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Hard Disk Drive Capacities (ServeRAID)



Hard Disk Drive Capacities


The drives in the disk array can be of different capacities (for example, 1GB or 2GB), however, they are treated in the disk array configuration as if they all have the capacity of the smallest disk drive. Therefore, if you have four drives of 1GB, 1GB, 1BG and 2GB grouped in one disk array, the total capacity of the array is 1GB times 4, or 4GB (instead of the 5GB physically available).

Note:
  1.  The total capacity of the array without protection would be 4GB. With RAID level 5, the usable data capacity would be 3GB.
  2.  When referring to hard-disk-drive capacity, GB means 1.000.000.000 bytes, total user-accessible capacity may vary depending  on operating environment.


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