Compaq RA8000 User Manual page 55

RA8000 and ESA12000 Storage Subsystems
ESA12000 Major Components (Figure 2–5):
1) HSG80 Fibre Channel RAID Array controllers (2) or
HSZ80 SCSI RAID Array Controllers (2)
2) Environmental Monitor Unit (EMU) (1)
3) AC Input Power Controllers (1 standard, 2 shown in Figure 2–5)
4) Disk Drive SBB (24)
5) 180-watt power supply (5 standard, 8 shown in Figure 2–5)
6) External Cache Battery (ECB), single
External Cache Battery (ECB), dual
7) Cooling Fan (8)
8) Single-Ended I/O Modules (6)
9) Power Verification and Addressing (PVA) Module (1)
10) Cache module (2)
Also, Power Distribution Unit (2) Not shown, mounted in ESA12000 cabinet only
2–6 387404–001 EK–SMCPR–UG. A01