LaCie 2big
User Manual
6.5. Safe 50
In Safe 50 mode, the two physical disks are combined
so that two logical volumes mount simultaneously on
the desktop:
One Safe volume (RAID 1) where data are automat-
❖
ically mirrored on each physical disk. This volume
uses 50% of the available capacity of each disk (the
available capacity cannot exceed 50% of the lowest-
capacity single disk). If one physical disk fails, the
data of the Safe volume are available on the second
disk.
One Big volume (concatenation) for less critical data
❖
which do not need to be mirrored on each physical
disk. The available capacity of the Big volume uses
50% of the available capacity of each disk.
disk 1
disk 2
disk 1
disk 2
Understanding RAID
disk 1
One Big volume
One Safe volume
disk 1
Fig. 6.5
Characteristics and Advantages
Provides two volumes for different data security
❖
needs.
Only 75% of total capacity is available due to
❖
mirroring on the Safe volume.
page
disk 2
disk 2