RAID 6 vs RAID 10 Ultimate Rundown

RAID process is a method by which the reliability and data storage performance of storage devices are enhanced. Find out which is better RAID 6 vs RAID 10.

The RAID process is a method by which the reliability and data storage performance of storage devices are enhanced. An acronym standing for redundant array of independent disks, it is commonly used with HDD hard disks. However, recent development has seen it being applied to Solid State Drives too. There are varying levels of the RAID process, and each of these processes can be applied for different purposes.

RAID 6 vs RAID 10: What you need to know

RAID 6 vs RAID 10 Ultimate Rundown | TTR Data Recovery

The RAID configurations have their attendant merit and demerits. As these processes are not standardized by any unified body, the selection of any of these processes will depend on the need of the user. The aim of this article is to help you make a very important decision concerning two different Raid processes.

If anything goes wrong with your RAID setup, don’t hesitate to call our RAID array data recovery service experts.

RAID 6 is one of the various RAID level processes. Raid 6 is one of the safest and secure RAID processes. Raid 6 uses data striping on a block-level basis and spreads these data dual parity blocks on each disk within the array. This means, in RAID 6, that a parity checksum of the data is written and stored on two disks.

Raid 6 is commonly referred to as the double parity Raid. It acts as an upgrade to the RAID 5 process, which uses one drive instead of the two used in RAID 6. Raid 6 requires a minimum of four storage systems to operate.

Raid 10 (Raid 1 0) is another variant of the RAID process. It involves the combination of the Raid 1 and The Raid 0 processes. This implies that data mirroring and data stripping are combined in a single system.

Raid 1, data mirroring, is carried out on all secondary drives to secure the data. This means that as long as the data is mirrored (copied) on another drive, the security of the data is ensured. This holds even if the original drive containing the data is damaged or unavailable.

Raid 0, the data striping part, comes handy in boosting the data transfer performance of the storage systems. This is done by striping among the set of drives. This allows your computer to access the data whenever needed, hence boosting the data transfer performance of the drives.

RAID 6 vs RAID 10: Performance, Disk Utilization, and Safety Comparison

RAID 6 vs RAID 10 comparison | TTR Data Recovery

In this section, we will attempt to establish the differences that exist between these two RAID processes, Raid 6 vs Raid 10.


RAID 6, on the one hand, has little effect on the rate of data transfer. The main aim of the double parity process is to ensure the safety of data. It ensures that you can access your data even after two drive failures. RAID 10 improves the rate of data transfer of your drives more efficiently. It allows your drives to perform excellently in accessing data. This is due to the fact that RAID 10 includes data striping activities which help speed up the rate of data accessibility and transfer.

Disk Utilization

RAID 6 uses less space. As an example, if you’ve four drives on your RAID 6 configuration, half of that total space is available as useful disk capacity. Another edge that the Raid 6 process has regarding the disk utilization is that adding more disks increases the amount of usable space.

As an example, adding four more disks to the four used in the previous example decreases the space consumed by 25%.

Raid 10 consumes a lot of disk space. This is expected due to the data mirroring activity of RAID 1, which doubles the amount of disk space used. As more duplicate data are produced, more disk space is consumed.

Therefore, because of this data mirroring, half of the disk space in RAID 10 is used for data protection.

Safety Comparison

Raid 6 provides top-notch protection and safeguarding for your disks. By striping with parity across different drives, it makes it easier for the computer to access data stored. Even in cases of disk failures. As a matter of fact, Raid 6 can withstand up to two disk failures. Raid 10, due to the Raid 1 array configuration, also ensures the safety of data. Copying or mirroring is the easiest way of ensuring data protection and safety. the only downside to the protection feature of the Raid 10 configuration is the fact that it consumes a lot of disk space as compared to Raid 6.

What are the unique characteristics of RAID 6?

What are the unique characteristics of RAID 6 | TTR Data Recovery

Many characteristics and advantages make Raid 6 stand out amidst other RAID levels. These features are unique to the Raid 6 array only and cannot be found with any other RAID levels.

They include:

Data security

Raid 6 array is more secure than most RAID processes, even Raid 5, this is because the parity checksum of the data in Raid 6 is written and stored on two disks, unlike one disk used in Raid 5.

Number of drives

Raid 6 requires a minimum of four storage systems.

More Usable capacity

The Raid 6 array provides more usable capacity by using up less disk space as compared to most RAID arrays.

Which one is better, RAID 6 vs. RAID 10?

Which one is better, RAID 6 vs. RAID 10 | TTR Data Recovery

It is difficult to summarily declare that Raid 6 is better than Raid 10, or vice-versa. This is because both processes have their attendant advantages and disadvantages. The decision of the better process between the two arrays will be determined by the uses and requirements of the user.

If you are keen on protecting your data while conserving disk space, Raid 6 might be your best bet. It provides efficient protection against data loss during disk failures. And this is done without consuming much space as Raid 10 does. While Raid 10 does ensure data protection too, it consumes a lot of space in doing this.

If, on the other hand, you are more concerned with the speed of data transfer on your storage systems, then you may want to go for Raid 10 since it has a higher rate of data transfer. By virtue of the data stripping activity of Raid 0 array, quicker access and loading of files is ensured.

If, however, you want to enjoy the best of both worlds, i.e., secure data during a disk failure and speed up of the rate of data transfer, Raid 10 array is your best option. Although, with the Raid 1 0 arrays, you will be consuming a lot of space in enjoying these benefits.

FAQs about RAID 6 vs. RAID 10

Faqs About Raid 6 Vs. Raid 10 | Ttr Data Recovery

How many drives can you lose in a RAID 10?

A total of four drives can be lost in a Raid 10 array.

How safe is RAID 10?

Raid 10 is very safe. This is majorly because of the presence of Raid 1 array, which is the safest RAID level.

Does RAID 10 need identical drives?

As with any RAID level, there is no requirement for identical storage devices in the configuration.

How safe is RAID 6?

Raid 6 is also safe, but it is not as safe as the Raid 10 process.

Why RAID 10 is the best?

Raid 10 combines two RAID processes (1 and 0) to provide efficient data protection and data transfer features.

How many disks can fail in a RAID 10?

Raid 10 can only survive a single disk failure.

Tommy Kh | Ttr Data Recovery

About the Author
Tommy Khamoushi, Data Recovery Expert

Tommy Khamoushi is an IACRB-certified Data Recovery Engineer and a Certified Forensic Computer Investigator. He has more than 20 years of experience in data recovery including providing technical support for the House of Representatives.

Tommy leads a team of data recovery engineers and experts at TTR Data Recovery to recover highly sensitive data for government agencies like the National Aeronautics and Space Administration (NASA) and enterprise businesses using advanced and proprietary techniques and processes.

Connect with Tommy on LinkedIn.