Logical Disk Manager

What is Logical Disk Manager?
The Logical Disk Manager (LDM) is the Microsoft version of a logical volume manager that was first introduced in Windows 2000 and is supported by Windows XP and Windows 7. Microsoft licensed this software from Veritas Software; The two companies then developed it further together. The main purpose of the logical volume manager is to create and manage dynamic volumes.

Dynamic disks are special because they can span multiple physical disk volumes, which allows the disks to be resized dynamically without the need for a reboot. Unlike basic disks, a dynamic disk volume does not contain partitions.

LDM enables hard partitioning, which is the result of partitioning using the MBR (Master Boot Record) partition table.

Dynamic and base plates have two fundamental differences:

- Basic disks do not support multipartitioning, while dynamic disks do.

- The basic disk partition information is stored in the registry, while for dynamic disks it is stored on the disk itself.

LDM enables the implementation of:

- Volumes that span multiple physical disks
- RAID 0 (simple striping)
- RAID 1 (mirrored volumes) for Windows servers only
- RAID 5 (striping with parity) for Windows servers only

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