Powering On the Storage System

Power-On Sequence

Regarding the system power-on sequence, two basic rules must be followed:

• If the system includes disk bays, they must be powered on before the system bays are powered on.
• System bays must be powered on in ascending order from system bay 0 to system bay n.

• Before powering on a 4 U controller enclosure, ensure that the controller enclosure has been connected to the configuration disk enclosure (the enclosure with coffer disk identifiers) and coffer disks have been installed in slots 0 to 3 of the configuration disk enclosure.
• Ensure that the configuration disk enclosure is a new device that has never been connected to any controller enclosure.
• The power-on of the storage system takes 15 to 30 minutes.
• Devices must be grounded before the storage system is powered on. Otherwise, devices may be damaged.
• To avoid electric shocks, do not wear an ESD wrist strap when powering on the storage device.

The overall system power is controlled by power switches on power distribution units (PDUs). Each bay is equipped with PDUs that reside at the left and right sides in the rear of the bay. Your PDUs can be either European standard or North American standard. Choose the correct power-on sequence according to the type of PDUs configured.

Power-On Sequence for Systems Configured with European Standard PDUs

For a system configured with European standard PDUs, the correct power-on sequence is as follows:

1. Turn on PDU switches on disk bays, and then system bay 0 and system bay 1 in sequence.
   • For European standard PDU switches (single-phase, 220 V, 32 A), turn on the switches in a sequence of B1 > B2.
   • For European standard PDU switches (three-phase, 380 V, 32 A), turn on the switches in a sequence of A1 > A2 > B1 > B2 > C1 > C2.

   For details about switches of European standard PDUs, see Power Supply Components of System Bays and Disk Bays.

2. Press the power button of all controllers, as shown in Figure 4-103.

   In a scenario with multiple controllers, all the controller enclosures must be powered on within three minutes. If the controller enclosures fail to power on within the specified period, the storage system fails to power on. In this case, contact Huawei technical support engineers.

   To power on the storage system, press the power button. If the power indicator of the controller enclosure is blinking green, the storage system is being powered on. Do not hold down the power button for more than five seconds; otherwise, the storage system will be powered off.

   Figure 4-103 Power button on a controller
   

Power-On Sequence for Systems Configured with North American Standard PDUs

For a system configured with North American standard PDUs, the correct power-on sequence is as follows:

1. Turn on PDU switches on system bay 0 and then system bay 1 in sequence.

   For North American standard PDU switches, turn on the switches in a sequence of B1 > B2 > B3.

   For details about North American standard PDU switches, see Power Supply Components of System Bays and Disk Bays.

2. Press the power button of all controllers, as shown in Figure 4-104.

   In a scenario with multiple controllers, all the controller enclosures must be powered on within three minutes. If the controller enclosures fail to power on within the specified period, the storage system fails to power on. In this case, contact Huawei technical support engineers.

   To power on the storage system, press the power button. If the power indicator of the controller enclosure is blinking green, the storage system is being powered on. Do not hold down the power button for more than five seconds; otherwise, the storage system will be powered off.

   Figure 4-104 Power button on a controller
   

Power-On Sequence for Systems Configured with High Voltage DC PDUs

For a system configured with high voltage direct current (HVDC) PDUs, the correct power-on sequence is as follows:

1. Turn on PDU switches on disk bays, and then system bay 0 and system bay 1 in sequence.

   For HVDC PDU switches, turn on the switches in a sequence of B1 > B2.

   For details about HVDC PDU switches, see Power Supply Components of System Bays and Disk Bays.

2. Press the power button on each controller enclosure, as shown in Figure 4-105.

   In a scenario with multiple controllers, all the controller enclosures must be powered on within three minutes. If the controller enclosures fail to power on within the specified period, the storage system fails to power on. In this case, contact Huawei technical support engineers.

   To power on the storage system, press the power button. If the power indicator of the controller enclosure is blinking green, the storage system is being powered on. Do not hold down the power button for more than five seconds; otherwise, the storage system will be powered off.

   Figure 4-105 Power button on a controller enclosure
   

Power-On Check

After the storage system is powered on, the power indicators on the controller enclosures and disk enclosures change to steady green.

The following figures and indicators are used only to check whether the system is powered on properly. For details about indicators, see sections about indicators on components in the Product Description.

Figure 4-106, Figure 4-107, Figure 4-108, Figure 4-109, Figure 4-110, and Figure 4-111 show the indicator status after the system is powered on.

Figure 4-106 Indicators on a smart SAS disk enclosure (front view)

Figure 4-107 Indicators on a smart SAS disk enclosure (front view)

Figure 4-108 Indicators on a smart NVMe disk enclosure (front view)

Figure 4-109 Indicators on a 2 U SAS disk enclosure (front view)

Figure 4-110 Indicators on a 4 U SAS disk enclosure (front view)

Figure 4-111 Indicators on a 4 U controller enclosure (front view)