Juniper SRX110 H2 User Manual

Dual-Root Partitioning Scheme
Dual-root partitions allow services gateways to remain functional if the file system
becomes corrupted, and they facilitate easy recovery of the corrupted file system.
The dual-root partitioning scheme keeps the primary and backup Junos OS images in
two independently bootable root partitions. If the primary root partition becomes
corrupted, the system can boot from the backup Junos OS image in the other root partition
and remain fully functional.
When the SRX110 Services Gateway powers up, it tries to boot Junos OS from the default
storage medium. If the device fails to boot from the default storage medium, it tries to
boot from the alternate storage medium. With the dual-root partitioning scheme, the
services gateway first tries to boot Junos OS from the primary root partition and then
from the backup root partition on the default storage medium. If both primary and backup
root partitions of a storage medium fail to boot, then the device tries to boot from the
next available type of storage media. The services gateway remains fully functional even
if it boots Junos OS from the backup root partition of the storage medium.
Related
Documentation
• SRX110 Services Gateway Front Panel and Back Panel Views with 3G and Integrated
VDSL2 on page 15
• SRX110 Services Gateway LEDs on page 19
• SRX110 Services Gateway Power Supply on page 9
• SRX110 Services Gateway Specifications on page 30
23Copyright © 2015, Juniper Networks, Inc.
Chapter 3: Chassis Description

Juniper SRX110 H2 Specifications

General

Form Factor	Desktop
VPN Throughput	65 Mbps
Maximum Concurrent Sessions	16, 000
Memory	1 GB DRAM
Flash Memory	256 MB
Power Supply	External AC adapter
Humidity	10% to 90% non-condensing
Weight	2.5 lbs
Operating Temperature	32°F to 104°F (0°C to 40°C)
Ports	8 x 10/100/1000BASE-T