Major Components; Figure 1-10 Environmental Monitor Unit (Emu); Figure 1-11 Power Verification And Addressing (Pva) Module - Compaq RA8000 User Manual

RA8000 and ESA12000 Storage Subsystems
1.2

Major Components

A fully configured redundant subsystem (Figure 1-4) consists of the following major
components:
1) A BA370 Rack mountable enclosure (1)
2) Cooling Fan (8)
3) Single-Ended I/O Modules (6)
4) Optional Fibre Channel or UltraSCSI Hub
(12-port Fibre Channel Hub shown)
5) Cache module (2)
6) HSG80 Fibre Channel RAID Array controllers (2) or
HSZ80 SCSI RAID Array Controllers (2)
7) Power Verification and Addressing (PVA) Module (1)
8) Environmental Monitor Unit (EMU) (1)
9) AC Input Power Controllers (1 standard, 2 shown in Figure 1–4)
10) 180-watt power supply (5 standard, 8 shown in Figure 1-4)
11) External Cache Battery (ECB), single
External Cache Battery (ECB), dual
Also, Power Distribution Unit (2) Not shown, mounted in ESA12000 cabinet only
1–6 387404-001 EK–SMCPR–UG. A01