HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Maintenance and Service Guide (EK-G80MS-SA. C01, March 2005)

Common Replacement Information and Procedures
48 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Precautions
To prevent accidental damage to subsystem components, always follow the
precautions in this section when carrying out the procedures in this guide.
Electrostatic discharge precautions
Static electricity collects on all non-conducting material, such as paper, cloth, and
plastic. An electrostatic discharge (ESD) can easily damage the array controller or
other subsystem components even though the discharge might not be seen or felt.
ESD is a common problem and can cause data loss, system downtime, and other
problems. The most common source of static electricity is the movement of
people in contact with carpets and clothing. Low humidity increases the amount
of static electricity.
Observe the following precautions whenever servicing a subsystem or subsystem
component:
■ Always use an ESD wrist strap if you are servicing the array controller or
other components in the subsystem. Ensure that the strap contacts bare skin,
fits snugly, and that the strap grounding lead is attached to a bus with a
verified earth ground.
■ Before touching any circuit board or component, always touch a verified earth
ground to discharge any static electricity that might be present in clothing.
■ Always keep circuit boards and components away from non-conducting
material.
■ Always keep clothing away from circuit boards and components.
■ Always use antistatic bags and grounding mats for storing circuit boards or
components during replacement procedures.
■ Always keep the ESD cover over the program card if the card is in the array
controller. If a card is removed, put the card in the original carrying case.
■ Never touch the contacts, or twist or bend the program card.
■ Never touch the connector pins of a cable if one end is attached to a
component or host.