HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide

Table Of Contents
Planning Storage Configurations
2–5HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and
Configuration Guide
2–5
The HSG80 controller identifies devices based on a Port-Target-LUN (PTL)
numbering scheme, shown in Figure 2–2. The physical location of a device in its
enclosure determines its PTL.
P—Designates the controller's SCSI device port number (1 through 6).
T—Designates the target ID number of the device. Valid target ID numbers for a
single-controller configuration and dual-redundant controller configuration are 0 -
3 and 8 - 15, respectively. (This applies to the BA370 cabinet only.)
L—Designates the logical unit (LUN) of the device. For disk devices the LUN is
always 0.
Figure 2–2: PTL naming convention
The controller can either operate with a BA370 enclosure or with a Model 2200
controller enclosure combined with Model 4214R, Model 4254, Model 4310R, Model
4350R, Model 4314R, or Model 4354R disk enclosures.
1 02 00
LUN 00
Target 02
Port 1