Configuring Boot Devices for SRX Series Services Gateways

You can configure a boot device to replace the primary boot device on your SRX Series device, or to act as a backup boot device. The backup device must have a storage capacity of at least 1 GB. Use either the J-Web interface or the CLI to take a snapshot of the configuration currently running on the device, or of the original factory configuration and a rescue configuration, and save it to an alternate medium.

Note: For media redundancy, we recommend that you keep a secondary storage medium attached to the SRX Series device and updated at all times.

If the primary storage medium becomes corrupted and no backup medium is in place, you can recover the primary internal media from the TFTP installation. See Installing Junos OS on the SRX Series Services Gateways from the TFTP Server

You can also configure a boot device to store snapshots of software failures, for use in troubleshooting.

This topic includes the following sections:

• Configuring a Boot Device for Backup on SRX Series Services Gateways (J-Web Procedure)
• Configuring a Boot Device for Backup on SRX Series Services Gateways (CLI Procedure)

Configuring a Boot Device for Backup on SRX Series Services Gateways (J-Web Procedure)

You can use the J-Web interface to create a boot device on an alternate medium, to replace the primary boot device or to serve as a backup.

Figure 12 shows the Snapshot page.

To create a boot device:

1. In the J-Web interface, select Maintain>Snapshot.
2. On the Snapshot page, enter information into the fields described in Table 127.

   Table 127: Snapshot Summary

   Field	Function	Your Action
   Target Media	Specifies the boot device to copy the snapshot to. Note: You cannot copy software to the active boot device.	In the list, select a boot device that is not the active boot device: internal—Copies software to the internal media. usb—Copies software to the device connected to the USB port.
   Factory	Copies only default files that were loaded on the internal media when it was shipped from the factory, plus the rescue configuration if one has been set. Note: After a boot device is created with the default factory configuration, it can operate only in an internal media slot.	To copy only the default factory configuration plus a rescue configuration if one exists, select the check box.
   Partition	Partitions the medium. This process is usually necessary for boot devices that do not already have software installed on them.	To partition the medium that you are copying the snapshot to, select the check box.

3. Click Snapshot.
4. Click OK.

Configuring a Boot Device for Backup on SRX Series Services Gateways (CLI Procedure)

Use the request system snapshot CLI command to create a boot device on an alternate medium, to replace the primary boot device or to serve as a backup. Enter the command with the following syntax:

1. Enter request system snapshot command.
2. Select the options listed in Table 128.