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
359x Sles 8, Sles 9, RH-EL
PLinux Support Tape
LTO 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
