IBM AIX-AK FZK 2005 manual Legal Notices

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IBM Systems Group

Legal Notices

Both Linux and Storage are rapidly changing environments.

This information is presented "as is" without any warranty of any kind. Customers are responsible for determining the suitability to their respective environments.

Only a representative subset of the IBM offerings are presented here. Products not mentioned should not be interpreted as a lack or withdrawal of support of those products.

Information concerning non-IBM products was obtained from a supplier of these products, published announcement material, or other publicly available sources. Questions on the capability of non-IBM products should be addressed to the supplier of those products.

Some information in this presentation addresses anticipated future capabilities. Such information is not intended as a definitive statement of a commitment to specific levels of performance, function or delivery schedules with respect to any future products. Such commitments are only made in official IBM product announcements. All statements regarding IBM future direction and intent are subject to change or withdraw without notice, and represent goals and objectives only.

The information is presented here to communicate IBM's current investment and development activities as a good faith effort to help with our customers' future planning. Contact your local IBM business contact for details on specific products, programs or services.

The following are trademarks or registered trademarks of the International Business Machines Corporation:

AIX, AS/400, AS/400e, CICS, DB2, DB2 Universal Database, e-business (logo), Enterprise Storage Server, the eServer logo, ESCON, FlashCopy, IBM, Intellistation, iSeries, Magstar, Modular Storage Server, MQSeries, Netfinity, NUMA-Q, OS/390, OS/400, Parallel Sysplex, pSeries, RS/6000, S/390, SANergy, Seascape, Sequent, Sequent (logo), SP, SP2, SSA, StorWatch, Thinkpad, Tivoli, Tivoli Storage Manager, Ultrastar, WebSphere, xSeries, zSeries.

Microsoft, Windows, Windows NT and the Windows logo are registered trademarks of Microsoft Corporation. Intel and Pentium are registered trademarks of Intel Corporation. UNIX is a registered trademark licensed exclusively through the OPEN group. LINUX is a registered trademark of Linus Torvalds. Java and all Java-based trademarks and logos are trademarks of Sun Microsystems, Inc.

Red Hat, the Red Hat "Shadow Man" logo, RPM and all Red Hat-related logos are trademarks or registered trademarks of Red Hat, Inc. Caldera Systems, the C-logo, SCO, and related logo, are trademarks or registered trademarks of Caldera Systems, Inc. Turbolinux and "lightning bolt" logo are registered trademarks of Turbolinux, Inc. SuSE, and SuSE "lizard" logo, are trademarks of SuSE, Inc.

Linux is a registered trademark of Linus Torvalds

Other company, product and service names may be trademarks or service marks of others.

AIX-AK FZK 2005

© 2005 IBM Corporation

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