Fibre channel (FC) cables connect the Primary Shelf to the appliance.
Four SAS cables connect the Expansion Shelf to the Primary Shelf. The Expansion Shelf is not directly
connected to the appliance.
Onsite Policies and Procedures
Electrical safety
The static discharged by human bodies can damage static-sensitive components on the boards.
When installing and maintaining the equipment, observe appropriate electrostatic safety precautions
to prevent personnel injuries or device damage.
When operating a device in an electrostatic sensitive area, you must take electrostatic-discharge
(ESD)-preventive measures. These include wearing ESD-preventive gloves, an ESD-preventive wrist
strap, and ESD-preventive clothes to avoid personnel injury or device damage.
To prevent damage to the device, pay attention to the following during operations:
• Do not touch devices with bare hands because ESD from the human body may damage the
electrostatically sensitive elements on a board.
• When dealing with the server or any of the internal components, wear an ESD-preventive wrist
strap, ESD-preventive gloves, and ESD-preventive suit.
Hardware part replacement procedure
Removing and replacing 53xx RAID or disk storage power cable
This document describes how to replace a NetBackup 5330 RAID or disk storage power cable to the
primary storage shelf or the expansion storage shelf while the appliance is operating. One of the
power cables to each storage shelf must be operating at all times.
Review the following:
• If both power cables must be removed at the same time on the Primary Storage Shelf, ensure that
there are no I/O operations on the appliance in progress, and then turn off the Primary Shelf.
• If both power cables must be removed at the same time on the Expansion Storage Shelf, ensure
that there are no I/O operations on the appliance in progress and power off the Primary Shelf.
After the Primary Shelf has powered off (all displays are completely off), then turn off the Expansion
Shelf.
This repair can be accomplished with the Primary storage shelf and the Expansion shelf installed in
the rack.
Requirements
NetBackup 5330 replacement power cable
3
HSP #144: Storage Power Cable Replacement
