Redundant Array of Independent Disks, or RAID, is a way of saving content on multiple hard disks concurrently. A RAID could be software or hardware depending on the HDDs which are used - physical or logical ones, still what is common between them is the fact that they all work as a single unit where information is saved. The biggest advantage of using a RAID is redundancy because the data on all the drives will be exactly the same all of the time, so even in case a drive fails for some reason, the data will still be available on the rest of the drives. The overall performance is enhanced as well since the reading and writing processes could be split between various drives, so a single one won't be overloaded. There are different sorts of RAIDs where the effectiveness and fault tolerance may vary according to the exact setup - whether information is written on all the drives in real time or it is written on one drive and then mirrored on another, what amount of drives are used for the RAID, and many others.

RAID in Cloud Web Hosting

All of the content which you upload to your new cloud web hosting account will be held on fast SSD drives that work in RAID-Z. This setup is built to employ the ZFS file system that runs on our cloud Internet hosting platform and it adds an additional level of protection for your content on top of the real-time checksum authentication which ZFS uses to ensure the integrity of the data. With RAID-Z, the info is saved on a couple of disks and at least one of them is a parity disk - whenever info is written on it, an additional bit is added, so if any drive stops working for some reason, the integrity of the information can be verified by recalculating its bits in accordance with what is saved on the production disks and on the parity one. With RAID-Z, the operation of our system will not be interrupted and it'll continue operating smoothly until the faulty drive is changed and the data is synced on it.

RAID in Semi-dedicated Hosting

The RAID type which we employ for the cloud web hosting platform where your semi-dedicated hosting account will be created is named RAID-Z. What is different about it is that at least one of the disks is used as a parity drive. In simple terms, whenever any data is duplicated on this particular hard drive, one more bit is included to it and if a faulty disk is changed, the data which will be duplicated on it is a combination of the data on the remaining disk drives in the RAID and that on the parity one. We do this to make sure that your data is intact. Throughout this process, your sites will be up and running normally because RAID-Z makes it possible for a whole drive to fail without service disturbances and it simply uses one of the remaining ones as the main production drive. Employing RAID-Z together with the ZFS file system that uses checksums to warrant that no data will get silently corrupted on our servers, you won't ever have to worry about the integrity of your files.