Showing posts from August, 2005

Rsync for incremental backups

Introduction Archiving files to tape is still considered one of the cheapest way of making backups. However with the prices of disk storage and solid-state storage decreasing rapidly, it won't be long before users make the switch to the faster disk storage for all thier backup needs. The problem, however, is that if you want to do anything more than mirroring data on a remote storage, there aren't too many good freeware tools to do it. This writeup explains one of the interesting ways to do incremental backups with snapshot cabability using a popular tool called rsync. Traditional Backup Traditional backup applications not only support backing up and restoring of files, directories, partitions and drives, but also allow incrementally backups to reduce time taken to backup large file systems. Since its not practical to restore the complete data from tape just to apply minor changes to it, most tape backup software store the differences in a seperate file or location on tape whic

Bluetooth on the way back

When King Danish Harald Blåtand, united Norway and Denmark, little did he know that a technology named after him ( Blåtand translates to blue-tooth) will have a chance of becoming a corner stone of the telecommunication industry. This industry is one of the fastest growing sectors in todays world, and whether you'd like it or not it is constantly changing the world around you. If it were not for the cell phone industry, we would still be hooked to our wired phones, and had it not been for the internet E-mails would just have been a fantasy. And in this fast changing world one protocol which is growing very rapidly is 'bluetooth' . And just like everything before 'bluetooth' wasn't created in a day. In fact it went through some rough times before its started catching on again.The telecom industry today is not very different from what it was 1000s of years ago. There still are many different ways to communicate and some are more popular than others. But