When it comes to server disk capacity optimization or data security, the sure solution for any organization is RAID.
RAID is an acronym for the term “Redundant Array of Inexpensive (or “Independent”) Disks.” In a RAID set up, the data of an organization is copied into multiple disks, thus creating a fail-proof system where data is better optimized, and data loss is prevented. A RAID system usually involves the use of two or more disks.
There are basically two ways of running RAID: the software RAID and the hardware RAID.
The hardware RAID works with a special controller. All the disks are connected to this singular controller. The RAID calculations are carried out by an onboard processor, reducing the workload on the CPU of the host system. Today’s CPUs are efficient enough to carry the extra load of the varying disks and eliminating the place of the onboard processor which is now seen by many as an obsolete method.
The software raid, on the other hand, is part and parcel of the server OS. It is cost-effective and easy to implement and maintain. It doesn’t need any additional hardware(s) (which are usually expensive) to run. All modern Unix-like operating systems and Windows operating systems support software RAID.
When it comes to choosing a RAID type, there are many options that you can select from. But how do you know the RAID type that is suitable for you?
Below is a rundown of raid types, their features, requirements, advantages, disadvantages, as well as GTHost special recommendations.
The RAID 0 is also known as disk stripping.
In RAID 0, the data is actually split between two or more disks. Some people do not even consider it as a RAID type. This is because data is not actually stored into all disks but split among the different disks. The resulting consequence is that the work the computer does is handled by multiple disks instead of one.
If your work relies more on performance speed e.g. live streaming, POV, VOD Edge Server, etc., then you should consider using the RAID 0.
RAID 1 is also known as data mirroring
In RAID, the data is duplicated into two or more drives. This mirroring effect makes for safe data storage.
If your business is more data reliant, then the RAID 1 is a valid option to hold unto.
This RAID type works through stripping by parity.
This RAID type uses stripping just like RAID 0 but with the added advantage of parity. While data is spread across all disks, a little bit of space (one third) of each disk is used to save parity information: a small amount of data that can be used to describe and recreate a larger amount. So if a disk crashes, it can be replaced easily using the parity information.
This can be done without disrupting the functionality of the server or NAS.
RAID 5 has performance, speed, and redundancy. This makes it an option for anyone who wants to achieve speed and data security on the go. It would prove very useful for file storage servers and application servers.
RAID 6 is similar to RAID 5 except that the former offers double parity.
The RAID 6 stores an extra parity block that offers more data security and reliability. With this, you can have two disks down and still have your server running.
With better performance and security, RAID 6 is a good choice for large file storage servers and application servers.
RAID 10 is the combination of RAIDs 1 and 0(RAID 1+0). The resultant is the hybrid of stripping and mirroring.
This hybrid has the redundancy of RAID 1, and the increased performance of RAID 0, making it a more effective option.
With the best of both worlds in security and performance, the RAID 10 is the best pick if you require optimal security and performance.
These are not all of the RAID types out there, but the best in every possible category. Making a choice for your organization’s data is now in your hands. Find the RAID that suits your needs.
Also, remember that RAID is not an alternative to having your data backed up in a safe drive or cloud. GTHost advises.