In computer technology, the term "spanned" refers to a method of storing data across multiple physical devices in a logical sequence to create a larger storage capacity. This is also known as disk spanning or disk striping.
In a spanned setup, data is written sequentially across multiple hard drives, as if they were a single drive, rather than just using one drive. It works by splitting the data into smaller segments or blocks, and allocating them to each of the connected drives.
The main benefit of spanned storage is that it increases the overall storage capacity of a system. However, it does not provide any redundancy or data protection in case of drive failure. Therefore, it is important to backup data regularly and have a plan for potential hardware failures in a spanned setup.
Spanning is commonly used in RAID (Redundant Array of Independent Disks) setups, which combine multiple hard drives to increase performance and/or data reliability. In a RAID 0 configuration, data is striped across two or more drives to improve read and write speeds. In a RAID 5 or RAID 6 setup, data is distributed across multiple drives with parity information to protect against data loss in case of a drive failure.
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