RAID levels: what is it and what benefits are
Here you will find out:
- what kind of RAID levels exists
- what are RAID levels benefits
- how DiskInternals can help you
Are you ready? Let's read!
Currently there are many arrays, for example, RAID 0, RAID 1, RAID 2, RAID 3, RAID 4, RAID 5, RAID 01, RAID 50, RAID 10, and RAID 6. However, not all of them are widespread. The most popular are RAID 0, RAID 1, RAID 50, RAID 6, RAID 5, RAID 10, and RAID 01. Most often RAID 0, 1, and 5 are used, so let’s dwell on them in more detail.
- RAID 0 uses a striping mechanism when data is written in turn to each disk in the array. Because of this, performance (read and write operations) increases many times over, which certainly is good. However, an important downside of this array should be noted: if one disk is damaged, you will lose all the data in the array. That is, there is no fault tolerance here, so this RAID is not suitable for storing important information.
- RAID 1 uses a mirrored storage engine, completely different from striping. That is, data is written to two disks (the second disk is a backup for recovery). Such an array also has excellent performance and is also fault-tolerant. Since all data is mirrored, if necessary, it can simply be copied to another disk. It should be understood that exactly half of the storage is reserved for data backup, so in practice you can use only half of the free space. In addition, a hot-swap drive in case of the malfunction is not provided here. Therefore, for large servers, this array level is unlikely to work.
- RAID 5 is considered the most secure array level because it can withstand a single drive failure without data loss. The read operations in this array are very fast, which cannot be said about write operations (this is due to parity). The time to recover data from the disk can take a very long time and the array at this time will be inaccessible.
RAID levels and their benefits
Now let's explain RAID at different levels; namely, their main advantages and why they are so widely used.
- 1. Increased productivity is perhaps one of the fundamental criteria by which users choose to use arrays of different levels. There are a lot of levels of arrays, so the choice of desired performance is up to the user. Some RAIDs have better read speed than write speeds, some vice versa, etc.
- 2. Fault tolerance. A more reliable storage system is found in RAID at different levels than storing data on one disk — again, due to redundancy.
- 3. Higher data security compared to traditional information storage. All arrays except RAID 0 have the ability to counteract the failure of one or more drives. This again is due to redundancy.
- 4. Data availability at any level of arrays is much higher and safer than storing data on one disk.
- 5. Combining drives to increase overall space not only saves more data but also improves the performance of many programs that require continuous disk space. It should be remembered that if the array has redundancy, not all the free space is available for use; part of the space is allocated for copying information.
How to keep data safely on RAID levels
Despite the fact that arrays are well protected, there is still a risk of losing data. And if this happens to you, then download and install the application DiskInternals RAID Recovery. Successful data recovery of any format is more than 90% guaranteed, thanks to its many years in this field. The application will easily recover RAID 0, RAID 1, 0 + 1, 1 + 0, 1E, RAID 4, RAID 5, 50, 5EE, 5R, RAID 6, RAID 60 and JBOD. Virtual disks can be mounted on local drives, and all Windows restrictions are easily bypassed. No special technical skills are needed to recover damaged RAID arrays using RAID Recovery; the Recovery Wizard will help you with everything.
You can also apply the recovery instructions to be completely confident in yourself and the result.
As soon as the application is open, Recovery Wizard will automatically recognize the array.
Select the desired RAID and scan mode (full or surface).
Then wait for the results and view them for free.
After that, purchase a license and export the data to another source of information.