Acronis Disk Director 12 - User Guide - Manual (Page 77)

77 Copyright © Acronis International GmbH, 2002-2014
R
Root folder
The folder (p. 72) where the folder tree of a file system (p. 72) begins.
Starting from the root folder, you can uniquely describe the file (p. 72) position in the folder tree by
sequentially naming all the intermediate nested folders—for example:
\Windows\System32\Vmm32.vxd.
In this example, the Windows folder is a subfolder of the root folder, the System32 folder is a
subfolder of the Windows folder, and the Vmm32.vxd file is located in the System32 folder.
S
Sector
The smallest information unit on a disk (p. 70) that is transferred in a single read or write operation.
Usually, a sector is 512 bytes in size.
Simple volume
A volume (p. 79) that consists of disk space from a single dynamic disk (p. 71).
Physically, a simple volume can occupy more than one region of disk space, which can be logically
perceived as a single contiguous region.
When you extend a simple volume to another disk, the volume becomes a spanned volume (p. 77).
When you add a mirror to a simple volume, the volume becomes a mirrored volume (p. 75).
Spanned volume
A volume that consists of disk space from two or more dynamic disks (p. 71), in portions that do not
need to be equally-sized.
A spanned volume can reside on up to 32 disks.
Unlike mirrored (p. 75) and RAID-5 volumes, spanned volumes are not fault-tolerant. Unlike striped
volumes (p. 77), spanned volumes do not provide faster data access.
Stripe
Each of the several equally-sized portions of disk space that make up a striped volume (p. 77) or a
RAID-5 volume.
Each stripe occupies a separate hard disk.
A striped volume consists of two or more stripes. A RAID-5 volume consists of three or more stripes.
Striped volume
A volume that resides on two or more dynamic disks and whose data is evenly distributed across
equally-sized portions of disk space (called stripes) on those disks.