDoS attacks, you will find that it remains tedious and exorbitant to truly deal with such attacks. A DDoS Protected VPS is the best option to stay without troubles. As it protects your VPS against the most well-known attacks, you can absolutely restless demanding and stress-free.
The server functions as a brain in your application environment. Today’s world of technological era has witnessed a lot of business, using server platforms to achieve smart backup, data security, data and application sharing etc. Hence it has become indispensable to monitor the performance of your server and respond to the abnormalities as they show up. Maintaining the server performance is a tedious task as server burn up energy and you need to update your server to see a major distinction in speed and performance. To be practical, upgrading to a new server is not affordable at all times and implementing few effortless changes leads to a big difference in performance.
On the off chance that you think you cannot afford more on another server to witness a better performance, you may begin by implementing the techniques mentioned in this article rather than spending more to something you may not require.
Detect Hardware Errors
Ensure that you review the logs periodically to detect any occurrence of network failure, overheating issues etc which signals the hardware problems.
Log Off When Not In Use
Log off the server when you really don’t need to be logged on. This frees up resources to run other applications packed with additional server security.
Make sure that your backups are working at the right backup location before deleting important data by running the test recoveries.
Unlike before, compression aids to streamline few functions by making the hard disk smaller thereby increasing the performance. However, compression works only for servers that use a lot of individual files as the compressed files must be decompressed to get it worked.
Review Disk Usage
Try not to utilize your server as an archival storage. Make sure that you delete unwanted data as they constraints security alerts. If your usage surpasses 90% of disk capacity, take a stab at diminishing the use or increase the storage capacity. Else your server may stop responding and all the data will be lost.
Make Adjustments In Server Control Panel
The applications running in the background should be given priority and their performance should be enhanced by optimizing the server through systems menu in server control panel.
Keep Your OS And Control Panel Updated
System updates are announced frequently, thus you need to watch out for the updates. Make sure that your server control panel and the software it controls are updated. You can create a schedule for updates if you are unable to automate the updates. With the updated versions you receive real-time alerts when you are prone to vulnerabilities sent through files, emails, attachments etc
Opt For NTFS
Opt for NTFS, the default system instead of FAT or FAT-32 as NTFS is more secure and faster as it is a transaction based file system.
Spot Memory Leak
On completing a process, the application returns memory. However, when you run a bad application, there is a memory leak and they request more memory each time without returning any memory which affects the performance, hence it is necessary to spot and fix the memory leak.
Choose Dedicated Drives
Prefer placing the pagefile on a dedicated drive so that Windows does not require to wait for another application to finish before it can read the pagefile data.
Disable unused credentials and services
Try not to waste your server resources by removing all the junk store and make sure that you remove the user accounts of the people who are not currently associated with your business. Similarly you can disable the services that you no longer require through service control manager. By doing this, you automatically boosts the performance of the server and overcome the security vulnerabilities.
By keeping track of the above-mentioned techniques you can remain proactive and boost the performance of your server. There are cases where you have to upgrade to a larger server to best utilize the resources and maximize the server performance. Otherwise, you can roll out some little improvements that make the lift you require without paying more. For those hoping to make the most out of what they have and extend their assets, these little enhancements can signify enormous investment funds over the long haul.
Before acquiring a dedicated server one should get a definite thought regarding its processors, considering how powerful you need the server to be? A lot of theories are going on these days about whether one ought to pick Xeon processors or the Core I7 processor. FDC Servers, one of the leading data centers in the US utilizes the Xeon processor in all its dedicated servers. You seem to be speculated that what is so unique about Xeon processor? Yes, it makes a major distinction. Xeons are designed for servers, storage solutions, workstations etc in such a way that they outnumber core processors in performance, efficiency and resilience. Certain conspiracies are revolving around the Xeon processors that they do not have integrated graphics. Obviously, including a graphics card is a vital option, but why do a server need one such integrated graphics when configuring them over the network is a more feasible option?
Let’s find out, Why to choose a Xeon processor for dedicated servers?
- ECC RAM
- Multiple CPU Benefit
- Numerous Cores
- L3 Cache
- Supports Virtualization
- Hyperthreading Support
One of the notable features of Xeon processors is the support for ECC memory. ECC termed as Error Correcting Code Memory identifies and rectifies the corrupt data instantly. This prevents single-bit memory errors and keeps up the reliability and uptime. This feature is invariably essential for servers which requires critical computing where data corruption can turn fatal.
Instead of having multiple processor cores, high memory bandwidth or a huge amount of memory, it would be great to go for a system with more than one CPU. Such multiple CPU benefit is possible in Xeon, however, such deployment is not supported in core series. This deployment is made possible in Xeons through an added on-chip logic. This facilitates communication between the CPUs in order to share memory access and workload coordination.
In addition to the potential of multiple CPU benefits, Xeons can feature multiple cores. In general Xeon processors can have a maximum of 48 cores whereas core I7 processors can possess a maximum of 8 cores. Due to the complexity of increasing the core count, Xeon processors are quite expensive. Yet, heavily threaded applications can see huge lifts from those additional cores.
Cache memory enables the processor to retrieve the information directly by storing all the frequently used data. This reduces the average time to access data from the main memory and helps the processor to fetch information faster. L3 cache is indispensable for applications that require high performance as it aids in immense process speeding. L3 Cache is double for Xeon processor than Core I7 processors.
In the modern age, server workloads are virtualized and, Xeon processors offer a good virtualization support. In the virtualization environment, software and other OS runs inside a fake hardware and a single host OS is capable of managing several virtual environments with the add-on extensions. Xeon processors provide a whole chain virtualization support and the most secure way is to get a Xeon based setup if your plans include virtualization.
The process of distributing the processor’s workload by creating virtual cores in accordance to the physical cores is termed as hyperthreading. Core I7 processors do not support hyperthreading, whereas Xeons supports hyperthreading by doubling their cores.
Having known the features of Xeon, FDC servers are using in its dedicated servers. Xeons are great for virtualization, chat servers, video transcoding etc as they possess enough power to run heavy applications smoothly. They can be used for websites dealing with high traffic and a large amount of content. They are energy efficient, redundant and possess high core count, system memory with ECC RAMs.
Now, it’s up to you to decide if you require a Xeon based dedicated servers and if you need one please contact us. We excel as dedicated server providers in USA and EU and dedicated server hosting from FDC servers guarantees you high-performance websites.
The web is a collection of several data centers or networks. The enormous ballooning of world-wide-web and its related advancements leverage users to access internet from multiple devices. Web servers need to cater numerous user requests from numerous devices and it becomes difficult for web servers to handle multiple workloads when the web servers are located in a single location. This scenario negatively impacts the performance and efficiency of a website as the users are prone to access a wide range of applications including multimedia applications, audio, video, millions of dynamic web pages etc. Efficient and robust network infrastructure is required to handle these multiple workloads, hence CDNs are employed in data centers to balance the load on infrastructure and to swiftly deliver contents to end users.
CDN and eLearning
In the technological era, e-Learning has completely changed the manner by which the learning was conferred to students. Many of the organizations have adopted this system due to the simplicity of the process and accessibility of the material anywhere anytime quickly.
CDN’s enable you to offer a smooth, quick, and consistent experience to the learners regardless of where they may be on the planet. It comprises of various servers which are distributed globally.
For instance, if you are conducting a training program globally, one server should be placed in each participating country and these servers will copy the content of learning management system or websites, enabling a cached version to be available readily. Whenever a new content is added, they are pushed to the servers enabling the servers to stay up to date. When a learner tries to access a content, the request is automatically redirected to the nearest server, and it immediately sends the cached version to the learner. Data gets transferred quickly with the CDN system as the distance between the client and the server is significantly shorter.
Let’s explore the different methods through which CDN’s deliver the learning materials
Learners can choose from a library of video feeds and can be utilized anywhere and wherever it is most advantageous for the learners.
eLearners can tune into live events and ask questions through “Question manager”.
Possessing a network connectivity and browser, learners can attend and instructors can present from anywhere in the scheduled delivery time. Instructors can make use of different e-learning methodologies and they can poll the audience, receive questions etc while the learners can chat or break into work groups.
Virtual labs facilitate real-time practical training for learners. Learners are allowed to pick a suitable time for practice and they can focus on specific skills which they feel they have to enhance before moving to another topic.
These tools allow organizations to identify skill gaps and competency deficits.
Benefits of CDN in eLearning
CDN’s are extensively used in online learning methodologies as they serve content quickly to users from different locations. Organizations by implementing CDN solutions benefits in the following ways.
Learners don’t have to wait too long for accessing their training content as CDNs are faster in responding and delivering content to the end users. They also reduce the strain on servers which improves the overall performance of your system.
Availability and Scalability
CDN’s can be integrated with cloud models and the content remains accessible even in situations such as excessive traffic, server outages etc.
CDN’s facilitate content redundancy which in turn minimizes the errors without the use of additional hardware.
Enhanced User Experience
Majority of the websites redirect learners to correct CDN and navigate to a new URL in a swift of time which facilitates learners to enjoy online learning.
CDN’s also effective addresses data integrity and privacy concerns.
To conclude, CDN’s are seen as an ideal solution in eLearning as they improve response times for content delivery across the servers deployed at multiple locations and many organizations and business have successfully implemented eLearning methodologies with the deployment of CDN.
In today’s world of business, data is multiplying at an intense rate. Hence, the amount of data that a data center needs to store has increased tremendously. The rapid growth of multimedia content has turned archiving and storage into a major concern and data centers are rapidly transitioning to fit the big data storage requirements. The technologies in storage device differ in terms of performance, capacity, reliability, and cost. Solid State Drives (SSD) and Hard Disk Drives (HDD) are leading the data center storage technologies. If you are provisioning a data center or looking for storage solutions, you should choose whether to utilize a solid-state drive (SSD) or a hard disk drive (HDD).
What are HDDs and SSDs?
Hard Disk Drives(HDD) store data magnetically on spinning platters whereas Solid State Drive(SSD) store data electronically on semiconductor circuits. SSD stores data even when powered down as they deploy non-volatile NAND flash memory as their storage medium. This aspect has fundamentally increased the usage of SSD over HDD. However SSD does not hold an edge in all angles, hence before choosing SSD or HDD, it’s vital to access the features of both storage solutions individually.
In this article let’s explore how SSDs and HDD differ in terms of performance, speed, cost etc
SSD Over HDD in Performance
The two storage mediums differ largely by “Speed”. SSD can achieve a performance level that is up to 3 times greater than HDDs. HDD platter disks can read and write data at the rate of 50-120MB/s whereas SSD’s flash drives can read and write data at a rate of 200-500MB/s. The performance matters in applications which require high performance and when fast booting is required.
SSD store data electronically whereas HDD requires a mechanical interface to store data and this makes SSD faster. SSD’s do not suffer from fragmentation problems and do not produce noise or vibrations like HDD’s. Power drawn by SSD and boot up time is comparatively less than HDD.
Mentioned below are the benefits of SSD that particularly apply to data centers
- Large Areal Density Data centers can store more data in less space which increases the efficiency.
- Low Noise which aids data centers to operate quieter
- Low Power Consumption Data center requires running a lot of drives and with SSD’s data centers can conserve power
- High-Speed Data can be accessed faster and caching, booting takes place at a faster rate
HDD Wins In Capacity And Cost
When considering the capacity, regular hard drives have an edge over SSD. HDDs in huge capacities are a normal occurrence and HDDs below 500GB are becoming rare. Even though SSDs offer a number of performance benefits, they stay behind HDDs when considering the inexpensive mass storage capability.
SSD’s are much more expensive than HDD’s. An estimated research reveals that SSDs are roughly 7.5 times more expensive than HDDs per bit. For instance, You will be paying $100 for an HDD with a capacity of 1TB 2.5 inch drive, whereas you will be paying $900 for SDD with the same capacity which is roughly a 9 times greater than HDD.
How to Choose?
Here are some tips to choose which storage medium is best for you
- You can choose HDD if
- You can’t afford much
- You require large storage capacity
- You don’t care much about data access speed, booting, caching time etc
- You can choose SSD if
- You can afford a larger price to avail high performance
- You require limited storage capacity
Even though SSDs stand out with several advantages. HDDs still has a strong edge in terms of cost and capacity. Although SSDs cannot overtake the benefit of HDDs in cost, SSD facilitates intriguing implementation in data centers. Most of the companies use both rather than relying on one technology. SSD’s are employed when faster data read/write speeds are necessary and rely on HDDs when performance don’t matter as they are cheaper with wide storage capacity. It’s better to opt for a balance in the data center rather than looking into the dominance of the technology advancements.
The site of a colocation data center plays a vital role in picking up the best service provider. Tagged as a significant part of the IT environment, it is very important that you to look into certain variables that should be considered to come up with a befitting selection. It is not only about the distance, a host of parameters which form a checklist should help you in deciding the right location to set up a colocation data center. Here, we shed light on all such determinants that should be considered by the IT administrators and managers to zero in on a provider who has set up a colocation data center in the right place.
- Proximity to Local IT support
- The Provision to Avail Remote IT Support
- Weather Conditions
- Significant fluctuations in temperature
- Average speed of wind
- Susceptibility to Earthquakes
- Power Considerations
- Connectivity Via Multiple Routes and Airports
The first pointer in the checklist concerning the best site for a colocation data center is to evaluate the nearness with the “Response Team”. Recognized as a team of IT support professionals, it is very important for the Response Team to be close to your site. The nearer your site is to the IT support team, the easier it will be to address your issues as and when they emerge. Nearness to Response Team favors early rectification of errors which may burn a hole in your pockets.
Some of the colocation data centers promise a remote IT support through a team of trained IT specialists. These are the IT staff who will look into the regular operational and maintenance of your colocation data center. This service when teamed with an on-site support can help you come up with the right decision regarding the best place for your colocation data center. Hence you should check out a site which is close to a remote IT support facility.
It is important that you spare a thought about the environmental concerns that a particular location faces from time to time. Despite the fact that weather is unpredictable, you should be able to estimate and plan around instances like:
Regional weather reports will help you come up with the right decision for a colocation data center site. When you start collating all the above data points concerning weather, you will be able to establish a pattern of weather changes. In such cases, it is always better to pick a site which is slightly warmer when compared to regions which are susceptible to floods and strong breezes.
Another parameter that should feature in your location selection checklist for your colocation data center is connected with the seismic risk. Places which are prone to earthquakes should be avoided. Checking out the seismic activity of a location can save your data center from paying a heavy price in the form of an irrecoverable damage that can be caused by a natural disaster.
Simply focusing on a location which promises a good amount of power is not enough. You should research well and come up with the exact locations of power stations, substations and power feeds that will supply the much-needed electricity to your data center. You should also collate information concerning the recent outages in the area along with the time taken by the provider to rectify the fault. It is only when you delve deep into the local power utilities that you will be able to make an intelligent move of picking up a favorable site for your data center. It is also important that you select a site that has access to multiple power sources instead of those that are relying on a single source of power.
Analyzing the topography of the location with regard to its accessibility goes a long way in selecting a site for your data center. You need to check out a location that does not call for a travel via highways or main roads. Checking out a site that is connected with an airport is another tip that goes a long way in making the right decision. Proximity to an airport will simplify the tasks of transporting both personnel and equipment for support purposes. You should take time to come up with locations which are well connected to both domestic and international airports.
Preparation is indeed the key for the success of any activity, more so when it concerns the important decision of selecting a site for your colocation data center. When you keep in mind the above-mentioned parameters and tick off one factor after another, you will thank yourself for the perfect location that houses your data center. Your time and effort will pay you off when you finally make a smart move with regard to picking the best place for your colocation data center.