HP Array Controller HSG V8.7 Software - Manual (Page 22)

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Required Tools
You will need the following tools to service the controller, cache
module, external cache battery (ECB), the Power Verification and
Addressing (PVA) module, the Gigabit Link Module (GLM), and the
I/O module:
n A flathead screwdriver for loosening and tightening the I/O module
retaining screws.
n A small phillips screwdriver for loosening and tightening the GLM
access door screws.
n An antistatic wrist strap.
n An antistatic mat on which to place modules during servicing.
n 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.