Technical data

I–5
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
no controller termination, 4–33
CLI event reporting, 4–35
spontaneous event log, 4–34
Exercising drives and units, 4–55
F
Fault remedy table, 4–6
Fault-tolerance for write-back caching
general description, 4–17
nonvolatile memory, 4–17
Field Replacement utility. See FRUTIL
Finding
devices, 4–55
Firmware
upgrading with HSUTIL, 3–14
Flashing OCP
events
controller termination, 4–25
FMU
displaying current display settings, 4–43
enabling event logging, 4–41
enabling repair-action logging, 4–41
enabling timestamp, 4–42
enabling verbose logging, 4–42
general description, 4–36
interpreting last-failures, 4–36
interpreting memory-system failures, 4–36
logging last-failure codes, 4–41
setting display for, 4–40
translating event codes, 4–39
FRUTIL
general description, 4–63
H
History, revision of this manual, xxiv
Host
checking transfer rate to controller, 4–45
Host port
checking status, 4–45
HSG80 Array Controller. See Controller
HSUTIL
general description, 4–61
upgrading device firmware, 3–14
Hysteresis. See Battery hysteresis
I
I/O
checking to devices, 4–48
checking to host, 4–45
checking to units, 4–51
logging I/O activity with DSTAT, 4–64
I/O module
part number, 1–3, A–3
replacing, 2–46
replacing in a dual-redundant controller
configuration, 2–46
replacing in a single-configuration controller,
2–46
Installing
cache module
dual-redundant controller configuration,
2–34
single-controller configuration, 2–14
controller
dual-redundant controller configuration,
2–28
single-controller configuration, 2–11