Compaq 3000 - Manual (Page 35)

RAID Array 3000 Controller Shelf
2–2 EK–SMCPQ–UG. C01
Figure 2–1 RAID Array 3000 Single Controller Block Diagram
RAID Array 3000
Controller Shelf H0
Port 0
H1
Port 1
Write-Back
Cache
Module
2 Device Ports
Device I/O
Assy
Host I/O
Assy
Host
System 0
Host
System 1
Cache
Interface
Controller / Bus
Modules
RAID Controller
Ultra SCSI Wide
Single-Ended
Interface
To UPS
CTR Serial
Interface
UPS Control
Interface
Device
Storage
Shelves
Maintenance PC
SHR-1050
Ultra SCSI
Differential, Wide
Interface