32
Rear Panel LEDs and Buttons
1
Status
Green
Orange
Off = The system is powered off.
Green = The system is operating normally.
Flashing green = The system is booting.
2
Fan
Green
Orange
Green = The fan is operating normally.
Orange = There is an error or the fan is damaged.
Off = The system cannot detect any fans.
3
Connection Status
Green
Orange
Green = The expansion unit is operating normally
and is connected to the NAS using dual-path configuration.
Orange = The NAS detects the expansion unit, but it is
not connected using dual-path configuration.
Off = One or more of the following conditions exist:
• The expansion unit is powered off.
• The system cannot detect the expansion unit.
4
High Availability LED
Green
Orange
Green = Active
Orange = The expansion controller has taken over from
the other expansion controller.
Off = One or more of the following conditions exist:
• The expansion controller has failed over to the
other controller.
• The expansion controller is powered off.
5
Onboard SAS Port
LED
Green
Red
Off = No link
Green = Network link
Flashing = Network activity
Red = Error/damage
6
Power On Button
The power on button of the expansion controller. To
power off the expansion controller, press and hold the
button for 5 seconds.*
7
Reset Button
The expansion controller reset button
* QES does not provide the power on and off function for the expansion units.
Onboard mini-SAS ports
Two onboard mini Serial Attached SCSI (SAS) ports provide direct attachment to the base ES NAS
enclosure with 6Gb/s data transmission (or 12Gb/s depending on the expansion enclosure model)
.
Disk drives and Disk Enclosures
The ES NAS system and the expansion units
The system can accommodate superfast solid-state drives, and traditional spinning disk drives
such as SAS and NL-SAS drives. However, SSDs are the best choice for I/O intensive
workload and they can be used for cache acceleration in QES. Cache configurations are available
ranging from 1 drives up to 16 drives (full-SSD drive set) of the base ES NAS.
