Compaq 3000 - Manual (Page 18)

RAID Array 3000 Controller Shelf
1–6 EK–SMCPQ–UG. C01
Figure 1–3 shows the major components in the controller shelf. Its characteristics
are outlined below.
•
An easily removable, two channel, resident RAID Array controller and an ad-
jacent empty slot for a second (redundant) controller (optional)
•
There are two 68-pin VHDCI female SCSI connectors on the front panel of the
device I/O assembly which interconnect the RAID controller to the SCSI
buses in each storage shelf. SCSI connections to multiple Device Expansion
Shelves are made using Trilink adapters
•
The front of the shelf contains two LEDs that monitor the status of the shelf
and the shelf dc power supplies
•
The front of the shelf has a toggle switch that allows the operator to disable
the shelf alarm during an error condition
•
The shelf host I/O assemblies each contain two 68-pin VHDCI female SCSI
connectors that interconnect the host systems to the RAID controller
•
Each host I/O assembly contain a 9-pin serial port connector (for controller
configuration) and a 9-pin UPS monitor connector
•
Two dc power supplies (one redundant) that power the shelf components
•
The shelf contains two high-speed, plug-in blowers for shelf cooling
Figure 1–3 Controller Shelf Major Components
S H R-10 51
D C P ow er
Su pp lie s
B low er s
R AID
C o ntr oller
H ost 0
I/O M od ule H o st 1
I/ O Mo du le
B la nk
Pa ne l
D ev ice I /O
M od ule