Switching The Mode Of The Built-In Disk (Raid) - I-O DATA HFAS1-XS20U Setup Manual

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 to increase safety.
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.
2.8.1 Modes
This unit supports three modes.
Mode
*1
Available capacity
*2
Duplication of music
*3
Read/write speed
*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.
Confirming the current mode.
You can see the [RAID mode] in
Note that the mode at the time of purchase is as shown below.
Product Number
HFAS1-XS20U
HFAS1-S10U
2.8.2. Backing Up before Switching
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
Go to [Table of Contents]
2. Getting More out of this Unit – 2.8. Switching the Mode of the Built-in Disk (RAID)
Spanning
Very good
none
Good
3.2. SYSTEM INFORMATION
Mode
Striping
Spanning
22
Striping
Very good
none
Very good
here.
Available capacity
2 terabytes
1 terabyte
Mirroring
Good
Very good
Good
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