Juniper QFabric QFX3000-G Hardware Documentation page 651

Installing an HDD Module in a QFX3100 Director Device
Copyright © 2018, Juniper Networks, Inc.
Troubleshooting HDD Module Failures in a RAID Volume on page 849
QFX3100 Director devices have two 2-terabyte (TB) hard disk drive (HDD) module slots
on the front panel. HDD modules are field-replaceable units (FRUs) and hot-swappable.
At least one HDD module should always be installed in a QFX3100 Director device and
the array volume should have the status of Optimal.
BEST PRACTICE:
not corrupted, isolate the QFX3100 Director device from the network before
replacing the HDD.
NOTE: When you install an HDD module in a QFX3100 Director device that
is powered on, the HDD module partitions are created and the file system is
automatically synchronized with the second HDD module in the QFX3100
Director device, and the other QFX3100 Director device in the QFX3100
Director group.
Before you begin installing an HDD module in a QFX3100 Director device:
Ensure that you understand how to prevent electrostatic discharge (ESD) damage.
See "Prevention of Electrostatic Discharge Damage" on page
Ensure that you have the following parts and tools available:
ESD grounding strap
To install an HDD module in a QFX3100 Director device (see
Attach the ESD grounding strap to your bare wrist, and connect the strap to a site ESD
1.
point.
Taking care not to touch HDD module components, pins, leads, or solder connections,
2.
remove the HDD module from its bag.
If the Director device is powered on, at least one HDD module must be installed at all
3.
times. You should only perform this step when an HDD module in the other HDD slot
is installed and operational.
If an HDD module in the HDD module slot needs to be removed, remove the HDD
module. See "Removing an HDD Module from a QFX3100 Director Device" on page 599
Ensure that the HDD module is properly aligned with the HDD module slot. The HDD
4.
module faceplate should be aligned so the screws are aligned with the top of the HDD
module slot.
Chapter 40: Replacing QFX3100 Components
Athough the HDD is hot-swappable, to ensure memory is
360.
Figure 239 on page 602):
601