2–25

Setting the PVA Module ID Switch

The Power, Verification, and Addressing (PVA) module provides unique addresses to extended subsystems. Each BA370 rack-mountable enclosure in an extended subsystem must have its own PVA ID. Use PVA ID 0 for the enclosure that contains the controllers. Use PVA IDs 2 and 3 for the additional enclosures. Figure 2–4illustrates the PVA settings in an extended subsystem.

See the documentation that accompanied your enclosure for more details about the PVA and its settings.

First Expansion

Enclosure

SCSI Target ID = 11

SCSI Target ID = 10

SCSI Target ID = 9

SCSI Target ID = 8

EMU

PVA 2

 

 

 

 

Master

Enclosure

SCSI Target ID = 3

SCSI Target ID = 2

SCSI Target ID = 1

SCSI Target ID = 0

EMU

PVA 0

Controller A

Controller B

Cache A Cache B

Second Expansion

Enclosure

SCSI Target ID = 15

SCSI Target ID = 14

SCSI Target ID = 13

SCSI Target ID = 12

EMU

PVA 3

 

 

 

 

NOTE: SCSI target IDs 4 and 5 are reserved. IDs 6 and 7 are used by the controllers.

CXO5806B

Figure 2–4. SCSI Target ID Numbers on the Controller Device Bus and PVA Settings in an Extended Subsystem

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Page 79
Image 79
Compaq HSZ80 manual Setting the PVA Module ID Switch