Redundant Array of Independent Disks, or RAID, is a way of keeping content on several hard drives simultaneously. A RAID could be software or hardware depending on the hard drives which are used - physical or logical ones, but what is common between them is that they all perform as just one single unit where data is kept. The main advantage of using a RAID is redundancy as the info on all the drives will be the same all the time, so even in the event that one of the drives fails for some reason, the information will still be available on the remaining drives. The general performance will also improve as the reading and writing processes could be split between a number of drives, so a single one can't be overloaded. There're different kinds of RAIDs where the effectiveness and fault tolerance could differ depending on the specific setup - whether your data is written on all of the drives in real time or it is written on a single drive and after that mirrored on another, the number of drives are used for the RAID, and so on.

RAID in Cloud Hosting

All the content which you upload to your new cloud hosting account will be stored on fast SSD drives that function in RAID-Z. This setup is built to employ the ZFS file system that runs on our cloud hosting platform and it adds another level of security for your website content on top of the real-time checksum authentication that ZFS uses to guarantee the integrity of the data. With RAID-Z, the information is saved on a couple of disks and at least 1 is a parity disk - whenever info is recorded on it, an additional bit is added, so in the event that any drive fails for whatever reason, the integrity of the data can be verified by recalculating its bits based on what is stored on the production hard drives and on the parity one. With RAID-Z, the functioning of our system will not be interrupted and it will continue working smoothly until the malfunctioning drive is replaced and the info is synced on it.

RAID in Semi-dedicated Servers

In case you host your sites within a semi-dedicated server account from our company, any content that you upload will be held on SSD drives which work in RAID-Z. With this kind of RAID, at least 1 of the drives is used for parity - when data is synced between the disks, an extra bit is added to it on the parity one. The purpose behind this is to guarantee the integrity of the data which is copied to a new drive in case one of the hard drives in the RAID stops working since the website content being copied on the brand new disk is recalculated from the information on the standard drives and on the parity one. Another advantage of RAID-Z is the fact that even in case a hard drive stops working, the system can switch to another one instantly without service interruptions of any kind. RAID-Z adds an additional level of security for the content which you upload on our cloud Internet hosting platform together with the ZFS file system that uses unique checksums to authenticate the integrity of every single file.

RAID in VPS Servers

The SSD drives which we use on the machines where we generate VPS servers function in RAID to ensure that any content you upload will be available and intact at all times. At least 1 drive is employed for parity - one bit of info is added to any data copied on it. If a main drive fails, it is replaced and the data which will be cloned on it is calculated between the remaining drives and the parity one. It's done this way to make sure that the correct info is copied and that no file is corrupted because the new drive will be included in the RAID afterwards. We also use hard drives functioning in RAID on the backup servers, so in case you add this upgrade to your VPS package, you shall use an even more reliable hosting service because your content will be available on multiple drives irrespective of any unexpected hardware failure.