Raid 1 (Safe - Data Protection); Rebuilding The Raid 1 Mirror On A Replacement Disk - LaCie 2big USB 3.0 User Manual

LaCie 2big USB 3.0
User Manual
3.1.3.

RAID 1 (SAFE - Data protection)

In RAID 1, the two physical disks are mirrored together so that one
single logical volume mounts on the desktop. Please note that the
combined storage will not exceed the available capacity of the
lowest-capacity single disk.
All data is saved simultaneously on each disk
physical disk fails, the data is available immediately on the second
disk. No data is lost if one disk fails.
Applications
✦ Maximum data safety
✦ RAID 1 reduces the total available capacity by 50%
because two copies of the data are saved.
3.1.3.1. Rebuilding the RAID 1 Mirror on a
Replacement Disk
LaCie highly recommends inserting a replacement disk while the
2big USB 3.0 is powered on. The RAID 1 will recognize the disk
and automatically mirror the data from the active drive.
You may encounter difficulty rebuilding the RAID 1 mirror when
inserting a replacement drive while the 2big USB 3.0 is off. Try to
re-insert the replacement disk while the 2big USB 3.0 is powered
on.
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DESIGN BY NEIL POULTON
(Fig. 12). If one
A1
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D1
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Disk 1
Fig. 12
CAUTION: Your LaCie 2big USB 3.0 comes preconfigured in
RAID 0, which provides faster transfer rates and allows access to
the whole storage capacity. Unlike RAID 1, it does not provide any
security. If a drive fails, all data will be lost. If you are concerned
about data security, LaCie highly recommends changing your
2big USB 3.0 to RAID 1. See section
more information.
RAID
page 16
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Disk 2
3.1. About RAID Modes, for