TowerRAID TR5UT+/TR5UT+B User’s Manual
Ver. 091007
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If one drive fails, the virtual R5 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. A message appears in the LED indicator to notify you that a rebuild is in progress.
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 virtual R5 volume during the rebuild, the rebuild process
will take a longer time to complete, and the host data transfer performance will also be affected.
TR5UT+ / TR5UT+B