Does Raid 0 Double Space?

Raid 0 is a commonly used technology in computer storage that allows multiple hard drives to function as a single unit. It’s a popular choice among users who require high speed and reliability in their storage solutions. But there’s a general misconception that raid 0 doubles the space of hard drives. In this article, we’ll explore whether this claim holds true, and other crucial aspects of raid 0 technology.

To start, let’s clarify what raid 0 does. Raid 0, also known as striping, divides data into small portions and stores them on two or more hard drives. By splitting data across multiple drives in this manner, data read and write speed is considerably faster, which leads to an overall improvement of storage speed. However, raid 0 doesn’t increase storage capacity, as the data is still written in the same amount of space, just spread across multiple drives. So it’s important for users to understand raid 0 for what it is, rather than expecting it to provide double the storage.

Does RAID 0 Double Space?

RAID 0 (Redundant Array of Independent Disks 0) is a type of RAID system that splits data across multiple hard drives. Here are some key points to consider regarding whether RAID 0 doubles space:

– RAID 0 distributes data across two or more hard drives, which can improve performance and increase storage capacity.
– However, it does not provide any redundancy or data protection, as there is no parity data or mirroring involved.
– Because RAID 0 does not duplicate data, it does not double the available space like RAID 1 or other redundancy-focused RAID types might. Instead, it presents the combined capacity of all the drives in the array as a single volume.
– For example, if you use two 1TB hard drives in RAID 0, the resulting logical volume will have a total capacity of 2TB. However, this 2TB is distributed across the drives and does not include a data backup or mirror in case of drive failure.
– It’s important to note that RAID 0 does not provide any data protection in case of drive failure, so it is generally less reliable compared to other RAID types. This means that if one drive fails, all data on the entire array may be lost.
– In summary, RAID 0 does not double the space and is not recommended for mission-critical data storage due to the lack of redundancy and data protection.


1. Q: Does RAID 0 double my storage space?

A: No, RAID 0 does not double your storage space. It only enhances the performance of your storage by striping data across multiple drives.

2. Q: How does RAID 0 work?

A: RAID 0 works by distributing data across multiple drives in parallel. This means that reading or writing data is done simultaneously, which makes accessing files faster.

3. Q: Is RAID 0 a safe way to store my data?

A: No, RAID 0 is not considered safe for data storage because it does not provide any redundancy or backup. If one drive fails, all data on the RAID array may be lost.

4. Q: Can I mix different sized drives in a RAID 0 array?

A: Yes, but it is not recommended. Mixing different sized drives in RAID 0 may affect the overall performance of the array, as the smallest drive will determine the total capacity of the array.

5. Q: Is RAID 0 the fastest RAID level?

A: Yes, RAID 0 is the fastest RAID level because it distributes data across multiple drives, allowing for faster read and write speeds. However, it does not provide any redundancy or data protection.


In summary, RAID 0 does not double the storage capacity of your drives. Instead, it improves read and write speeds by splitting data across multiple drives. While this can yield significant performance benefits, it comes with a higher risk of data loss due to the lack of redundancy. Before implementing RAID 0, carefully consider your storage needs and backup strategy to ensure that your data remains secure.

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