Related Documentation
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:
- Remove the power supply, if any, in slot PEM0, as described in Removing an SRX5800 Services Gateway AC Power Supply.
- Install a high-capacity AC power supply in slot PEM0, as described in Installing an SRX5800 Services Gateway AC Power Supply.
- Repeat steps 1 through 2 for slot PEM1.
- Remove the power supply, if any, in slot PEM2, as described in Removing an SRX5800 Services Gateway AC Power Supply.
- 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.
- Repeat steps 4 through 5 for slot PEM3.
