Thecus 1.5TB Server N3200 N3200_3050 Leaflet

 

 
 

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RAID 1 mirrors all data from one hard disk drive to a second one hard disk drive, 
thus providing complete data redundancy. However, the cost of data storage 

capacity is doubled.  
 

This is excellent for complete data security. 

RAID 5 offers data security and good performance. It is best suited for networks 

that perform many small I/O transactions at the same time, as well as 
applications that require data security such as office automation and online 

customer service. Use it also for applications with high read requests but low 
write requests. 

 

RAID 5 includes disk striping at the byte level and parity information is written to 
several hard disk drives. If a hard disk fails the system uses parity stored on each 

of the other hard disks to recreate all missing information. 

Although a concatenation of disks (also called JBOD, or "Just a Bunch of Disks") is 

not one of the numbered RAID levels, it is a popular method for combining 
multiple physical disk drives into a single virtual one. As the name implies, disks 

are merely concatenated together, end to beginning, so they appear to be a 
single large disk. 

 
As the data on JBOD is not protected, one drive failure could result total data loss. 
 

The length of the data segments being written across multiple hard disks. Data is 
written in stripes across the multiple hard disks of a RAID. Since multiple disks 
are accessed at the same time, disk striping enhances performance. The stripes 

can vary in size.   

When all 3 disks are of the same size, and used in RAID, N3200 disk usage 
percentage is listed below: 

 

RAID 0 

100% 

RAID 1 

50% 

RAID 5 

66% 

JBOD 100%