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Replacing a Solid-State Drive in an SRX5K-RE-1800X4 Routing Engine

Switching from the Master Routing Engine to a Backup Routing Engine

On services gateways with two Routing Engines, one Routing Engine is the master and the other is backup. By default, the Routing Engine on the host subsystem is the master.

If you are removing Solid-State Drive (SSD) on the master Routing Engine, you can switch mastership so that routing is not disturbed.

To switch Routing Engine mastership:

Enter CLI operational mode, and issue the following command to copy the currently running and active file system partitions on the SSD, to the standby partitions on the internal compact flash card.
user@host> request system snapshot
Wait until a message appears on the console confirming that the procedure is complete.
Determine whether the host subsystem is functioning as the master or as the backup, using one of these methods:
- Check the MASTER LED on the Control Board. If the blue MASTER LED is lit, the host subsystem is functioning as the master.
- Enter the following CLI command. The master Routing Engine is designated Master in the Current state field:
  user@host> show chassis routing-engine
```
Routing Engine status:   
  Slot 0:
    Current state                 Master
...
 
```
If the host subsystem is functioning as the master, switch it to be the backup by using the request chassis routing-engine master switch command.
From the master Routing Engine, issue the request system power-off other-routing-engine command to power off the backup Routing Engine.
Wait until a message appears on the console confirming that the procedure is complete.
Verify that the ONLINE LEDs on the backup Routing Engine faceplate are off.

Removing a Solid-State Drive in an SRX5K-RE-1800X4 Routing Engine

The SSD is located in the slot labeled SATA SSD1 on the Routing Engine.

To remove an SSD from a Routing Engine:

Place an electrostatic bag or antistatic mat on a flat, stable surface.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
Unfasten the thumbscrew that secures the access door in front of the storage drive slots, and open the door.
Slide the lock on the ejector to the unlocked position.
The SSD pops partially out of the slot. Grasp the SSD and carefully slide it completely out of the slot.
Place the SSD on the antistatic mat.

Installing a Solid-State Drive in an SRX5K-RE-1800X4 Routing Engine

To install an SSD in a Routing Engine:

Align the sides of the SSD with the guides in the SATA SSD1 slot on the Routing Engine.
Slide the SSD into the slot until you feel resistance, ensuring that it is correctly aligned.
Slide the lock on the ejector to locked position.
Close the access door and tighten the thumbscrew to secure the door.
From the master Routing Engine, issue the request system power-on other-routing-engine command to power on the Routing Engine.

Copying Junos OS to the Solid-State Drive in an SRX5K-RE-1800X4 Routing Engine

After installing a SSD for the first time, you must back up the current installation that is on the CompactFlash card to SSD so that you can return to the current software installation.

Start the CLI, and enter the command request system snapshot to copy the currently running and active file system partitions on the CompactFlash card to the standby partitions on the SSD.
Wait until a message appears on the console confirming that the snapshot procedure is complete.