NEC Express 5800 User Manual page 333

Ex: Migration with addition for RAID5 virtual disk
The figure below shows an example of adding a single 146GB HDD to a RAID5 virtual disk
configured with three 146GB HDDs.
146GB
146GB
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 disks are defined in one disk group
● During Reconstruction, the processing rate is decreased due to
heavy load.
● The Reconstruction can be performed for the degraded virtual disk.
However, it is recommended to execute Rebuild to recover the
virtual disk, then execute Reconstruction.
● During Reconstruction, do not shutdown or reboot the server.
● In some configuration, Background Initialize may start
automatically upon completion of Reconstruction.
Virtual disk(RAID5)
146GB 146GB
Virtual disk(RAID5)
146GB 146GB
【Before execution】
Capacity=292GB
146GB
Execute Migratioon with addition
【Before execution】
Capacity=438GB
146GB
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