Srx110 Services Gateway Boot Devices And Dual-Root Partitioning Scheme; Boot Devices; Dual-Root Partitioning Scheme - Juniper SRX110 Manual

SRX110 Services Gateway Hardware
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SRX110 Services Gateway Boot Devices and Dual-Root Partitioning Scheme

Boot Devices

Dual-Root Partitioning Scheme

Related
Documentation
16
NOTE: The LED marked as 2 in
release.
SRX110 Services Gateway Specifications on page 7
SRX110 Services Gateway Front Panel and Back Panel Views with 3G and Integrated
VDSL2 on page 9
SRX110 Services Gateway Boot Devices and Dual-Root Partitioning Scheme on page 16
This topic includes the following sections:
Boot Devices on page 16
Dual-Root Partitioning Scheme on page 16
The SRX110 Services Gateway can boot from two devices:
CompactFlash (default; always present)
USB storage key (alternate)
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.
SRX110 Services Gateway Front Panel and Back Panel Views with 3G and Integrated
VDSL2 on page 9
SRX110 Services Gateway LEDs on page 13
SRX110 Services Gateway Power Supply on page 17
Figure 7 on page 15 is not functional in this
Copyright © 2012, Juniper Networks, Inc.