Redundant Array of Independent Disks (RAID) is an advanced datastorage virtualization technology, which is widely used by gamers, developers, videoeditors, professionals, and businesses around the world. That's because RAID offers many advantages—such asdata redundancy, higher read/write speeds, or both—over the traditional harddrive storage.
One can choose from several RAID levels starting with RAID 0 to RAID 10, which is a nested RAID arrangement of RAID 1 and RAID 0. Similarly, one can also create RAID 50, RAID 60, or RAID 100 as pertheir data storage requirements. However, nestedRAID levels are expensive, and most users can't afford it.
Also, always keep a backup of your data stored in your RAID drive to prevent permanent data loss. Please be aware; RAID is not a backup or alternative to backup. The purpose of RAID is to achieve high read/write performance for intensive tasks and maintain data availability in case of a drive failure. In case of loss of data use Stellar Data Recovery Technician software to get back your lost or deleted data.
Which One Should You Choose and Why?
Is the Thermaltake Core V71 Tempered Glass PC Case the best pc case for hard drive storage 2018? SUSCRIBEPC CASE FEATUR. With all that said, here are some of the best, high-performance RAID hard drive arrays for video editing: WD 12TB My Book Pro Professional RAID Storage – Thunderbolt USB 3.0 Although RAID systems can be configured in several different ways, we recommend using them set to 'RAID 0' which allows for maximum read/write speed that editors. The SK-2520 U3.1 is a dual-bay storage enclosure with hardware RAID, designed for two 2.5-inch SATA drives. In combination with two striped SSDs and its fast SuperSpeed USB 3.1 10Gbps (USB 3.1 Gen 2) interface, this bus powered storage drive can deliver speeds up to around 800-900 MB/s. Having your drives set up in a RAID does have a few disadvantages, at least when running Windows. For example, we don't have direct access to the S.M.A.R.T. Information of the individual drives.
To help you decide which RAID level is right for your datastorage needs and, most importantly, budget, we have detailed everything aboutvarious RAID levels—from RAID 0 to RAID 60—and mentioned their advantages, drawbacks,and applications.
RAID Levels—A Detailed Comparison
Best video studio. Below is a detailed comparison of standard RAID levels such as RAID 0, RAID 1, RAID 5, RAID 6 and nested RAID levels—RAID 10, RAID 50, RAID 60. A comparison chart is also attached at the end of the post, comparing various RAID levels on parameters such as minimum drives requirement, read/write performance, storage availability, redundancy, and application.
RAID 0
If you are into gaming and video editing, RAID 0 is theright configuration for your data storage needs. RAID 0 is a standard RAID configuration,which uses striping method to store data on the disk array. It's the most affordableRAID configuration that requires at least two disks.
Demanding tasks such as gaming and video editing requiresfrequent data transfer, often in large volumes. RAID 0 increases the read andwrites performance of your system by up to 2X than the normal hard drive andspreads the load across drives.
Figure 1: RAID 0 Illustration- Striping Storage method is used for data storage
Pros
- High read/write performance, comparable to SATA SSDs
- 100% Disk volume available for use
- Affordable and easy to implement
Cons
- No fault-tolerance (redundancy)
Applications
- For storing and accessing non-critical data
- Gaming
- Video and Image Editing
Recovery Management
- If a drive fails in a RAID 0 level, data will bepermanently lost as RAID 0 does not offer redundancy. However, you can recovera logically failed or broken RAID 0 level with the help of a RAID recovery software such as Stellar Data Recovery Technician.
RAID 1
RAID 1 uses mirroring method to for data storage andrequires at least two drives. It's the most basic RAID level that providesredundancy, i.e., protection against data loss due to disk failure. The datacopied to RAID 1 is stored in both drives as individual copies. Thus, if onedisk fails, you will be able to recover data from another drive.
Figure 2: RAID 1 Illustration- Mirroring Storage method is used for data storage
Dueto mirroring, RAID 1 storage is halved, i.e., you can use 50% of total disk volume with normal read/write speeds. However, unlikeRAID 0, RAID 1 can withstand up to 1 disk failure in each array without causingdata loss.
Pros
- Offers read/write speeds equivalent to SATA III harddrive
- Fault-tolerant—can withstand up to 1 drivefailure
- No overhead as data needs to be copied to a replacementdrive, not rebuild
- Affordable and easy to implement
Cons
- 50% Storage space is available for usage
- Hot swap is a problem in many software-basedRAID 1 array
Applications
- For storing critical data such as accountingfiles
- For small servers
Recovery Management
- RAID 1 can rebuild itself as quick as 30 minutesto an hour as data is copied—not rebuild—from surviving drive to the new drive.
RAID 5
RAID 5 is expensive and often used by professionals andbusinesses. Unlike RAID 0 and RAID 1, RAID 5 requires a dedicated hardwarecontroller with minimum 3 storage drives and supports maximum 16 disks. It usesstriping and parity bit data storage method to store your files across the diskarray.
It provides high read and write speeds along with redundancydue to parity bits. Parity bits are the checksum of all data stored in alldrives of RAID 5 array.
A user can utilize up to 94% of the total combined diskvolume.
The parity bit helps restore data lost due to failure of upto 1 disk in the array.
Figure 3: RAID 5- Mirroring With Parity Across Drives
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- Read data transactions are fast due to fasterread speed but write speed is a bit slower, yet decent, due to parity bitcalculation
- Fault-tolerant—can withstand up to any 1 drivefailure in the array
- Up to 94%, combined disk volume is available foruse
Cons
- Overhead on all drive after disk failure andRAID rebuild
- RAID rebuild after disk failure can take severalhours to a few days depending on the size of a failed disk
- Costly
Applications
- File and application servers
- Data warehousing
- Archiving
Recovery Management
- RAID 5 rebuild can take several hours and cause overhead,which can lead to another drive failure during, rebuild process. So beforeinserting new drive to RAID 5 array, check each disk's SMART status by using a toolsuch as Drive Monitor, CrystalDiskInfo, etc.
- Use StellarData Recovery Technician to rebuild and recover data when RAID 5 getsdamaged due to corruption or other logical errors.
RAID 6
RAID 6 is a better version of RAID 5 and is often referredas ‘RAID 5 on Steroids'. RAID 6overcomes a major issue in the RAID 5, which is the inability to survive morethan 1 disk failure. RAID 6 can withstand up to 2-disk failure without dataloss.
RAID 6 also uses striping and parity bits to store data. However,unlike RAID 5, RAID 6 stores parity bits in two disks and thus requires minimum4 disk in the array. And thus, offers balanced read/write speeds with betterredundancy.
Due to two parity bits, RAID 6 allows you to utilize up to 88%of the combined disk storage volume.
Figure 4: RAID 6- Mirroring with DUAL-Parity across drives
Pros
- Fast read data transactions
- Fault-tolerant—can withstand up to any 2 diskfailure from the array
- More secure than RAID 5
Cons
- Write data transactions are slower than RAID 5due to dual-parity data
- Drive failure affects the entire RAID array
- Rebuilding RAID array can take a very long time
Applications
- High availability solutions
- Archiving
- Large critical databases
Recovery Management
- Instead of rebuilding RAID 6 directly after a disk failure, take out other drives from the RAID array and check the SMART status of the individual drive with Drive Monitor utility to ensure disks are healthy enough to withstand the rebuild process. If SMART shows warning such as Reallocated Sector Count Warning, Pending Sector Count warning, etc. use Stellar Data Recovery Technician to rebuild RAID 5 and recover data—works if disk failure occurs due to logical errors
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RAID 10
RAID 10 is the nested RAID configuration made from acombination of RAID 1 and RAID 0. It's amirrored RAID 0 level. It uses both data striping and data mirroringstorage methods in a nested environment. Thus, it offers both higher read/writespeeds and better data redundancy than RAID 5 and RAID 6.
It requires at least 4 disks, but the total storage ishalved due to mirroring. So if you are going to use 4 1TB drives, you willessentially get 2TB usable storage. It can withstand up to 2 disk failure—onefrom either side. However, if two disks from one side fail, data will be lost and can't be recovered.
Figure 5: RAID 10- Combination of RAID 1 (Mirroring) and RAID 0 (Striping) array
Pros
- Faster rebuild time as there is no parity data
- Faster read and write speeds
- Fault-tolerant—can withstand up to 2 diskfailure from one side
Cons
- Only 50% of storage is available for use
- Most expensive RAID level compared to RAID 6which can also withstand up to 2 disks failure
Applications
- Fast database servers
- Application servers
Recovery Management
- RAID 10 can rebuild quickly after a disk failure,as data is copied from the surviving drives to the new drive — similar to RAID0. Also, there are quite fewer chances of failing two drives simultaneously fromthe same side. Thus, RAID 10 is self-sufficient in recovery.
- For recovery of corrupt and logically failedRAID 10 array, reach out to a data recovery expert.
RAID 50 & RAID 60
RAID 50 and RAID 60 are also nested RAID configurations of ‘RAID5+RAID 0' and ‘RAID 6+RAID 0'. Thus, it offers features of both RAID 5 and 6along with RAID 0's high read/write speed performance.
RAID 50 requires minimum 6 and supports maximum 48 disks insingle or multiple mirrored arrays of RAID 5.
Similarly, RAID 60 requires at least 8 disk drivesconfigured as two mirrored RAID 6 arrays
These RAIDconfigurations are used for storing large databases, archives, backups, and asapplication servers. These RAID configurations offer high availability and canwithstand up to 1 drive failure in each sub-array.
Figure 6: RAID Level comparison chart
You might be wondering where are RAID 2, RAID 3 and RAID 4.Well, they are not used anymore. And out of all RAID arrays, RAID 0, RAID 1,RAID 5 and RAID 6 are the most popular RAID levels used by various users rangingfrom a home user to a professional and businesses.
Conclusion
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While choosing a RAID level, consider your needs—do you want performance, redundancy, or both. RAID 0 and 1 are suitable for home and some power users. They are easy to set up and does not always require a hardware controller.
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While RAID 5, RAID 6, and RAID 10 or beyond are suitable forSMBs as they offer both—better read/write performance and redundancy. However,choosing between these RAID levels will entirely depend on your budget and ifyou want more performance or better redundancy.
Further, remember that relying completely on RAID can be fatal for your data. Use a RAID recovery software such as Stellar Data Recovery Technician to rebuild and recover data from a broken, damaged, corrupt, and failed RAID 0, 5 and 6 arrays in just a few clicks.
To prevent RAID from failing, use Drive Monitor, a utility that comes with Stellar Data Recovery Technician, to keep a check on RAID drive's health status and replace the impending drive before it leads to RAID failure.
