I-O DATA FIDATA HFAS1-S10U, Setup Manual

Page: 22 / 46

22 Go to [Table of Contents]
2. Getting More out of this Unit – 2.8. Switching the Mode of the Built-in Disk (RAID)
2.8. Switching the Mode of the Built-in Disk (RAID)
The two internal disks that are installed in this unit operate in several modes (RAID mode).
By switching the mode, you can increase the capacity that can be utilized or duplicate
music.
However, you will need to format (initialize) the built-in disk in accordance with the mode,
and so if you switch the mode then the music on this unit will be lost.
When you switch the mode, the music on this unit will be lost.
Therefore, please use a USB HDD and back up the music on this unit.
>> 2.7.2. Registering the USB HDD as a backup one 18
This unit supports three modes.
Mode Spanning Striping Mirroring
Available capacity
*1
Very good Very good Good
Safety of music
*2
— — Very good
Read/write speed
*3
Good Very good Good
*1 With mirroring, music is written on each of the two internal disks, and so the available capacity will be
that of one built-in disk. Therefore, if mirroring is currently set then switching to another mode will double
the capacity available for use.
*2 With mirroring, music is written on each of the two internal disks, and so you will not lose any music
even in the unlikely event that one disk fails.
(Our repair center handles requests for replacing the internal disk. Note that the music will be lost if both
of the built-in disks have failed.)
*3 With striping, music is written on the two internal disks by being distributed over them, and so the read
and write speed is faster.
2.8.1 Modes
2.8.2. Backing Up before Switching
Confirming the current mode.
You can see the [RAID mode] in 3.2. SYSTEM INFORMATION here.
Note that the mode at the time of purchase is as shown below.
Product Number Mode Available capacity
HFAS1-S10U Spanning 1 terabyte