Thecus Black Data Storage 4 bays N4100B Leaflet

Product codes
N4100B
Page of 81
Thecus N4100 IP Storage Appliance 
 
57
 
Choosing a RAID Level 
The Thecus N4100 supports standard RAID levels 0, 1, and 5. You choose a RAID level when you create a 
system volume. The factors for selecting a RAID level are: 
•  Your requirements for performance 
•  Your need for data security 
•  Number of hard disk drives in the system 
•  Capacity of hard disk drives in the system 
The following is a description of each RAID level and its pros and cons: 
RAID Application 
 
Pros Cons 
No. of 
HDDs 
Fault 
Tolerant
Best suited for non-critical data that 
requires high performance. 
Description: Data is divided into 
blocks and sequentially distributed. 
High performance 
for large files 
If any HDD fails, 
all data is lost 
1~32 No 
Best suited for read-intensive fault-
tolerant systems. 
Description: Data is duplicated on 
another HDD (mirroring). 
100% Data 
Security 
Half the hard disk 
space available. 
Performance 
impaired during 
rebuild.   
2 Yes 
Best suited for high read volume, low 
write volume applications such as 
transaction processing. 
Description: Disk striping and parity 
data across all HDDs. 
Low cost data 
security 
Performance not 
as high as RAID 
0 or RAID 1 
3~32 Yes