El operating system Windows 10 has a large number of tools and solutions that allow you to do everything. One of the most powerful tools that we find in Windows 10 is the 'Disk Management'. This Windows 10 utility allows us to do many things, such as creating a volume in our storage units. One of the things it allows us to do is create and manage different types of volumes.
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What is a volume in Windows 10?
Within computing, the term volume is used to refer to a storage unit. Volume in Windows 10 is also used to refer to a part of a storage drive, also called a partition.
A storage unit can be divided into several volumes of smaller capacity. This is often done for more efficient data management or to create system restore partitions, for example.
Difference between basic and dynamic disks
Basic discs
This is the basic format that Windows recognizes and adds hard drives to the system. Primary or extended partitions can be additionally generated within these logical volumes.
Dynamic disks
Microsoft implemented this option to support fault tolerant systems that use multiple hard drives. The difference from a basic disk is that dynamic disks work through volumes, not partitions. This volume management allows configuration modifications that are not possible on basic disks. For example, enlarging or reducing the size of a created volume.
Dynamic disks are within the system disk group. Dynamic disk information is stored on drives, in a space reserved for such use, and not in the Windows 10 registry. This is intended to hot-pull drives and insert them into a new system. The new machine accesses the drive's metadata and thus can access the information. The system from which the unit was taken recognizes the lack of the disk because the rest of the storage units recognize the lack of a disk.
The table could not be displayed.Types of volumes on hard drives
Single volume
It is a volume in Windows 10 made up of one or more sections of the same disk. They can only be created on dynamic disks and have the ability to be mirrored. A simple volume is very similar to partitions on basic hard drives.
A simple volume can be expanded by adding parts of the same storage unit or other units. When a volume is expanded, it can no longer reduce its size or delete the added parts. The only option at this point would be to delete the volume.
Simple volumes can be expanded by occupying other hard drives up to a maximum of 32 dynamic disks.
Distributed volume
It is the configuration of a volume that is made up of several parts of several storage units. It can only be created on dynamic disks and this system is not fault tolerant.
Spanned volumes allow for expansion, adding new slices to the disk. As with simple volumes, you cannot reduce capacity, you can only remove the volume if you want to reduce capacity.
Sectioned volume
Type of volume that is made up of a set of portions or bands of the same size (64Kb) of several disks up to a maximum of 32 units. Some of the information is reserved on the bands of the different disk drives. The information is distributed equally and alternatively, occupying all the bands or portions of the discs that are integrated. This improves performance.
Note that the discs can be of different sizes, since the bands will be the same on all discs. They cannot vary in size once they are created.
Striped volumes can only be created on dynamic disks. This type of volume does not offer fault tolerance, rather the opposite is the case. If one of the disks or a band suffers some kind of error or failure, the entire volume fails and the information is lost. Basically this would be the same system as a RAID 0. The reliability of this type of volume is always lower than the reliability of the less reliable disk.
These sectioned volumes offer us better rates of return. Read and write speeds go up, as with RAID 0 configurations. These types of volumes are chosen for performance.
Mirrored or reflected volume
Type of volume with tolerance that is based on a second disk of equal size to the first where the information is duplicated. Although the two disks may be the same size, the physical capacity, the number of cylinders, etc., could differ a lot.
For this type of volume, the copies must be located on two different storage units, and preferably on two different controllers, in a system called duplexing. If one of the storage drives fails, the system will restore itself using the copy. This system is especially recommended for the system volume.
A mirror copy can be booted from the emergency repair disk, but it has the disadvantage that the usable space is reduced by 50%.
This type of format can only be done on dynamic disks. It would be the same as a RAID 1 system on Windows NT. There is a problem with this configuration, which is that they are very slow to write due to duplicate writes.
RAID 5 volume
RAID 5 volumes distribute data in blocks using a parity system among the member disks in the array. Parity information is added to the data in this type of volume, which serves as a code for detecting and correcting possible errors. For these types of volumes, at least three hard drives are required and a maximum of 16 drives is recommended.
These types of volumes are generated due to their fault tolerance. In case a disk or a band contains an error, the lost information can be reconstructed from the data of the rest of the parity bands. Therefore, you can bear the loss of a disk without losing data, since the volume is still online.
The downside is that at the time of recovery, the system is prone to failure until the faulty disk is replaced or the RAID 5 volume is corrupted. During the read operation, only the data located in the corresponding band is read. With the reading of a band you can know if there is an error or not.
In the event that the system detects an error in a band read or on a disk, it will read the rest of the data bands and the parity band, thus being able to rebuild the damaged band. If the error occurs in the parity band, a rebuild is not required.
Some of the disk capacity is allocated to the parity band, so not all of the disk capacity is available to store data. The larger the number of disks in the volume, the lower the capacity available on the disks, because the more disks in the volume, the more capacity is required for the parity band.
Also, these types of RAID 5 volumes consume a lot of system memory. They are not the best solution either, since if two units or two parity bands fail, all data will be lost.
