Contents
 AIX AK April 2005 Forschungszentrum Karlsruhe
 IBM Storage with Linux
 Topics
  What is supported
What Is Supported
 IBM Storage Support for Linux
  DS6000, DS8000 SLES8, SLES9, RH-EL
PLinux Support Disk
 DS4000 SLES8, SLES9, RH-EL
  Parallel Scsi attachment also supported  Advanced
PLinux Support Tape
 LTO Sles 8, Sles 9, RH-EL
 359x Sles 8, Sles 9, RH-EL
 Linux Scsi Subsystem
 Everything is a file
Linux Device Addressing
 Upper level
Design
 Linux Kernel Version
 Storage Changes in Linux Kernel
 Still there
Wellknown Linux Scsi Limitations
  Multiple LUN support of RH-EL  DS4000 Specific
Other Problems and Pitfalls
 ESS, DS6000, DS8000 Specific
  Linux Kernel Limits
Large filesystems support
 Multipathing Scenarios
 Multipathing Concepts
 LUN Transfer to Alternate Controller
 Two multipathing solutions available
 DS4000 transfers LUNs to alternate controller
 LUN Thrashing Scenario
 LUN Thrashing Scenario
 LUN Thrashing Scenario
 Multipathing with Rdac
 Must run mppUpdate after each configuration change
 Rdac Shared Data Scenario
 Rdac Shared Data Scenario
 Rdac Shared Data Scenario
  DS6000 uses concept of preferred path
Preferred Path
 SDD knows preferred path automatically
 Preferred Path Shared Data Scenario
 Preferred Path Shared Data Scenario
 Preferred Path Shared Data Scenario
 Preferred Path Shared Data Scenario
  ESS and DS8000 have independent host ports
Host Ports Independent of Controller
 Independent Host Port Shared Data Scenario
 Independent Host Port Shared Data Scenario
 Independent Host Port Shared Data Scenario
 Tape Specifics
  Daemon IBMtaped
IBMtape driver
 IBMtapeUtil
 Build and install using make  Provides
 For download as source code
  Native
Use LTO Devices
 3rd party applications
 Native Library Management
 Medium Changer Failover
 One driver for all HBAs
Tape and Disk Connected to the Same HBA
 Questions & Discussion
 ESS / DS6000 / DS8000 Resources
 DS4000 Resources
 LTO Resources
 Redbooks
 White Papers
 Legal Notices