Hardware Requirements for JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers

• Power and Heat Dissipation Requirements for J Series PIMs
• Supported Third-Party Hardware
• J Series CompactFlash and Memory Requirements

Power and Heat Dissipation Requirements for J Series PIMs

On J-series Services Routers, the system monitors the PIMs and verifies that the PIMs fall within the power and heat dissipation capacity of the chassis. If power management is enabled and the capacity is exceeded, the system prevents one or more of the PIMs from becoming active.

Caution: Disabling the power management can result in hardware damage if you overload the chassis capacities.

You can also use CLI commands to choose which PIMs are disabled. For details about calculating the power and heat dissipation capacity of each PIM and for troubleshooting procedures, see the J Series Services Routers Hardware Guide.

Supported Third-Party Hardware

The following third-party hardware is supported for use with J-series Services Routers running Junos OS.

• USB Modem

  We recommend using a U.S. Robotics USB 56K V.92 Modem, model number USR 5637.

• Storage Devices

  The USB slots on J-series Services Routers accept a USB storage device or USB storage device adapter with a CompactFlash card installed, as defined in the CompactFlash Specification published by the CompactFlash Association. When the USB device is installed and configured, it automatically acts as a secondary boot device if the primary CompactFlash card fails on startup. Depending on the size of the USB storage device, you can also configure it to receive any core files generated during a router failure. The USB device must have a storage capacity of at least 256 MB.

  Table 7 lists the USB and CompactFlash card devices supported for use with the J-series Services Routers.

  Table 7: Supported Storage Devices on the J-series Services Routers

  Manufacturer	Storage Capacity	Third-Party Part Number
  SanDisk—Cruzer Mini 2.0	256 MB	SDCZ2-256-A10
  SanDisk	512 MB	SDCZ3-512-A10
  SanDisk	1024 MB	SDCZ7-1024-A10
  Kingston	512 MB	DTI/512KR
  Kingston	1024 MB	DTI/1GBKR
  SanDisk—ImageMate USB 2.0 Reader/Writer for CompactFlash Type I and II	N/A	SDDR-91-A15
  SanDisk CompactFlash	512 MB	SDCFB-512-455
  SanDisk CompactFlash	1 GB	SDCFB-1000.A10

J Series CompactFlash and Memory Requirements

Table 8 lists the CompactFlash card and DRAM requirements for J Series Services Routers.

Related Documentation

• Features in JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers
• Features Not Supported for Chassis Clusters in JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers
• Changes in Default Behavior and Syntax in JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers
• Issues in JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers
• Upgrade and Downgrade Instructions for JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers
• Errata in Documentation for JUNOS Software with Enhanced Services Release 9.3 for J-series Services Routers