Defining The Paths - HP StorageWorks P9000 Configuration Manual

IMPORTANT:
host, HP does not recommend:
Sharing of CHA (channel adapter) microprocessors
Multiple host groups sharing the same CHA port
NOTE: As illustrated in
microprocessor sharing with 8-port module pairs. With 16- and 32-port module pairs, alternating
ports are shared.
Table 14 Microprocessor port sharing (OpenVMS)
Channel Model
adapter
AE020A 8HSR
AE006A 16HSR
AE007A 32HSR
AE021A 8FS2R
AE022A 16FS2R
AE023A 32FS2R

Defining the paths

Use Command View Advanced Edition or Remote Web Console to define paths between hosts
and volumes (LUNs) in the disk array.
This process is also called "LUN mapping." In Remote Web Console, LUN mapping includes:
Configuring ports
Enabling LUN security on the ports
Creating host groups
Assigning Fibre Channel adapter WWNs to host groups
Mapping volumes (LDEVs) to host groups (by assigning LUNs)
Path configuration for OpenVMS requires the following steps:
1. Define one command device LUN per array and present it to the OpenVMS hosts across all
connected paths.
2. If host mode option 33 is not enabled, for all LUNs, determine the device number as follows
(once OpenVMS sees the P9000 disks):
OpenVMS device name ($1$dgaxxx), where xxx = CU with LDEV appended (Then convert
the created number from hex to decimal)
Example
For a LUN with a CU of 2 and an LDEV of 59:
CU with LDEV appended = 259
259 hex = 601 decimal
The example LUN is presented to OpenVMS as $1$dga601.
For optimal performance when configuring any P9000 disk array with a Tru64
"Microprocessor port sharing (OpenVMS)" (page
Description
8-port 2GB CHIP Pair
16-port 2GB CHIP Pair
32-port 2GB CHIP Pair
8-port 4GB CHIP Pair
16-port 4GB CHIP Pair
32-port 4GB CHIP Pair
Nr. of ports per Ports shared
microprocessor
1 N/A
2 CL1 - 1 & 5; 3 & 7
CL2 - 2 & 6; 4 & 8
2 CL1 - 1 & 5; 3 & 7
CL2 - 2 & 6; 4 & 8
1 N/A
2 CL1 - 1 & 5; 3 & 7
CL2 - 2 & 6; 4 & 8
2 CL1 - 1 & 5; 3 & 7
CL2 - 2 & 6; 4 & 8
Installing and configuring the disk array
53), there is no
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