Biostar A58M Manuale Proprietario

 

In a RAID 0 system data are split up in blocks that get 
written across all the drives in the array. By using multiple 
disks (at least 2) at the same time, this offers superior I/O 
performance. This performance can be enhanced further 
by using multiple controllers, ideally one controller per 
disk. 

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Drives: Minimum 2, and maximum is up to 6 or 8. Depending on the platform. 

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Uses: Intended for non-critical data requiring high data throughput, or any 
environment that does not require fault tolerance. 

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Benefits: provides increased data throughput, especially for large files. No capacity 
loss penalty for parity. 

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Drawbacks: Does not deliver any fault tolerance. If any drive in the array fails, all 
data is lost. 

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Fault Tolerance: No. 

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Total Capacity: (Minimal. HDD Capacity) x (Connected HDDs Amount) 

 

Data are stored twice by writing them to both the data 
disk (or set of data disks) and a mirror disk (or set of 
disks). If a disk fails, the controller uses either the data 
drive or the mirror drive for data recovery and continues 
operation. You need at least 2 disks for a RAID 1 array. 

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Drives: Minimum 2, and maximum is 2.   

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Uses: RAID 1 is ideal for small databases or any other application that requires fault 
tolerance and minimal capacity. 

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Benefits: Provides 100% data redundancy. Should one drive fail, the controller 
switches to the other drive. 

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Drawbacks: Requires 2 drives for the storage space of one drive. Performance is 
impaired during drive rebuilds. 

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Fault Tolerance: Yes.