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Replacing an SSD Drive on an RE-S-X6-64G

Each RE-S-X6-64G Routing Engine supports two solid-state drives (SSD) specified by Juniper Networks. The RE-S-X6-64G ships with two SSDs installed in the slot labeled DISK1 and DISK2. Figure 1 shows the arrangement of storage drive slots on a RE-S-X6-64G Routing Engine.

Replacing an SSD drive in a RE-S-X6-64G Routing Engine consists of the following two stages:

  1. Replacing the SSD Drive in the Routing Engine.

  2. Copying vmhost and Junos OS to the replaced SSD.

Figure 1: RE-S-X6-64G Storage Drive SlotsRE-S-X6-64G Storage Drive Slots

The following drive has been verified to work in the RE-S-X6-64G Routing Engine:

  • 64GB slim SATA SSD

Replacing the SSDs:

  1. To replace an SSD in the slot labeled Disk2:

    • Make sure that there is no VMHost %d Boot from alternate disk alarm in the output:

      user@host>show chassis alarm

    To replace an SSD in the slot labeled Disk1:

    1. Make sure that the router is booted up and running from an image from disk1.

      Back up the currently running vmhost and Junos OS on disk1 to ensure that both disk1 and disk2 have the same version of vmhost and Junos OS:

      user@host> request vmhost snapshot [partition]

      Note:

      Partitioning the target media is optional.

    2. Reboot the router from disk2:

      user@host> request vmhost reboot disk2

    3. Check for the presence of the VMHost %d Boot from alternate disk alarm in the output:

      user@host>show chassis alarm

  2. Offline the Routing Engine by pressing the ONLINE/OFFLINE button.
  3. Remove the SSD.
    1. Attach an ESD grounding strap to your bare wrist, and connect the strap to an ESD point on the appliance.

      For more information about ESD, see Preventing Electrostatic Discharge Damage in the hardware guide for your router.

    2. Unfasten the thumbscrew that secures the access door in front of the storage drive slots, and open the door.
    3. Slide the lock on the ejector to the unlocked position.
    4. Carefully slide the drive out of the slot.
    Figure 2: Removing an SSD in the Routing Engine RE-S-X6-64GRemoving an SSD in the Routing Engine RE-S-X6-64G
  4. Reinstall an SSD:
    1. Carefully align the sides of the drive with the guides in the slot.
    2. Slide the drive into the slot until you feel resistance, carefully ensuring that it is correctly aligned.
    3. Close the access door and tighten the thumbscrew to secure the door.

  1. Copy Junos OS to the newly replaced SSD:

    If both the SSDs are replaced together:

    1. Install using an USB disk:

      1. Insert the USB disk in the USB slot on the Routing Engine.

      2. After the Routing Engine boots from the USB, press y when you are prompted to confirm Install vmhost and Junos software on Primary and Secondary disk [y/N? on the console.

      3. After the installation is completed, press y when prompted to confirm Reboot now? [y/N]? to reboot from the SSD disk.

      Note:

      To prepare a bootable USB disk, see Creating an Emergency Boot Device for Routing Engines with VM Host Support.

    2. Install vmhost using the PXEBoot method:

      1. Set up the PXEBoot server. See Copying VM Host Installation Package to the PXE Boot Server.

      2. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button

      3. During the boot, when you see the message Press Esc for boot options press Esc key to enter into the BIOS menu boot options.

        After the Esc key is pressed, Esc is pressed. Go to boot options. is displayed on the screen.

      4. Using Up or Down arrow keys, navigate to Boot Manager and press the Enter key.

      5. Using Up or Down arrow keys, navigate through the EFI boot devices listed and select EFI Network 0 for IPv4 to boot from the PXEboot server and press the Enter key.

      6. Booting `net boot console is displayed and PXEBoot continues.

        Note:

        The booting process may take several minutes.

      7. After the Routing Engine boots, press y when you are prompted to confirm Install vmhost and Junos software on Primary and Secondary disk [y/N? on the console.

      8. After the installation is completed, press y when prompted to confirm Reboot now? [y/N]? to reboot from the SSD disk.

    If only disk2 is replaced:

    1. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button.

    2. The router boots from disk1. To be able to boot from disk2:

      user@host> request vmhost snapshot partition

    If only disk1 is replaced:

    1. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button.

    2. The router boots from disk2 . To be able to boot from disk1:

      user@host> request vmhost snapshot partition

Figure 3: Installing an SSD in the Routing Engine RE-S-X6-64GInstalling an SSD in the Routing Engine RE-S-X6-64G
  1
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Carrier
  2
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SSD card

Copying vmhost and Junos OS from an USB disk when both the SSDs are replaced together:

Note:

To prepare a bootable USB disk, see Creating an Emergency Boot Device for RE-MX-X6, RE-MX-X8 and RE-PTX-X8 Routing Engines.

  1. Insert the USB disk in the USB slot on the Routing Engine.

  2. After the Routing Engine boots from the USB, press y when you are prompted to confirm Install vmhost and Junos software on Primary and Secondary disk [y/N]? on the console.

  3. After the installation is completed, press y when prompted to confirm Reboot now? [y/N]? to reboot from the SSD disk.

Copying vmhost and Junos OS to the SSDs from the PXEBoot server:

  1. Set up the PXEBoot server. See Copying VM Host Installation Package to the PXE Boot Server.

  2. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button.

  3. During the boot, when you see the message Press Esc for boot options press Esc key to enter into the BIOS menu boot options.

    After the Esc key is pressed, Esc is pressed. Go to boot options. is displayed on the screen.

  4. Using Up or Down arrow keys, navigate to Boot Manager and press the Enter key.

  5. Using Up or Down arrow keys, navigate through the EFI boot devices listed and select EFI Network 0 for IPv4 to boot from the PXEboot server and press the Enter key.

  6. Booting `net boot console is displayed and PXEBoot continues.

    Note:

    The booting process may take several minutes.

  7. After the Routing Engine boots, press y when you are prompted to confirm Install vmhost and Junos software on Primary and Secondary disk [y/N]? on the console.

  8. After the installation is completed, press y when prompted to confirm Reboot now? [y/N]? to reboot from the SSD disk.

Copying vmhost and Junos OS when only one disk is replaced:

  1. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button.

  2. The router boots from disk1 if disk2 is replaced. To be able to boot from disk2:

    user@host> request vmhost snapshot partition

    The router boots from disk2 if disk1 is replaced. To be able to boot from disk1:

    user@host> request vmhost snapshot recovery partition

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