Acronis backup recovery 10 workstation 用户手册
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6.11.6.1. Creating a volume
You might need a new volume to:
•
Recover a previously saved backup copy in the “exactly as was” configuration;
•
Store collections of similar files separately — for example, an MP3 collection or video files on a
separate volume;
separate volume;
•
Store backups (images) of other volumes/disks on a special volume;
•
Install a new operating system (or swap file) on a new volume;
•
Add new hardware to a machine.
In Acronis Disk Director Lite the tool for creating volumes is the Create volume Wizard.
Types of dynamic volumes
Simple Volume
A volume created from free space on a single physical disk. It can consist of one region on the disk
or several regions, virtually united by the Logical Disk Manager (LDM). It provides no additional
reliability, no speed improvement, nor extra size.
or several regions, virtually united by the Logical Disk Manager (LDM). It provides no additional
reliability, no speed improvement, nor extra size.
Spanned Volume
A volume created from free disk space virtually linked together by the LDM from several physical
disks. Up to 32 disks can be included into one volume, thus overcoming the hardware size
limitations, but if at least one disk fails, all data will be lost, and no part of a spanned volume may
be removed without destroying the entire volume. So, a spanned volume provides no additional
reliability, nor a better I/O rate.
disks. Up to 32 disks can be included into one volume, thus overcoming the hardware size
limitations, but if at least one disk fails, all data will be lost, and no part of a spanned volume may
be removed without destroying the entire volume. So, a spanned volume provides no additional
reliability, nor a better I/O rate.
Striped Volume
A volume, also sometimes called RAID 0, consisting of equal sized stripes of data, written across
each disk in the volume; it means that to create a striped volume, a user will need two or more
dynamic disks. The disks in a striped volume don’t have to be identical, but there must be unused
space available on each disk that you want to include in the volume and the size of the volume
will depend on the size of the smallest space. Access to the data on a striped volume is usually
faster than access to the same data on a single physical disk, because the I/O is spread across
more than one disk.
each disk in the volume; it means that to create a striped volume, a user will need two or more
dynamic disks. The disks in a striped volume don’t have to be identical, but there must be unused
space available on each disk that you want to include in the volume and the size of the volume
will depend on the size of the smallest space. Access to the data on a striped volume is usually
faster than access to the same data on a single physical disk, because the I/O is spread across
more than one disk.
Striped volumes are created for improved performance, not for their better reliability - they do
not contain redundant information.
not contain redundant information.
Mirrored Volume
A fault-tolerant volume, also sometimes called RAID 1, whose data is duplicated on two identical
physical disks. All of the data on one disk is copied to another disk to provide data redundancy.
Almost any volume can be mirrored, including the system and boot volumes, and if one of the
disks fails, the data can still be accessed from the remaining disks. Unfortunately, the hardware
limitations on size and performance are even more severe with the use of mirrored volumes.
physical disks. All of the data on one disk is copied to another disk to provide data redundancy.
Almost any volume can be mirrored, including the system and boot volumes, and if one of the
disks fails, the data can still be accessed from the remaining disks. Unfortunately, the hardware
limitations on size and performance are even more severe with the use of mirrored volumes.
Mirrored-Striped Volume
A fault-tolerant volume, also sometimes called RAID 1+0, combining the advantage of the high
I/O speed of the striped layout and redundancy of the mirror type. The evident disadvantage
remains inherent with the mirror architecture - a low disk-to-volume size ratio.
I/O speed of the striped layout and redundancy of the mirror type. The evident disadvantage
remains inherent with the mirror architecture - a low disk-to-volume size ratio.