Database replication involves creating and maintaining multiple copies of the same database for recovery and backup purposes. It requires transferring files from one computer or server to another so that all users share the same data. This results in a distributed database that gives users access to necessary information without interfering with others’ work. Normalization, which eliminates ambiguous data and inconsistent files among users, serves as the primary motivation for database replication. A distributed database management system (DDBMS) guarantees that anything that is added, deleted, or adapted on one server is reflected automatically in all other locations, creating an overall consistent database.

News of Steve Jobs death hit hard earlier this week, with people using social media to express their favorite memories, inspirational quotes, and other homage’s to the Apple cofounder. AdWeek, for example, added Jobs to the iconic “Crazy Ones” commercial, including him among legendary leaders from Gandhi to John Lennon; countless websites including Apple, Google, and Wired have featured him on their homepage; and, devoted fans have even left flowers at Apple stores all around the world. As the flag hangs at half-mast at Apple HQ, the world mourns for the loss of an innovative, influential leader who was full of heart.

  Snapshot storage backup recovery works almost exactly how  it sounds: by taking a photo of the computer hard drive at a  particular moment in time. The replication occurs by copying a  disk block when it is written or by using a split-mirror set of  disks. When it is time to restore from snapshot backup, the  result is almost instantaneous. Snapshot backup can deliver full, partial, file and even some differential database backups.

 Senior IT Consultant Jay  Ritchie has been with  NSK Inc. for exactly one  year last week. Prior to  joining NSK, Jay worked  as an IT Manager for  several local software  companies. Jay’s  experience includes  managing data center  environments and hosting  Point-of-Sale and  business to business  applications in tightly  regulated industries.  He  enjoys working in the IT  industry because it  allows him to solve  complex problems while protecting his clients from digital threats. 

In an earlier post, we discussed the pros and cons of using RAID (Redundant Array of Independent Disk) as a data recovery solution. RAID uses a disk drive component that distributes and replicates data across several levels of drivers. In a world that is becoming increasingly digital, RAID employs a physical disk drive, which is why it is important to note where physical data storage originated—tape backup.