ARCTICROC 4T – 4Bay RAID System - User Manual
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HDD is being accessed, the blue LED will flash. When HDD is healthy and not being accessed,
NO LED color will be ON.
Indicator
HDD (1, 2, 3, 4)
RAID mode
Left
(Connection)
Right
Color 1
(Health)
Color 2
(Access)
Disk error
None
Red
None
RAID 0, RAID 1,
RAID 5, RAID 0+1
Data access
White
None
Flash Blue
RAID 0, RAID 1,
RAID 5, RAID 0+1
Disk
Rebuild
Source HDD
White
None
Blue
RAID 1, RAID 5,
RAID 0+1
Target HDD
Blink White
None
Blue
RAID 1, RAID 5,
RAID 0+1
The difference between a flashing LED and a blinking LED is that flashing refers to the
read/write activity and blinking refers to slow but regular pulses.
SAFE REMOVAL OF THE RAID SYSTEM
Safe removal of the RAID System from the host controller is highly recommended, especially
when switching interfaces. In order to safely remove your RAID System from the host
controller, you would need to remove the device from your host controller.
Most current USB host controllers handle USB and FireWire devices as external
devices; thus, it is highly recommended that the RAID System be safely removed from
the host if you are using the USB or FireWire interface. However, if you are using the
eSATA interface, the host, depending on the eSATA controller, may handle external eSATA HDD
devices as internal HDD devices. Thus, if using a PC System, safe removal of the RAID System
from the host is necessary. If using a Mac System, safe removal of the RAID System from the
host is unnecessary.
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