A disk array is a disk storage system which contains multiple disk drives. It is differentiated from a disk enclosure, in that an array has cache memory and advanced functionality, like RAID and virtualization.
Components of a typical disk array include:
Typically a disk array provides increased availability, resiliency and maintainability by using additional, redundant components (controllers, power supplies, fans, etc.), often up to the point when all single points of failure (SPOFs) are eliminated from the design. Additionally those components are often hot-swappable.
Typically, disk arrays are divided into categories:
   | Infortrend - Infortrend EonStor RAID subsystems support all storage interfaces including SCSI, Fibre Channel, SATA and SAS. |
| | DataCore Software Corporation - DataCore | DataCore is to Storage Virtualization what VMWare is to Server Virtualization |
| | Datacore Software Corporation - DataCore | Storage Virtualization and SAN Management Software |
| | Terminology - IT related goods and services for businesses and enterprises |
| | RAID for Red Hat - RAID (Redundant Array of Independent Disks) |
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