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

Replace the SSD Drives 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 SSD1 and SSD2. Figure 1 shows the arrangement of storage drive slots on a RE-S-X6-64G Routing Engine.

Note:

Ensure that a routing engine does not contain a mix of 50 GB and 200 GB SSDs. Ensure that the SSDs on a routing engine are from the same vendor and not from different vendors. Both SSDs in the routing engine must be the same type and must contain the same disk capacity. So upgrade the two 50 GB SSDs to 200 GB SSDs at once, because mixed-mode operation is not supported.

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

  1. Replacing the SSD drives in the Routing Engine

  2. Copy the Junos OS to the newly replaced SSD

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

Extractor clips

  6
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ONLINE/OFFLINE Button

  2
—

Auxiliary port (AUX)

  7
—

SSD LEDs—DISK1 and DISK2

  3
—

Console port (Con)

  8
—

Ports—USB1 and USB2

  4
—

Management port (MGMT)

  9
—

RESET Button

  5
—

LEDs—ONLINE, OK/FAIL, and MASTER

10
—

SSD card slot cover

Replacing Both the SSDs in the Routing Engine:

Note:

Ensure that a routing engine does not contain a mix of 50 GB and 200 GB SSDs. Ensure that the SSDs on a routing engine are from the same vendor and not from different vendors. Both SSDs in the routing engine must be the same type and must contain the same disk capacity. So upgrade the two 50 GB SSDs to 200 GB SSDs at once, because mixed-mode operation is not supported.
Note:

Ensure that you keep a bootable USB disk ready if installing vmhost and Junos OS using an USB disk. To prepare a bootable USB disk, see Creating an Emergency Boot Device for Routing Engines with VM Host Support.
  1. Configure the set chassis redundancy gracefulswitchover, set system commit synchronize, set routing-options nonstop-routing commands to enable graceful switchover (GRES), commit synchronize (required for nonstop routing) and nonstop routing (NSR).
  2. Bring the backup Routing Engine (RE1) offline by pressing the ONLINE/OFFLINE button.
    Note:

    To disable and deactivate, press and hold the ONLINE/OFFLINE button until the LED start blinking and wait until all Routing Engine LEDs are Off.

    Note:

    If you have only one Routing Engine installed, you can bring it offline and follow the steps below. Traffic is interrupted when the Routing Engine is offline.
  3. From the backup Routing Engine (RE1), remove the SSDs from slot SSD1 and slot SSD2.
    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. See Figure 2.
    Figure 2: Removing an SSD in the Routing Engine RE-S-X6-64G Removing an SSD in the Routing Engine RE-S-X6-64G
  4. Insert the new SSDs in slot SSD1 and slot SSD2. See Figure 3.
    Figure 3: Installing an SSD in the Routing Engine RE-S-X6-64G Installing an SSD in the Routing Engine RE-S-X6-64G
      1
    —

    Carrier

      2
    —

    SSD card
    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.
  5. Use the USB disk to install Junos OS (see Copy the Junos OS to the Newly Replaced SSD Using a USB disk (Minimum 8-GB)).

Replacing Disk2 (SSD2) Only in the Routing Engine:

Note:

Ensure that a routing engine does not contain a mix of 50 GB and 200 GB SSDs. Ensure that the SSDs on a routing engine are from the same vendor and not from different vendors. Both SSDs in the routing engine must be the same type and must contain the same disk capacity. So upgrade the two 50 GB SSDs to 200 GB SSDs at once, because mixed-mode operation is not supported.

  1. Make sure that the router is booted up and running from an image from disk1 (execute the request vmhost reboot disk1 command to boot from disk1).

  2. Remove disk2 and replace with a new disk (refer step 3 to step 4).

  3. Reboot the Routing Engine by executing the request vmhost reboot command.

  4. The router boots from disk1 when disk2 is replaced. To be able to boot from disk2, execute the request vmhost snapshot partition command.

Replacing Disk1 (SSD1) Only:

Note:

Ensure that a routing engine does not contain a mix of 50 GB and 200 GB SSDs. Ensure that the SSDs on a routing engine are from the same vendor and not from different vendors. Both SSDs in the routing engine must be the same type and must contain the same disk capacity. So upgrade the two 50 GB SSDs to 200 GB SSDs at once, because mixed-mode operation is not supported.

  1. Make sure that the router is booted up and running from an image from disk2 (execute the request vmhost reboot disk2 command to boot from disk2).

  2. Remove disk1 and replace with a new disk (refer step 3 to step 4).

  3. Reboot the Routing Engine by executing the request vmhost reboot command.

  4. The router boots from disk2 when disk1 is replaced. To be able to boot from disk1, execute the request vmhost snapshot recovery partition command.

  5. Boot from disk1 by executing the request vmhost reboot disk1 command.

See Also

Copy the Junos OS to the Newly Replaced SSD Using a USB disk (Minimum 8-GB)

Once you have replaced the SSD, you can now copy the VM Host and Junos OS to a newly replaced SSD using a USB disk:
Note:

In addition to the USB device, you can also install the VM Host and Junos OS using a Preboot Execution Environment (PXE) boot server. For more information, see Installing, Upgrading, Backing Up, and Recovery of VM Host.

  1. Insert the USB disk (with bootable image) in the USB slot on the Routing Engine.
    Note:

    See Creating an Emergency Boot Device for Routing Engines with VM Host Support for creating the bootable USB.
  2. Log in to the backup Routing Engine (RE1) through the console session.
  3. Bring the Routing Engine online by pressing the ONLINE/OFFLINE button.
  4. After the Routing Engine starts booting 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. 
  5. After the installation completes, press y when prompted to confirm Reboot now? [y/N]? to reboot from the SSD disk.
  6. Once the backup Routing Engine boots:

    1. Verify the status of backup Routing Engine (RE1) is online by entering the show chassis routing-engine CLI.

    2. On the Routing Engine (RE1), verify the new SSDs capacity by entering the show vmhost hardware CLI. The output is similar to the following.

    3. On the backup Routing Engine (RE1), verify that the vmhost versions are same as Routing Engine (RE0) by entering the show vmhost version CLI. The output is similar to the following.

    4. From the primary Routing Engine (RE0), perform commit synchronize command.

    5. If the Network Services Mode: Enhanced-IP configuration was previously applied, then a warning message indicating the changes in the network services mode displays. Perform a reboot on the backup Routing Engine in order to enable the Network Services Mode to apply Enhanced IP.

  7. Make sure both the Routing Engines are in SYNC and ready for the switchover:

    1. On the backup Routing Engine (RE1), verify the GRES readiness by entering the show system switchover CLI. Output is similar to the following:

    2. On the primary Routing Engine (RE0), check the switchover state by entering the following command:

    3. On the primary Routing Engine (RE0), check the replication state if nonstop-routing is enabled by entering the show task replication CLI. The output is similar to the following:

  8. Switch the current primary Routing Engine (RE0) to RE1 by executing the request chassis routing-engine master switch command on the primary Routing Engine.
  9. Once the Routing Engine (RE1) becomes the primary Routing Engine and is carrying traffic, repeat the steps in Replace the SSD Drives on an RE-S-X6-64G and Copy the Junos OS to the Newly Replaced SSD Using a USB disk (Minimum 8-GB) on the new backup Routing Engine (RE0).