Hardware Requirements for JUNOS Software Release 9.5 for J-series Services Routers
- Power and Heat Dissipation Requirements for J Series PIMs
- Supported Third-Party Hardware for J Series Services Routers
- 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 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 troubleshooting procedures, see the J-series Services Routers Hardware Guide.
Supported Third-Party Hardware for J Series Services Routers
The following third-party hardware is supported for use with J-series Services Routers running JUNOS software.
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 13 lists the USB and CompactFlash card devices supported for use with the J-series Services Routers.
Table 13: Supported Storage Devices on the J-series Services Routers
Manufacturer | Storage Capacity | Third-Party Part Number |
|---|---|---|
SanDiskâCruzer 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 |
SanDiskâImageMate 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 14 lists the CompactFlash card and DRAM requirements for J Series Services Routers.
Table 14: J Series CompactFlash Card and DRAM Requirements
Model |
Minimum CompactFlash Card Required |
Minimum DRAM Required |
Maximum DRAM Supported |
|---|---|---|---|
|
J2320 |
512 MB |
512 MB |
1 GB |
|
J2350 |
512 MB |
512 MB |
1 GB |
|
J4350 |
512 MB |
512 MB |
2 GB |
|
J6350 |
512 MB |
1 GB |
2 GB |
Related Topics
- New Features in JUNOS Software Release 9.5 for J-series Services Routers
- Known Limitations in JUNOS Software Release 9.5 for J-series Services Routers
- Changes in Default Behavior and Syntax
- Issues in JUNOS Software Release 9.5 for J-series Services Routers
- Upgrade and Downgrade Instructions for JUNOS Software Release 9.5 for J-series Services Routers
- Errata in Documentation for JUNOS Software Release 9.5 for J-series Services Routers
