xx About This Guide
Required Tools
You’ll need the following tools to service the controller, cache module, external cache
battery (ECB), the Power Verification and Addressing (PVA) module and the 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.
■ An antistatic wrist strap.
■ An antistatic mat on which to place modules during servicing.
■ A Storage Building Block (SBB) Extractor for removing StorageWorks building
blocks. This tool is not required, but it will enable you to perform more
efficiently.