IBM DS8000 Other publications, AIX host attachment scripts, Finding the World Wide Port Names

Other publications

Apart from the DS8000 Host Systems Attachment Guide, SC26-7628, there are two redbooks that cover pSeries storage attachment:

￿Practical Guide for SAN with pSeries, SG24-6050, covers all aspects of connecting an AIX host to SAN-attached storage. However, it is not quite up-to-date; the last release was in 2002.

￿Fault Tolerant Storage - Multipathing and Clustering Solutions for Open Systems for the IBM ESS, SG24-6295, focuses mainly on high availability and covers SDD and HACMP topics. It also is from 2002.

Much of the technical information for pSeries or AIX also covers external storage, since SAN attachment became standard procedure in almost all data centers of size with a claim to availability.

The AIX host attachment scripts

AIX needs some file sets installed to support DS8000 disks. They prepare the Object Data Manager (ODM) with information about the subsystem. That way the DS8000 volumes are identified properly and all performance parameters optimized.

For the ESS under AIX there was a set of Host Attachment scripts which could be downloaded from the Web. For the DS8000 using AIX SDD 1.6.0.0, these scripts have been consolidated into one called FCP Host Attachment Script. The most up-to-date version for the DS8000 can be downloaded from:

http://www-1.ibm.com/support/dlsearch.wss?rs=540&q=host+scripts&tc=ST52G7&dc=D417

Finding the World Wide Port Names

In order to allocate DS8000 disks to a pSeries server, the World Wide Port Name (WWPN) of each of the pSeries Fibre Channel adapters have to be registered in the DS8000. You can use the lscfg command to find out these names, as shown in Example A-4.

Example: A-4 Finding Fibre Channel adapter WWN

lscfg -vl fcs0
fcs0	U1.13-P1-I1/Q1	FC Adapter
	Part Number	00P4494
	EC Level	A
	Serial Number	1A31005059
	Manufacturer	001A
	Feature Code/Marketing ID...	2765
	FRU Number	00P4495
	Network Address	10000000C93318D6
	ROS Level and ID	02C03951
	Device Specific.(Z0)	2002606D
	Device Specific.(Z1)	00000000
	Device Specific.(Z2)	00000000
	Device Specific.(Z3)	03000909
	Device Specific.(Z4)	FF401210
	Device Specific.(Z5)	02C03951
	Device Specific.(Z6)	06433951
	Device Specific.(Z7)	07433951
	Device Specific.(Z8)	20000000C93318D6
	Device Specific.(Z9)	CS3.91A1
	Device Specific.(ZA)	C1D3.91A1

348DS8000 Series: Concepts and Architecture