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LaCie 2big
User Manual
3. RAID
3.1. About 2big Dual RAID Modes
This section will help you decide which RAID mode
is right for your application.
Fast (RAID 0),
❖
Big,
Section 3.1.2
❖
JBOD,
Section 3.1.3
❖
Safe 100 (RAID 1),
❖
Safe 50,
Section 3.1.5
❖
Safe 33,
Section 3.1.6
❖
3.1.1. FAST (RAID 0)– Preconfigured mode of the 2big
■
In Fast mode, the two physical disks are striped
together (RAID 0) so that one larger logical volume
mounts on the desktop, offering the maximum possible
capacity like in Big mode (the available capacities of
each disk are cumulated) yet with greater speed than the
Big mode (the speed of each disk are cumulated to a
certain level).
ImpOrTANT INfO:
data of both disks become inaccessible.
Characteristics and Advantages
Offers the maximum possible capacity
❖
Greater speed (than Big mode)
❖
Section 3.1.1
Section 3.1.4
If one physical disk fails, the
Capacity varies depend-
TeChNICAl NOTe:
ing upon RAID mode.
Big, Fast and JBOD = total accessible capacity
❖
Safe 100 (RAID 1) = 50% capacity
❖
Safe 50 (RAID 1) = 75% capacity
❖
Safe 33 (RAID 1) = approximately 83% capacity
❖
One Fast volume
disk 1
Fig. 3.1.1
RAID
page 20
disk 2
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