NOTE:
NOTE:
All data previously stored on the hard drive will
be lost! Please back up all data to a separate
storage before continuing.
RAID 1:
This mode allows the device to automatically
copy data to 2 hard drives. It stores all data in
duplicate 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. Switching
to this mode will prompt to initialize and format
the hard disks. This will not work to create a
mirror set from existing 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.
( figure 7-G)
( figure 7-G)
14
RAID Mode Configuration
ON
RAID 1
ON
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