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
Содержание UniServer E3200 G3
Страница 35: ...19 Figure 29 Selecting the RAID volume to be deleted...
Страница 116: ...56 Figure 96 Controller Configuration screen...
Страница 220: ...61 Figure 109 Selecting Main Menu 2 Select Controller Management and press Enter...
Страница 243: ...84 Figure 153 Confirming the operation...
Страница 293: ...50 Figure 89 Clearing completion...
Страница 382: ...21 Figure 27 Storage controller information...
Страница 389: ...7 Figure 8 Identifying a storage controller 2...