What is the logical volume management?
The unit distribution divides the unit into various logical segments. One of the common examples used by modern computers manufacturers is to create a "C" unit for the basic files and the "D" unit for system recovery files. Logical volume management (LVM) removes the concept of distribution using a hard disk as it was, as the only unit for storing data.
Think about the division as drawing lines on the map indicating the sovereign territory of the country. Once these lines are drawn, they can be changed, but the process is generally difficult. For distributed systems, it requires a change in size and makeup of partitions, which can be a drastic step. During the re -formatting, all data stored on the selected section are deleted and the partition is redesigned to new specifications.
Logical volume management offers an alternative. In a system using logical volume management, the concept of division of partitions on the disk becomes much more liquid. LVM saturation, partitions can be combined, combined and againThose, everything without reformatting any disk space.
This improves the smoothness and usefulness of computer data storage systems. Changing someone's mind concerning the scheme of the data storage in the logical volume management system is simple and the redistribution of data does not require wiping the unit and start. However, logical volume management systems are not without deficiencies.
The two main disadvantages of logical volume systems are fragmentation and impaired recovery. Files stored on a hard drive are not always stored in one piece. The computer more often divides the files into parts and stores each part in available spaces on the unit. This is fragmentation: Because all files for a particular program are not maintained together, getting these files becomes more difficult and slowing performance.
Restoring Problems occur because LVM volumes are so smooth that after falling is much more difficult to re -assemblyIT information about units. This means that although they are smoother, the volumes of LVM are also more volatile. As a result, the solution of advances will become more important in dealing with LVM systems.