Promise Technology 150TX2 - Manual (Page 26)

FastTrak S150 TX2plus User Manual
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Note
FastTrak S150 TX2plus permits striped arrays using 1, 2, 3,
or 4 drives attached in Auto Setup mode.
Under the Security setting, FastTrak S150 TX2plus permits
two drives to be used for a single Mirrored array or four
drives to be used for a Mirrored/Striped array in Auto Setup.
Security
(RAID 1 Mirroring, or RAID 0+1 Striping/ Mirroring) creates a mirrored (or fault
tolerant) array for data security. The storage capacity equals one-half the
number of drives times the capacity of the smallest drive in the disk array.
Note
Under the Security setting, FastTrak S150 TX2plus permits
two drives to be used for a single Mirrored array or four
drives to be used for a Mirrored/Striped array in Auto Setup.
Security and Performance
RAID 0+1 (Striping/Mirroring) creates an array with striping for high performance
plus mirroring for fault tolerance and data security. The storage capacity equals
the number of drives times the capacity of the smallest drive in the disk array.
This option requires 4 drives.