Upgrading an SRX5800 Services Gateway from Standard-Capacity to High-Capacity AC Power Supplies

You can replace the standard-capacity AC power supplies in the SRX5800 Services Gateway with either two or four high-capacity AC power supplies. Two high-capacity AC power supplies provide adequate power for a fully loaded chassis; installing four high-capacity AC power supplies provides redundancy in case one power supply in either zone fails. You do not need to power off the device to upgrade to high-capacity AC power supplies.

Note: The services gateway cannot be powered from standard-capacity and high-capacity AC power supplies simultaneously. The one exception is during the process of replacing standard-capacity AC power supplies with high-capacity AC power supplies, when it is permissible to have both types installed briefly.

To upgrade an operational SRX5800 Services Gateway from standard-capacity power supplies to high-capacity power supplies:

1. Remove the power supply, if any, in slot PEM0, as described in Removing an SRX5800 Services Gateway AC Power Supply.
2. Install a high-capacity AC power supply in slot PEM0, as described in Installing an SRX5800 Services Gateway AC Power Supply.
3. Repeat steps 1 through 2 for slot PEM1.
4. Remove the power supply, if any, in slot PEM2, as described in Removing an SRX5800 Services Gateway AC Power Supply.
5. If you are installing four high-capacity power supplies, install a high-capacity AC power supply in slot PEM2, as described in Installing an SRX5800 Services Gateway AC Power Supply. If you are installing only two high-capacity power supplies, install a blank slot cover over the PEM2 slot.
6. Repeat steps 4 through 5 for slot PEM3.