Powering off the Storage System

Prerequisites

No service is running on the storage device.

Context

• Typically, a storage system is powered off in the following sequence: Stop host services, power off the controller enclosure, and then disconnect the external power supply.
• The controller enclosure can be powered off in either of the following ways: Press and hold down the power button on the controller enclosure for 5 seconds, or power off the controller enclosure on its DeviceManager.
• This document describes how to power off the controller enclosure on its DeviceManager.

Procedure

1. Log in to DeviceManager of the controller enclosure.
2. Choose > Power Off Device.
3. Confirm the information in the displayed Danger dialog box, enter the password of the currently logged-in user, and then select I have read and understand the consequences associated with performing this operation.

   If you enter the wrong password more than three times within 5 minutes, the current user will be logged out and exit DeviceManager.

4. Click OK.

   The Success dialog box is displayed, indicating that the operation is successful.

5. Click OK. You have powered off the storage device.

Prerequisites

No service is running on the storage system.

Context

• Typically, a storage system is powered off in the following sequence: Stop host services, power off the controller enclosure, and then disconnect the external power supply.
• The operation of turning off PDU switches varies based on types of PDUs configured.
  • North American standard PDUs:

    Insert a flat-head screwdriver or a clip into the hole located above the word OFF on the switch, and push forward gently until the upper part of the switch pops up.

  • European standard PDUs and high voltage direct current (HVDC) PDUs:

    Turn the switch downward.

Procedure

1. Power off the storage device.

   You can power off the storage system by holding down the engine power button for five seconds or performing power-off operations on DeviceManager. This section uses the operations on DeviceManager as an example.

   1. Log in to DeviceManager.
   2. Choose > Power Off Device.
   3. Confirm the information in the displayed Danger dialog box, enter the password of the currently logged-in user, and then select I have read and understand the consequences associated with performing this operation.

      If you enter the wrong password three times in succession within 5 minutes, the current user will be logged out and exit DeviceManager.

   4. Click OK.

      The Success dialog box is displayed, indicating that the operation succeeded.

   5. Click OK. You have powered off the storage device.

2. Turn off the PDU switches in every bay in the right sequence.

   The sequence to turn off the PDU switches is as follows:

   Turn off the PDU switch on all system bays from system bay 0 to system bay n in sequence.

   • You can turn off the storage system that is configured with European standard PDU switches as follows:
     Turn off PDU switches of the system bays from system bay 0 to system bay n in sequence.

     • For European standard PDU switches (single-phase, 220 V, 32 A), turn off the switches in a sequence of B2 > B1.
     • For European standard PDU switches (three-phase, 380 V, 32 A), turn off the switches in a sequence of C2 > C1 > B2 > B1 > A2 > A1.

     Figure 5-12 and Figure 5-13 show switches on a European standard PDU switches.

     Figure 5-12 Switches on a European standard PDU (single phase, 220 V, 32 A)
     
     Figure 5-13 Switches on a European standard PDU (three-phase, 380 V, 32 A)
     
   • You can turn off the storage system that is configured with HVDC PDU switches as follows:

     Turn off PDU switches of the system bays from system bay 0 to system bay n in sequence.

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

     Figure 5-14 shows the HVDC PDU switch.

     Figure 5-14 Switches on an HVDC PDU (240 V, 32 A)