README v3.01 for DM-MPIO Configuration file for IBM DS8000 DS6000 SVC and ESS



				  Aug 05, 2010











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CONTENTS







1.0 About this README file



1.1    Who should read this README file



1.2    How to get help



2.0 Prerequisites for Multipath Configuration File



3.0 Change History



4.0 Supported IBM Storage Servers



5.0 Installation and Usage.



6.0 Notice



7.0 Trademarks and service marks











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1.0     About this README file







        This README file contains the most recent information about the



        Red Hat Enterprise Linux Server 5 (RHEL 5), 



        SUSE(R) Enterprise Linux Server 10 (SLES 10) and 



        SUSE(R) Enterprise Linux Server 11 (SLES 11) DM-MPIO configuration 



        file multipath.conf for IBM DS8000 / DS6000 / ESS / SVC











1.1     Who should read this README file







        This README file is intended for storage administrators, system



        programmers, and performance and capacity analysts.  The information in



        this file only applies to customers who run:

        

         1. DS8000

         

         2. DS6000

         

         3. SAN Volume Controller

      

         4. ESS



1.2     How to get help





     Go to the following Web site for IBM Total Storage DS8000 support:

     

        http://www.ibm.com/servers/storage/disk/ds8000/index.html



     Go to the following Web site for IBM Total Storage DS6000 support:

     

        http://www.ibm.com/servers/storage/disk/ds6000/index.html



     Go to the following Web site for IBM System Storage SAN Volume Controller support:

     

        http://www.ibm.com/servers/storage/support/virtual/2145.html



     Go to the following Web site for the IBM ESS Open Systems support:

     

        http://www.storage.ibm.com/hardsoft/products/ess/supserver.htm





2.0  	Prerequisites for Multipath Configuration File

      

      

	For RHEL 4:



	- the minimum level required is RHEL 4.7







        - the "in-box" kernel-mode device mapper multipath module



               device-mapper-1.02.25-2.el4 in RHEL 4.7







        - the "in-box" userspace multipath-tools



               device-mapper-multipath-0.4.5-31.el4 in RHEL 4.7







        For RHEL 5: 



        - the minimum level required is RHEL 5.2



  



        - the "in-box" kernel-mode device mapper multipath module



               device-mapper-1.02.24-1.el5 in RHEL 5.2







        - the "in-box" userspace multipath-tools



               device-mapper-multipath-0.4.7-17.el5 in RHEL 5.2











        For SUSE 10: 



        - The minimum level required is SLES 10.2







        - the "in-box" kernel-mode device mapper multipath module



              device-mapper-1.02.03-6.14 in SLES 10.2







        - the "in-box" userspace multipath-tools



              multipath-tools-0.4.7-34.38 in SLES 10.2



	



        For SUSE 11: 



        - The minimum level required is SLES 11







        - the "in-box" kernel-mode device mapper multipath module



              device-mapper-1.02.27-8.6 in SLES 11







        - the "in-box" userspace multipath-tools



              multipath-tools-0.4.8-40.1 in SLES 11



	



3.0  	Change History



      



	v3.01:



	First version for IBM DS8000 / DS6000 / ESS / SVC support.







4.0  	Supported IBM storage Servers



	



     	IBM DS8000 / DS6000 / ESS / SVC



	



5.0  	Installation and Usage







	     The file needs to be copied into the "/etc" directory. Make a backup of any



      	existing /etc/multipath.conf before copying in this file.







      	If this file is copied to the "/etc" directory after the device mapper multipath 



      	driver and multipath-tools daemon are started, you will have to run the "multipath" 



        command from the command line to reload the settings from the multipath.conf file.







6.0   Notices







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