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304 DS6000 Series: Concepts and Architecture
Other publications
Apart from the DS6000 Host Systems Attachment Guide, GC26-7680, 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 DS6000 disks. They prepare the Object Data
Manager
(ODM) with information about the subsystem. That way the DS6000 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 DS6000 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
DS6000 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 DS6000 disks to a pSeries server, the World Wide Port Name (WWPN) of
each of the pSeries Fibre Channel adapters has to be registered in the DS6000. 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