Vantec NexStar MX, Руководство пользователя

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RAID 1
：
It allows the device automatically to copy data to both hard drives. It stores all data in duplicate on
separate drives to protect against data loss due to drive failure. It provides the highest level of data
protection for critical data that you cannot afford to lose if a hard drive fails. The capacity is equal to the
smaller of the two hard drives. If one drive fails, the SAFE volume is still usable, but it is in a vulnerable
state because its mirrored hard drive is inaccessible. When the offline drive comes back online, the
appliance begins a rebuild process immediately to restore data redundancy. Although the volume remains
available during the rebuild process, the volume is susceptible to data loss through damage to the
remaining drive until redundancy is restored at the end of the rebuild and verification process. Host access
takes precedence over the rebuild process. If you continue to use the SAFE volume during the rebuild, the
rebuild process will take a longer time to complete, and the host data transfer performance will also be
affected.
Drive A
250GB
Drive B
250GB
NST-400MX-SR
Port 0 Port 1
Drive A
250GB
NST-400MX-SR
Port 0 Port 1
Raid 1
250GB
Raid 1
250GB
Unequal hard drives Equal hard drives
750GB
Drive A
18
RAID Mode Selection