LaCie 2BIG NAS User Manual page 263

5BIG NAS PRO: RAID OPTIONS
Choose the level of RAID to learn how it works with your NAS.
LaCie SimplyRAID
Most RAID modes use equal disk capacities among the pool of hard drives to protect data. Rather then lose
storage capacity overhead in mixed disk environments, SimplyRAID preserves the extra space for use when new
disks are added to the enclosure. This means that, unlike standard RAID models, you can easily expand the
array without losing data. For example, two 1TB disks will create a RAID 1 array without any disk capacity
overhead. However, one 1TB disk paired with one 2TB disk can only create 1TB of protection since data cannot
surpass the storage capacity of the smallest disk. SimplyRAID will calculate the overhead and prepare it for
future disk expansion.
LaCie 2big NAS | LaCie 5big NAS Pro User Manual 263