Spanned volume
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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.
[edit] See also
Spanned volume is one of the Advanced feature in latest Adaptec SAS controllers.
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