Spanned volume

Spanned volume

A spanned volume is a formatted partition which data is stored on more than one hard disk, yet appears as one volume. In Windows NT, this is called a volume set. Unlike RAID, spanned volumes have no fault-tolerance, so if any disk fails, the data on the whole volume could be lost. Additionally, the system or boot partitions cannot be included in a spanned volume. FAT16/32 and NTFS file systems may be used, and the volume can span up to 32 hard disks.

Spanned volumes are the equivalent of Concatenation (JBOD) in hardware RAID systems.

ee also

Spanned volume is one of the Advanced feature in latest Adaptec SAS controllers.

Disc spanning


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