The Digital Rescue Blog

How RAID systems work

Adding a RAID system to your storage configurations is one of the most cost-effective ways of ensuring both protection and accessibility of your data.

RAID is not the acronym of the well-known French police force, but the acronym for a storage system made up of several physical media.

RAID, for “Redundant Array of Independent Disks”, is storage virtualization. In this article, I'll describe the various RAID systems commonly found. For the sake of simplicity and convenience, I'll always refer to RAID systems based on hard disks (SATA, SCSI or SAS). However, it is perfectly possible to set up RAID systems using SSDs or USB sticks, for example.

Monolith – Memory Card

A 32 GB memory, that is over 256 billion bits of information stored in 1 cm², thanks to electrons trapped in a 'grid'.

The first ransomware

In order to fraudulently obtain over one billion dollars in 2016, hackers did not hesitate to flood the world with infected emails. More than 40% of global spam contains a ransomware.

Hard disk operation

The precision of a read head is comparable to that of a Boeing 747 flying at 272 km per second, less than a centimeter above the ground, while being able to count every single blade of grass.