Archive for the ‘Server Mirroring’ Category

An Overview of RAID Levels. Part -II

August 25th, 2011 Comments off

Carried forward from last post, we will overview the remaining levels of RAID in this post.

  • RAID-6: This level have similarities of RAID-5 but this comes with extra second parity scheme which is distributed across different drives. The level offers very high fault-tolerance as well as drive-failure tolerance.
  • RAID-7: This level of RAID comes with a real-time embedded OS which works as a controller. It also performs caching via high-speed bus as well as provided facility of stand-alone computer.
  • RAID-10: After looking at the features one can easily come to know the RAID-10 is nothing but the combination of RAID-0 and RAID-1 as a result this level offers higher performance than RAID-1 but your also should be prepared to pay more amount for that. There are two subtypes can be found in RAID-10. In first one data is organized as stripes across multiple disks and then those striped disk sets are mirrored. In second subtype the data is mirrored and those mirrors are striped.
  • RAID-50: (or RAID-5+0): This level is carried with the series of RAID-5 level and striped in RAID-0, this made it possible to achieve improvement in performance without compromising anything with the data security.
  • RAID-53: (or RAID-5+3): This level consist of striping for RAID-3 virtual disk blocks with higher performance than the RAID-3 but for a higher cost.
  • RAID-S: This level is a substitute proprietary method which consist of of striping parity RAID from EMC Symmetrix which is not in use currently. It appears very similar to RAID-5 but with a little bit performance enhancement achievement. This level is also know for having a high-speed disk cache on the disk array. This level is also called as Parity RAID

So above we reviewed different levels available and can be provided as a RAID features, hence its important for webmasters who are going to select Dedicated Server Hosting for their websites, to analyze their requirements and ask for the suitable RAID lever from their prospective Web Hosting Services provider.

Key Aspects to Consider when Choosing a Web Hosting Provider.

July 14th, 2009 Comments off

Today, web hosting is one of the most preferred and the most populated online business. You can find number of companies who offer hosting for Big as well as for Small businesses. This makes it tough for an individual to choose the best suitable web host to host a website. One can follow the below mentioned simple factors that can ease you from the pain of shortlisting one such company.

A# Uptime : Uptime is one of the most important aspects when choosing a web hosting service provider. It is the uptime that determines the functionality of one’s website over the Internet. An uptime of atleast 99.95% can be considered to be ideal. 100% uptime is possible, it hardly does, as there might be a hardware failure or a planned maintenance of the server, which can cause downtime of the website. So, better be careful with the web hosts that claim to offer an uptime of 100%, unless technologies such as Server mirroring or Cloud technology is applied to the servers on which a website is hosted.

B# Connectivity and Speed : After Uptime one should know the speed High Speed or connectivity offer by the web hosting service provider. No matter if the web host offers maximum uptime, but if the speed is low and takes a longer time for the website to load, it’s a major set back for your website’s success. Therefore, the web host should offer good server speed. In this, bandwidth is another factor that must be considered. The web host should offer appropriate bandwidth with the package. For that you must analyze the packages and configurations offered by various web hosts. The processor is equally important for gaining good speed.

C# Security : With the ever increasing threat of online attackers, intruders and hackers, it is important that your website is hosted on a secure server. Your website data should be protected from the uninvited malwares and intruders, this should be one of the very basic requirements of any website owner. Therefore, it is important to check the security measures taken by web hosts for protecting the servers from such attacks.

Remote Server Backup D# Data Back-Ups : Its necessary that the web host takes or atleast offers optional plans for back-ups of websites hosted on a server. Usually most of the reputed web hosting provider offers such service for free with their dedicated server hosting plans. If such services are not displayed on their website, one should atleast ask them about it.

E# Post Sales Technical Support : Once you have chosen a web hosting Hosting Support service provider and have signed up for a package with them, it is important that the web host offers round the clock technical support. Usually,  people give least priority to technical support, but IMO. this one of the most important criteria when choosing a hosting provider. Inorder to have the web-site function very smoothly, it is necessary that the host experienced and knowledgeable technical crew to help you out during various paths of web hosting.

F# Money Back Guarantee : Take for example you have chosen a web offers 30 days Money Back Guarantee host and have also signed up for a plan with them considering the points stated above. But, later you realize that the information and services stated by the host on their website were not true, in that case you must have an option to withdraw your data and money from them.

Following these simple steps can help you get a better web hosting experience.

Get 100% Uptime with Mirroring Technology on Dedicated Server Hosting Plans

July 10th, 2009 Comments off

Server Uptime has the maximum importance in the Internet world. Getting a Dedicated Server mirrored can help you stay online at any given point of time. Dedicated Server Mirroring is a concept that has been preferred by large business to carry out the mission critical tasks.

Server Mirroring Technology

Server Mirroring” the name itself gives an idea of the technology. In this the data is mirrored or duplicated on two servers that share the same configuration. In this type of hosting service you can opt. between, Mirrored Dedicated Linux Servers and Mirrored Dedicated Windows Servers. This technique is a type of file or data synchronization and is widely preferred due to its reliability. In the Mirroring architecture, two systems are linked together. When there is a data transfer, the data is transmitted to either of the servers, but, the same data is duplicated on the other server/s as well. Encryption is possible too on the mirrored servers. This technology can be applied to WAN as well as LAN architecture of servers.

In this type of architecture, the web hosting provider, sets up the servers of similar configurations on different locations ie. different racks, different geographical locations, different datacenters etc. Usually, it is suggested to keep the servers in the same datacenter to avoid a delay in the delay in mirroring of the data. One among the servers is a Master and other as Slave or Secondary Server. If due to any reason, the Master Server fails to respond/ work, the Secondary Server takes over and starts operating as a Master Server, this avoids the possibilities of the downtime of website/s. FAM and RSync modules are used in the Mirroring architecture. When the Secondary server works as Master server, the process is called as a Failover Process.

Once the Master Server is replaced or repaired and re-installed to the network, the Restoration process gets initiated. In this the latest changes on the Secondary server that has taken place when the Master Server had failed, is now restored. Now, when the Master servers functionality has been resolved, the website data again starts getting resolved from the Master Server.

This kind of architecture proves to be an effective way of avoiding the downtime of websites. The Mirroring architecture helps in preventing the loss of data. You can avail this service from Web Hosting providers on request.