Logical Disk Manager

Developed by Microsoft - a logical volume manager for Microsoft Windows NT. Starting from Windows 8 and Windows Server 2012, Microsoft deprecated LDM in favor of Storage Spaces.

Logical Disk Manager enables disk volumes to be dynamic, in contrast to the standard basic volume format. Basic volumes and dynamic volumes differ in their ability to extend storage beyond one physical disk. Basic partitions are restricted to a fixed size on one physical disk. Dynamic volumes can be enlarged to include more free space - either from the same disk or another physical disk.

The main differences between basic and dynamic disks are:

  • Dynamic disks support multi-partition volumes; basic disks do not.
  • Windows stores basic disk partition information in the registry and dynamic disk partition information on the disk