NEC Express5800/B120a, User Manual

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4-44 Configuring Your Server
IMPORTANT:
Note the following for the Reconstruction:
„
Be sure to make backup copy of data and perform Consistency
Check before starting Reconstruction.
„
The Reconstruction is disabled in the configuration where several
virtual drives are defined in one disk group
„
During Reconstruction, the processing rate is decreased due to much
load.
„
The Reconstruction may be performed for the degraded or partially
degraded virtual drive. However, it is recommended to execute
Rebuild to recover the virtual drive, then execute Reconstruction.
„
During Reconstruction, do not shutdown or reboot the server. If the
server is shutdown by an unforeseen accident such as power
interruption, turn on the power again as soon as possible. The
Reconstruction is automatically restarted.
„
In some configuration, Background Initialize may start
automatically upon completion of Reconstruction.
Ex: Migration with addition for RAID0 virtual drive
The figure below shows an example of adding a single 36GB HDD to a RAID0 virtual drive
configured with a single 36GB HDD to make data redundancy available.
36GB
[Before execution]
Capacity = 36GB
Virtual drive (RAID0)
36GB
36GB 36GB
Execute Migration with addition
[After execution]
Capacity = 72GB
Virtual drive (RAID0)