HP StorageWorks 2/128 HP StorageWorks SAN Director 2/128 Installation Guide, V - Page 135
Replacing a Power Supply and Filler Panel, Replacing a Power Supply
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Installing SAN Director 2/128 FRUs Replacing a Power Supply and Filler Panel Use this procedure to remove and replace a power supply. The SAN Director 2/128 can continue operating during the replacement if at least one power supply continues operating. A minimum of two power supplies are recommended. Note: You do not need to notify the SAN Director 2/128 of a hot-swap request for a power supply. The power supply bays are isolated; power supply filler panels are not required to ensure correct air flow. The left power connector provides power to the power supplies in slots #1 and #3, and the right power connector provides power to the power supplies in slots #2 and #4. The power connectors and the power supply slots are color-coded to identify which power connectors provide power to which power supply slots. See Figure 1 for power supply location. Caution: To protect against AC failure, a minimum of one power supply in slot #1 or slot #3 and one in slot #2 or #4 is recommended. If only two power supplies are installed and they are both installed in slots corresponding to the same power cable, unplugging a single power cable will power down the entire chassis. If adequate power is abruptly lost such as through removal of a power supply, the entire switch is powered down; the power off order designated by the powerOffListSet command is not followed. Disassembling any part of the power supply voids the part warranty and regulatory certifications. There are no user-serviceable parts inside the power supply. Replacing a Power Supply Use these step to replace a power supply. No tools are required. 1. Determine whether power adequate to keep the chassis operating will be available throughout the replacement. If adequate power will not be consistently available, shut down the SAN Director 2/128 gracefully, as follows: a. Open a telnet session to the active CP card and log in to the switch as admin. SAN Director 2/128 Installation Guide 135