Biostar IDEQ 330P, Supplementary Manual

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RAID 1:
Every read and write is actually carried out in parallel across 2 disk drives in a RAID 1 array
system. The mirrored (backup) copy of the data can reside on the same disk or on a second
redundant drive in the array. RAID 1 provides a hot-standby copy of data if the active volume or
drive is corrupted or becomes unavailable because of a hardware failure.
RAID techniques can be applied for high-availability solutions, or as a form of automatic backup
that eliminates tedious manual backups to more expensive and less reliable media.
Features and Benefits
Drives: Minimum 2, and maximum is 2.
Uses: RAID 1 is ideal for small databases or any other application that requires
fault tolerance and minimal capacity.
Benefits: Provides 100% data redundancy. Should one drive fail, the controller
switches to the other drive.
Drawbacks: Requires 2 drives for the storage space of one drive. Performance
is impaired during drive rebuilds.
Fault Tolerance: Yes.
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Spanning (JBOD):
JBOD stands for “Just a Bunch of Disks”. Each drive is accessed as if it were on a standard
SCSI host bus adapter. This is useful when a single drive configuration is needed, but it offers
no speed improvement or fault tolerance.
Features and Benefits
Uses: JBOD works best if you have odd sized drives and you want to combine
them to make one big drive.
Benefits: JBOD provides the ability to combine odd size drives using all of the
capacity of the drives.
Drawbacks: Decreases performance because of the difficulty in using drives
concurrently.
Fault Tolerance: Yes.
°∞ For more detailed setup information, please refer to the Driver CD, or go to
http://www.nvidia.com/page/pg_20011106217193.html to download NVIDIA nForce Tutorial
Flash.
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