Acronis DDDMLPDES21 User Manual

A volume letter is usually assigned when you format the volume. It can be assigned, changed, or
removed later without affecting the volume’s data.

A volume letter is also called a drive letter.

Volume type

The type of volume, which is determined by the volume structure and by the type of disk on which
the volume resides.

The following is the list of volume types with short descriptions:



Basic volume (p. 80): A volume on a basic disk. Can be one of the following types:



Primary volume (p. 89): Can store information needed to start the machine or an operating
system



Logical volume (p. 86): Usually stores user files and operation system data



Dynamic volume (p. 84): A volume on one or more dynamic disks. Can be one of the following
types:



Simple volume (p. 89): Occupies a single disk.



Spanned volume (p. 89): Occupies two or more disks in arbitrarily-sized portions.



Striped volume (p. 90): Occupies two or more disks in equally-sized portions. Can provide
faster data access.



Mirrored volume (p. 87): Occupies two disks in two identical portions (mirrors). Fault-
tolerant.



RAID-5 volume: Occupies three or more disks in equally-sized portions. Fault-tolerant.