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1–17
Field Replacement Utility
Use the field replacement utility (FRUTIL) to replace a failed controller (in a dual-
redundant configuration) without shutting down the subsystem.You can also use this
menu-driven utility to replace cache modules, external cache batteries, and the PVA
module.
Change Volume Serial Number Utility
Only Compaq authorized service personnel may use this utility.
The Change Volume Serial Number (CHVSN) utility generates a new volume serial
number (called VSN) for the specified device and writes it on the media. It is a way to
eliminate duplicate volume serial numbers and to rename duplicates with different
volume serial numbers.
Device Statistics Utility
The Device Statistics (DSTAT) utility allows you to log I/O activity on a controller
over an extended period of time. Later, you can analyze that log to determine where
the bottlenecks are and how to tune the controller for optimum performance.
Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide
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