HP StorageWorks HSG80 ACS Solution Software V8.8 for HP-UX Installation and Configuration Guide (AA-RV1FA-TE, March 2005)

Planning Storage Configurations
70 HSG80 ACS Solution Software V8.8 for HP-UX Installation and Configuration Guide
■ L—Designates the logical unit (LUN) of the device. For disk devices the
LUN is always 0.
Figure 21: 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.
The controller operates with BA370 enclosures that are assigned ID numbers 0, 2,
and 3. These ID numbers are set through the PVA module. Enclosure ID number
1, which assigns devices to targets 4 through 7, is not supported. Figure 22 shows
how data is laid out on disks in an extended configuration.
Figure 22: How data is laid out on disks in BA370 enclosure configuration
1 02
LUN 00
Target 02
Port 1
Disk 10200
Virtual disk
Block 0
Block 1
Block 2
Block 3
Block 4
Block 5
etc.
Disk 1
Block 0
Block 3
etc.
Disk 2
Block 1
Block 4
etc.
Disk 3
Block 2
Block 5
etc.
Operating
system
view
Actual
device
mappings
Stripeset
CXO4592B