BIOS BR256, User Manual, Page: 15 / 110

BR256
（
eSATA+USB3.0
）
model User Manual
－
14
－
⑤
RAID MODE 1
⑥
RAID 0 - 2 DRIVE MODE
⑦
RAID 1 - 3 DRIVE MODE
⑧
RAID MODE 10
⑨
SINGLE DRIVE MODE
Data Drive
Data Drive
Data Drive
Only one drive is used. Data cannot be recovered if the
drive is failed
In general, Data at RAID 1 is written to two drives at the same
time and read from one or both of drives.
Capacity is half the of the total physical disk capacity
Only two drives
RAID-0 mode. (The rest of four drives
cannot be used)
There is no parity so the data cannot be recovered if any of
drive fault.
Data Drive
Three drive mirroring mode. Similar to RAID MODE1, Data is
written to all of three drives and read only from one or two
drives. Even two drives failed, the data can still be accessible.
The rest of three drives cannot be used.
It is the combination of RAID-0 and RAID-1.
Performance and security can be raised.
Stripe across mirrored Drive 0, 1 and Drive 2, 3
Capacity is equal to 2 drives capacity. Data can be accessed
even one of both mirrored pair drives failed. The rest of two
drives cannot be used.
Data Drive
Data Drive