MSI 915GM-FR User Manual - Page 65

RAID 1 Mirroring, JBOD Spanning

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Introduction to VIA VT6410 IDE RAID RAID 1 (Mirroring) RAID 1 writes duplicate data onto a pair of drives and reads both sets of data in parallel. If one of the mirrored drives suffers a mechanical failure or does not respond, the remaining drive will continue to function. Due to redundancy, the drive capacity of the array is the capacity of the smallest drive. Under a RAID 1 setup, an extra drive called the "spare drive". can be attached. Such a drive will be activated to replace a failed drive that is part of a mirrored array. Due to the fault tolerance, if any RAID 1 drive fails, data access will not be affected as long as there are other working drives in the array. JBOD (Spanning) A spanning disk array is equal to the sum of the all drives when the drives used are having different capacities. Spanning stores data onto a drive until it is full, then proceeds to store files onto the next drive in the array. W hen any disk member fails, the failure affects the entire array. JBOD is not really a RAID and does not support fault tolerance. 4-3

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Introduction to VIA VT6410 IDE RAID
4-3
RAID 1 (Mirroring)
RAID 1 writes duplicate data onto a pair of drives and reads both sets of data
in parallel. If one of the mirrored drives suffers a mechanical failure or does not
respond, the remaining drive will continue to function. Due to redundancy, the drive
capacity of the array is the capacity of the smallest drive. Under a RAID 1 setup, an
extra drive called the
“
spare drive
”
. can be attached. Such a drive will be activated to
replace a failed drive that is part of a mirrored array. Due to the fault tolerance, if any
RAID 1 drive fails, data access will not be affected as long as there are other working
drives in the array.
JBOD (Spanning)
A spanning disk array is equal to the sum of the all drives when the drives
used are having different capacities. Spanning stores data onto a drive until it is full,
then proceeds to store files onto the next drive in the array. When any disk member
fails, the failure affects the entire array. JBOD is not really a RAID and does not
support fault tolerance.