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