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LaCie 2big
User Manual
3.1.6. SAFE 33
■
In Safe 33 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 33% of the available capacity of each disk (the
available capacity cannot exceed 33% of the lowest-
capacity single disk).
ImpOrTANT INfO:
data of the SAFE volume are available on the second
disk. Only 16% of data (the data on the SAFE volume)
are saved if a disk fails.
disk 1
disk 2
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
66% of the available capacity of each disk.
disk 1
disk 2
If one physical disk fails, the
disk 1
disk 1
One Big volume
One Safe volume
disk 2
Fig.3.1.6
Characteristics and Advantages
Provides two volumes for different data security
❖
needs.
Approximately 83% of total capacity is available
❖
due to mirroring on the Safe volume.
disk 2
RAID
page 23
disk 1
disk 2
disk 1
disk 2
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