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Disk mirroring is a method of backing up a disk in which anything that is written to a disk is simultaneously written to a another (second) disk. This creates fault tolerance in the critical storage systems. If a physical hardware failure occurs in a disk system, the data is not lost, as the other hard disk contains an exact copy of that data. Mirroring can be either hardware or software based. Hardware-based mirroring is implemented through the use of RAID controllers installed in the system to which separate hard disk drives are attached. These hard disks appear as different volumes to the system. Each data sector is identically written to all the volumes, thus creating multiple copies of the volumes. At the expense of mild system performance degradation, fault tolerance is introduced to the system. Software-based mirroring requires certain mirroring applications to be installed in the system. The software-based mirroring solution is usually less expensive and more flexible, b...

Google Allo for Android It's Excellent interface. Snappy, crisp user experience. Simple setup. Integrated Google Assistant puts Google search powers in your chat. Free SMS messages to non-Allo users. Snazzy sticker packs. Not integrated with existing Google messengers. Little third-party app integration with Google Assistant. Finicky search. No tablet version or Web interface. Lacks third-party stickers and extras. BOTTOM LINE Google Allo is a beautifully designed app that lets you chat and send media to your friends, and the Google Assistant adds search to the conversation. But even this unique feature doesn't quite propel it into the top ranks of the crowded messenger space. MAX EDDY Google announced mobile chat application Allo at the Google I/O conference in 2016, promising a whole new way of interacting with Google. It delivered on that promise, launching a well-designed Android app with Google Assistant integration, private incognito messaging, and some sticker and ...

Bandwidth throttling is the intentional slowing of Internet service by an Internet service provider . It is a reactive measure employed in communication networks in an apparent attempt to regulate network traffic and minimize bandwidth congestion. Bandwidth throttling can occur at different locations on the network. On a local area network ( LAN), a sysadmin may employ bandwidth throttling to help limit network congestion and server crashes. On a broader level, the Internet service provider may use bandwidth throttling to help reduce a user's usage of bandwidth that is supplied to the local network. Throttling can be used to actively limit a user's upload and download rates on programs such as video streaming, BitTorrent protocols and other file sharing applications, as well as even out the usage of the total bandwidth supplied across all users on the network. Bandwidth throttling is also often used in Internet applications, in order tospread a load over a wider network...