Building.raid.arrays; Notes On Building A Raid Array; What Is Raid - Buffalo HD-WLU3R1 Benutzerhandbuch

The two internal hard drives of the DriveStation can be configured into a RAID array for use as a single
hard drive. The RAID array can also be reset and rebuilt using the procedures below.

Notes on Building a RAID Array

• When building a RAID array, connect the DriveStation with a USB cable and disconnect all other USB
devices. The RAID array may not be built correctly if other USB devices are connected.
• When building a RAID array, all data stored on the DriveStation is lost. Be sure to back up your data
before building the RAID array.

What is RAID?

RAID is a system of combining multiple hard drives for use as a single hard drive, increasing hard drive
speed, and enabling easy recovery in the event of hard drive failure. The DriveStation uses two hard
drives to build the RAID. The RAID level is determined based on how the hard drives are combined. The
RAID levels supported by the DriveStation are shown below.
■ RAID 0 Mode (Enables use as a high-speed, large-capacity
hard drive)
This mode uses the two hard drives as a single large-capacity hard drive. Data is distributed and written
to the two hard drives simultaneously for faster access.
The OS recognizes this as a large single drive with a capacity equal to the sum of the two hard drives.
RAID 0 does not provide a mechanism for protecting data. As a result, failure of any hard drive will result
in the loss of all data on the array.
• Example of Hard Drive Configuration
Configuration using HD-WL2TU3R1: Recognized as 2 TB (1 TB×2) hard drive
Data
①②③④
⑤⑥⑦⑧
Enables use as a high-
speed, large-capacity
hard drive
12
HD-WLU3 User Manual
Building RAID Arrays
Data is distributed
and saved to two hard
drives.
The total capacity of
two drives is usable.
Data
①③⑤⑦
Data
②④⑥⑧