Specifications

2–2 Compaq StorageWorks HSG80 Array Controller ACS Version 8.5 Maintenance and Service Guide
Required Tools
The following tools are needed to service a controller, cache module, ECB, PVA module,
GLM, and I/O module:
■ a flathead screwdriver for loosening and tightening the I/O module retaining screws
■ a small phillips screwdriver for loosening and tightening the GLM access door screws
■ a pair of needle-nose pliers to remove the switch cables from the controller
■ an antistatic wrist strap
■ an antistatic mat on which to place modules during servicing
Precautions
Follow the precautions in this section when carrying out the procedures in this guide.
Component Precaution
System components referenced in this manual comply with regulatory standards
documented herein. Use of other components in their place might violate country
standards, negate regulatory compliance, or invalidate the product warranty.
Electrostatic Discharge Precautions
Static electricity collects on all nonconducting material, such as paper, cloth, and plastic.
An electrostatic discharge (ESD) can easily damage a controller or other subsystem
component even though the discharge might not be seen or felt. ESD is a common
problem and might cause data loss, system down time, and other problems. The most
common source of static electricity is the movement of people in contact with carpets and
clothing. Low humidity also increases the amount of static electricity. Discharge all static
electricity prior to touching electronic equipment.
Observe the following precautions whenever servicing a subsystem or one of its
components:
■ Always use an ESD wrist strap when servicing the controller or other components in
the subsystem. Make sure that the strap contacts bare skin, fits snugly, and that its
grounding lead is attached to a bus that is a verified earth ground.