Compaq HSZ80 manual 2Index, AUTOSPARE, 4-15SET Failedset, Batteryoff Poweroff Batteryon Poweroff

I–2Index

Addresses

providing with the PVA module, 2–25Addressing PTL convention, 3–36

ALLOCATION_CLASS SET controller, 5–93Array of disk drives, 3–8

AUTOSPARE, 4–15SET FAILEDSET, 5–108

Autospare failedset, 4–15

Availability, 3–15

B

BA370 rack-mountable enclosure parts, 1–4

Backing up data, 3–20

Backing up data with the Clone utility, 1–16Backplane

location, 1–8Backup power source

enabling write-back caching, 1–22Battery hysteresis, 1–31

BATTERY_OFF POWEROFF, 5–74

BATTERY_ON POWEROFF, 5–74

Building blocks

AC input module, 1–4

BA370 rack-mountable enclosure, 1–4cache module, 1–4

controller, 1–4cooling fan, 1–4disk drives, 1–4dual-battery ECB, 1–4EMU, 1–4

I/O module, 1–4

power cable, 1–4power cable kit, 1–4power supply, 1–4 PVA module

SCSI hub, 3-port, 1–4SCSI hub, 5-port, 1–4SCSI hub, 9-port, 1–4single-battery ECB, 1–4

Bus

device bus interconnect, 1–5distribute members across, 3–15,3–17distributing first mirrorset members, 3–14distributing members across, 3–11

C

Cables

maintenance port cable part number for a terminal, 1–12

tightening, xvii Cache module

caching techniques, 1–20companion cache module, 1–18controller and cache module location, 1–13DIMMs supported, 1–5,1–18

general description, 1–18illustration of parts, 1–19location, 1–2,1–13

maximum memory size supported, 1–5memory configurations, 1–18memory sizes supported, 1–5

parts, 1–4

read caching, 1–20read-ahead caching, 1–20relationship to controller, 1–13

replacing cache modules with FRUTIL, 1–17write-back caching, 1–21