Juniper Networks J-Series manual Partitions the boot medium

J-series™ Services Router Administration Guide

Table 97: Snapshot Summary (continued)

Field	Function
As Primary Media	On an external compact flash or USB storage
	device only, creates a snapshot for use as the
	primary boot medium.
	Use this feature to replace the medium in the
	internal compact flash slot or to replicate it for
	use in another Services Router. This process also
	partitions the boot medium.
	NOTE: After the boot device is created as an
	internal compact flash, it can operate only in an
	internal compact flash slot.
Data Size	Specifies the size of the data partition, in
	kilobytes.
	The data partition is mounted on /data. This
	space is not used by the router, and can be used
	for extra storage.
	This selection also partitions the boot medium.
Swap Size	Specifies the size of the swap partition, in
	kilobytes.
	The swap partition is used for swap files and
	software failure memory snapshots. Software
	failure memory snapshots are saved to the boot
	medium only if it is specified as the dump
	device.
	For information about the setting the dump
	device, see “Configuring a Boot Device to
	Receive Software Failure Memory
	Snapshots” on page 190.
	This selection also partitions the boot medium.
Config Size	Specifies the size of the config partition, in
	kilobytes.
	The config partition is mounted on /config. The
	configuration files are stored in this partition.
	This selection also partitions the boot medium.
Root Size	Specifies the size of the root partition, in
	kilobytes.
	The root partition is mounted on / and does not
	include configuration files.
	This selection also partitions the boot medium.

Your Action

To create a boot medium to use in the internal compact flash only, select the check box.

Type a numeric value, in kilobytes. The default value is 0 KB.

Type a numeric value, in kilobytes. The default value is one-third of the physical memory on a boot medium larger than 128,000 KB, or 0 KB on a smaller boot device.

Type a numeric value, in kilobytes. The default value is 10 percent of physical memory on the boot medium.

Type a numeric value, in kilobytes. The default value is the boot device's physical memory minus the config, data, and swap partitions.

188■ Configuring Boot Devices