5
Figure 6 RAID 1
Application scenarios
RAID 1 is useful when high performance and data protection are more important than the cost of
physical drives.
Advantages
•
Has the highest security performance among all RAID methods.
•
No data is lost as long as no failed drive is mirrored to another failed drive.
•
Up to half of the physical drives in the array can fail.
Disadvantages
•
This method is expensive as it needs many drives for fault tolerance.
•
Only half of the total drive capacity is usable for data storage.
RAID 1E
RAID 1E enhances RAID 1. RAID 1E not only mirrors data but also stripes data. RAID 1E can
mirror data for an odd number of drives, as shown in
Summary of Contents for UniServer B5700 G3
Page 35: ...19 Figure 29 Selecting the RAID volume to be deleted...
Page 116: ...56 Figure 96 Controller Configuration screen...
Page 220: ...61 Figure 109 Selecting Main Menu 2 Select Controller Management and press Enter...
Page 243: ...84 Figure 153 Confirming the operation...
Page 293: ...50 Figure 89 Clearing completion...
Page 382: ...21 Figure 27 Storage controller information...
Page 389: ...7 Figure 8 Identifying a storage controller 2...