A disk array is a storage system that has multiple disk drives. A disk array is more than just a simple disk enclosure and includes the following features: an array of disk controllers, cache memory, disk attachments, and a power supply.
The disk array has five categories: network attached storage (NAS), an array of network storage area (SAN), monolithic SAN, storage virtualization, and SAN utility. Network Attached Storage arrays have their own Local Area Network (LAN) IP address and provide file-level disk storage access via protocols such as Common Internet File System (CIFS), Network File System (NFS) or usb hard drive data recovery
The second form of the disk array is the storage area of the modular array network. They are different from LANs and wide networks (WANs) and special networks used to connect one or more servers to a storage source. It provides block-level access through the Small Computer System Interface (SCSI) protocol via fiber channel and SCSI Internet (iSCSI).
A monolithic SAN array is a third type of disk array. Unlike the Modular SAN, they are suitable for operations that do not fit the standard shelf cabinets and are consequently widely used by large-scale companies. They are deployed in enterprise-class storage systems using Enterprise Connection System (ESCON) and Fiber Fibers (FICON) protocols.
Storage virtualization runs on an open source platform and has software that adds functionality to disk array controllers for virtualization processes.
The main purpose of the disk array is to improve the availability, resilience, and storage capabilities of data storage. Excessive use of components such as controllers, power supplies, and fans helps meet this goal. The disk array eliminates a single point of failure and provides great redundancy. The disk range has a higher satisfaction rating and better accountability.
Ways of working
NAS disk arrays provide access to heterogeneous networks for file-level data storage. The only goal is to provide device-based data files across the network. They are implemented as standalone systems. The NAS unit stores data provides access to stored data and implements the file system. This is controlled and configured by the browser from another computer. A dedicated computer that acts as a file server is also a NAS unit. The NAS array is configured with one or more disks that are logically arranged into the Redundant Array of Independent Disks (RAID) array.
NAS provides storage systems and temporary files SAN only provides block-level storage access, letting the file processing to the client. However, they can be mixed to form a hybrid SAN-NAS implementation. Therefore, both can be applied simultaneously to the same system using the same physical space.
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