5a
Switching on external power supplies
Turn on external power supplies in the following sequence: disk enclosures
→ controller enclosures → NAS units (if
configured)
→ switches (for a SAN) → application servers.
Checking cable connections
4a
Checking device installation
4b
Check Item
Normal
Abnormal
Controller enclosure
The device sits stably on the guide rails without
displacement.
Screws are properly secured.
The device slants or cannot be detected.
Screws are loose or have fallen off.
Disk enclosure
(Optional) NAS unit
Check Item
Normal
Abnormal
Ground cable, optical fiber cable,
mini SAS HD electrical
cable/optical cable, network
cable, and serial cable
The cable is fully inserted and secured.
The cable is loose or disconnected.
AC power cable
The AC power cables for each controller
enclosure or disk enclosure are connected to two
separate power supplies for redundancy.
The AC power cables are secured with plastic
buckles.
The AC power cables for each controller
enclosure or disk enclosure are
connected to the same power supply.
The AC power cables are not secured
with plastic buckles.
DC power cable
The OT terminal of the black cable connects to the
RTN (+) terminal and the OT terminal of the blue
cable connects to the NEG (-) terminal.
The OT terminal of the blue cable connects to
the RTN (+) terminal and the OT terminal of
the black cable connects to the NEG (-)
terminal.
4 Checking Hardware Installation
5 Powering On the Storage System
To avoid electric shock, do not wear an ESD wrist strap when the storage system is powering on.
Do not change cable connections between enclosures after power-on. Otherwise the storage system may malfunction.
If the expansion cables are incorrectly connected, power off the device, reconnect the expansion cable, and power on
the device.
Follow the correct power-on sequence of the storage system: Turn on the external power supplies for each device (disk
enclosures first, then controller enclosures and NAS units).
→ Press the power buttons on the controller enclosures. → Power
on the switches.
→ (If configured) Press the power buttons on the NAS units. → Power on the application servers.
Follow the correct power-off sequence of the storage system: Stop host services.
→ (If configured) Press and hold down the
power buttons (typically for 5 seconds) on the NAS units until the units are completely powered off.
→ Press and hold down the
power buttons (typically for 5 seconds) on the controller enclosures until the system is completely powered off.
→ Disconnect
the controller enclosures, disk enclosures and NAS units from their power supplies.
The power-on of the storage system takes 15 to 30 minutes. When the power indicator on the controller enclosure no longer
blinks, the power-on is completed.
16
NOTICE
Scenario 1
Turning on the switches of the power
distribution box
Scenario 2
Turning on the switch of the PDU
Front
Rear
Front
Rear
