IBM GPFS V3.4 offers enhanced Windows cluster support and performance and scalability improvements
IBM United States Software Announcement 210-167July 27, 2010
 ENUS210-167.PDF (118KB)
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| At a glance |
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General Parallel File System™ (GPFS™) V3.4 offers enhanced Windows® support, further improvements to performance, and scalability through extended file attribute support improvements, and a new diagnostic command.
For ordering, contact your IBM® representative, an IBM Business Partner, or IBM Americas Call Centers at 800-IBM-CALL (Reference: YE001).
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| Overview |
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IBM GPFS is a cluster file system designed for high-performance parallel file transfers and parallel I/O to single or multiple files. GPFS delivers proven reliability, multicluster support, scalability, and performance with automated failure recovery, and decentralized data management for simplifying administration.
GPFS V3.4 adds support for:
- Enhanced Windows cluster support:
- Windows Server 2008 R2 x64.
- Directly attached disks support higher bandwidth via local I/O: The use of fully SAN-connected Windows clusters may enable much higher bandwidth to Windows systems using GPFS, and SAN connectivity may provide greater flexibility in configuring GPFS clusters.
- Homogeneous Windows clusters: GPFS clusters can now be formed using only Windows nodes; Linux® or AIX® are
no longer required as NSD servers. The Windows nodes can perform most of the
required management and administrative operations. The exceptions include:
- Certain GPFS commands to apply policy, administer quotas and ACLs.
- The ability to mount DMAPI-enabled file systems.
- Support for Tivoli® Storage Manager (TSM) Backup Archive client or the native Windows Backup utility
Refer to the GPFS Concepts, Planning and Installation Guide for a full list of limitations.
- Further improvements in performance and scalability:
- Extended attributes for a file can now be stored in the file's i-node. This can improve the performance of applications that use extended attributes and reduce the amount of disk space required to store them. This change enables the high-performance GPFS policy engine to refer to extended attributes with the same scale-out performance as the regular file attributes, providing richer semantics to content managers and middleware.
- Support for more than 2,147,483,648 files in a file system. For the current maximum tested limit, see the GPFS FAQs at
- A new diagnostic command: The new mmdiag command better enables IBM Service to determine the state of your GPFS cluster.
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| Key prerequisites |
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Refer to the Hardware requirements and Software requirements sections.
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| Planned availability date |
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July 30, 2010
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| Description |
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GPFS delivers file system services to parallel and serial applications. It gives parallel applications simultaneous access to the same or different files from any node that has the GPFS file system mounted, while managing a high level of control over all file system operations. GPFS is particularly appropriate in an environment where the aggregate peak need for data bandwidth exceeds the capability of a distributed file system server.
Accessibility by people with disabilities
A U.S. Section 508 Voluntary Product Accessibility Template (VPAT) containing details on accessibility compliance can be requested at
Section 508 of the U.S. Rehabilitation Act
GPFS is capable as of June 11, 2010, when used in accordance with IBM's associated documentation, of satisfying the applicable requirements of Section 508 of the Rehabilitation Act, provided that any assistive technology used with the product properly interoperates with it. A U.S. Section 508 Voluntary Product Accessibility Template (VPAT) can be requested at
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| Product positioning |
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GPFS is ideal for several different workloads:
- A multicluster file system providing a global namespace across clusters for parallel processing on compute clusters, featuring extreme scalability and throughput optimized for streaming workloads such as those common in Web 2.0, digital media, scientific, and engineering applications.
- An information life cycle management file system, enabling multiple tiers of storage, including tape, with powerful policy-driven file placement, migration, archival, and deletion. This makes GPFS the perfect base for a content library or archival system by mixing cost-effective storage of infrequently accessed data with the global namespace for easy accessibility. The unique GPFS policy engine enables file migration scalable to billions of files and multiple petabytes of data.
- A scalable, shared storage file system for storage consolidation and virtualization. This includes Clustered NFS support, providing a scalable shared namespace, enabling horizontally scalable file serving. Additionally, GPFS includes many storage management features, including storage hardware-agnostic snapshots, and mirroring.
- A high availability file system for any business application or database that may benefit from active/active data access from multiple nodes and very rapid failover of a consistent application data environment.
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| Reference information |
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Refer to Software Announcement 210-168, dated July 27, 2010.
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| Program number |
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Program Program number VRM name 5765-G66 3.4 IBM GPFS on POWER 5765-XA3 3.4 IBM GPFS on x86 Architecture
Product identification number
Maintenance Maintenance
Program PID number 1-year PID number 3-year PID number
5765-G66 5660-SGP 5662-SGP
5661-SGP 5663-SGP
5664-SGP
5765-XA3 5660-XA3 5662-XA3
5661-XA3 5663-XA3
5664-XA3
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| Electronic Software Update orders |
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Entitled Software Update (ESU) is a way for customers to self-order their Power® software release upgrades via the Entitled Software Support (ESS) Web site without the need to go to their seller to place the upgrade order. Entitled Software Update (ESU) orders for Electronic Software Delivery (ESD) is now available in all countries.
ESU orders for software will be placed on the Entitled Software Support (ESS) Web site
Customers should generally select electronic delivery when ordering via ESU but do have the ability to select physical delivery. Programs ordered for ESD will have the same download images provided as on the CD media shipped for physical orders. Countries requiring physical delivery of License Information documentation will have these documents shipped separately. This physical shipment will not delay the immediate availability of the ESD images for customer download.
ESD customers placing ESD software orders will receive an e-mail with the software order information. The ESU customer will be able to immediately proceed to the Downloads Web site for program access instead of waiting for delivery of a physical package shipped from IBM.
Customers choosing physical delivery will also have the electronic images available for ESD download.
- ESD help (instructions on how to use)
- ESD sign-in (must have customer number and product software entitlements to get in)
- List of Power software products that are available for electronic download
Note: The GPFS on x86 Architecture product is not available for
initial delivery via ESS.
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| Offering Information |
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Product information is available via the Offering Information Web site
Business Partner information
If you are a Direct Reseller - System Reseller acquiring products from IBM, you may link directly to Business Partner information for this announcement. A PartnerWorld ID and password are required (use IBM ID).
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| Publications |
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No publications are shipped with this program.
The following publications are available from the Web:
- IBM GPFS Concepts, Planning, and Installation Guide (GA76-0413)
- IBM GPFS Administration and Programming Reference (SA23-2221)
- IBM GPFS Advanced Administration and Programming Reference (SC23-5182)
- IBM GPFS Problem Determination Guide (GA76-0415)
- IBM GPFS Data Management API Guide (GA76-0414)
To access the above GPFS documentation, refer to the IBM Cluster Information Center Web site. This Web site contains the most recent GPFS documentation in PDF and HTML formats and is located at
The IBM Publications Center
The Publications Center is a worldwide central repository for IBM product publications and marketing material with a catalog of 70,000 items. Extensive search facilities are provided. Payment options for orders are via credit card (in the U.S.) or customer number for 50 countries. A large number of publications are available online in various file formats, and they can all be downloaded by all countries, free of charge.
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| Technical information |
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Specified operating environment
Hardware requirements
GPFS for POWER is supported on IBM POWER processors with the minimum hardware requirements noted below (unless stated otherwise in the GPFS FAQs):
- GPFS for AIX on POWER is supported on the IBM POWER processors supported by AIX 5.3 or AIX 6.1, with a minimum of 1 GB of system memory.
- GPFS for Linux on POWER is supported on IBM POWER3™, or higher, processors, with a minimum of 1 GB of system memory.
GPFS on x86 Architecture is supported on all IBM ServerProven® servers with the minimum hardware requirements that follow (unless stated otherwise in the GPFS FAQs):
- System x®
- BladeCenter®
- xSeries®
See the IBM ServerProven site at
GPFS for Linux on x86 Architecture, minimum hardware requirements:
- Intel® Pentium® 3, or higher, processor, with a minimum of 1 GB of system memory
- AMD Opteron processors, with a minimum of 1 GB of system memory
GPFS for Windows on x86 Architecture, minimum hardware requirements:
- Intel EM64T processors, with a minimum of 1 GB of system memory
- AMD Opteron processors, with a minimum of 1 GB of system memory
Additionally, see the FAQs for supported connectivity, formally qualified disk subsystems, and use of GPFS on compatible non-IBM hardware.
The GPFS FAQs are available at
Software requirements
For GPFS V3.4, service update 3.4.0-1 is required.
It is suggested that you install the latest service update that is available at
GPFS for AIX on POWER V3.4 is supported on:
- AIX 6.1
- AIX 5.3
GPFS for Linux on x86 Architecture and GPFS for Linux on POWER are supported on the Red Hat Enterprise Linux (RHEL) and SUSE Linux Enterprise Server (SLES) distributions.
For currently supported release levels and the latest supported kernel levels, consult the GPFS FAQs at
GPFS for Windows on x86 Architecture V3.4 is supported on:
- Windows Server 2008 R2 x64
- Windows Server 2008 x64 (Service Pack 2)
Required software from Microsoft® includes Utilities and SDK for UNIX-Based Applications. The Utilities and SDK can be obtained from
For heterogeneous clusters, required software from InteropSystems includes the SUA Community version of OpenSSH. OpenSSH can be obtained from
The program's specifications and specified operating environment information may be found in documentation accompanying the program, if available, such as a readme file, or other information published by IBM, such as an announcement letter. Documentation and other program content may be supplied only in the English language.
Companion products
Related products to GPFS are:
- IBM DS and DCS disk arrays
- Tivoli Storage Manager
- Tivoli Provisioning Manager
- HPSS (High Performance Storage System)
- IBM System Storage® SAN Volume Controller
Compatibility
Nodes running GPFS V3.4 can coexist and interoperate with nodes running GPFS V3.3.
Limitations
For complete and up-to-date information regarding GPFS specifications and capacities, refer to the GPFS on POWER (5765-G66) or GPFS on x86 Architecture (5765-XA3) Sales Manual, and to the GPFS FAQs available at
GPFS on x86 Architecture (5765-XA3) is not available via ESD.
For additional information, refer to usage restrictions in the Terms and conditions section of this announcement or to the License Information document that is available on the IBM Software License Agreement Web site at
Planning information
GPFS V3.4 is the last release to support:
- AIX 5.3
- 32-bit Linux kernels
For GPFS V3.3 and later, new file systems must now be created utilizing Network Shared Disks (NSD) only. IBM Virtual Shared Disk will no longer be supported on new file systems. It is suggested that you purchase new disks to migrate from IBM Virtual Shared Disks to Network Shared Disks.
Installability
For installation information, refer to the GPFS Concepts, Planning, and Installation Guide .
Packaging
IBM GPFS for AIX on POWER and GPFS for Linux on POWER are distributed on individual packages containing installation files and GPFS Client and GPFS Server installation code.
IBM GPFS on x86 Architecture is distributed as a single package containing both Linux and Windows installation files and GPFS Client and GPFS Server installation code.
Installation files include:
- IBM International Program License Agreement in multilanguage booklet (LC23-5091-00) and its License Information in multiple languages (L-LMUY-84AR4T)
- Proof of Entitlement (POE)
- Product readme file that describes the program's specified operating environment and program specifications
GPFS V3.4 program filesets:
AIX:
- .toc
- gpfs.base
- gpfs.docs.data
- gpfs.msg.en_US
Linux on POWER:
- gpfs_install-3.4.0-0_ppc64
Linux on x86 Architecture:
- gpfs_install_3.4.0-0_i386
- gpfs_install_3.4.0-0_x86_64
Windows:
- gpfs-3.4.0.0-WindowsServer2008-x64.msi
Publications are available at
Security, auditability, and control
GPFS uses the security and auditability features of the operating system on which it is installed.
The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities.
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| Software Services |
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IBM Software Services has the breadth, depth, and reach to manage your services needs. You can leverage the deep technical skills of our lab-based, software services team and the business consulting, project management, and infrastructure expertise of our IBM Global Services team. Also, we extend our IBM Software Services reach through IBM Business Partners to provide an extensive portfolio of capabilities. Together, we provide the global reach, intellectual capital, industry insight, and technology leadership to support a wide range of critical business needs.
To learn more about IBM Software Services or to contact a Software Services sales specialist, visit
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| Ordering information |
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Charge metric
Part number or
Program name PID number Charge metric
GPFS for POWER 5765-G66 per processor - small,
medium, or large processor tier
1-year SWMA: 5660-SGP per processor - small,
Registration medium, or large processor tier
and Renewal
1-year SWMA: 5661-SGP per processor - small,
After-license medium, or large processor tier
3-year SWMA: 5662-SGP per processor - small,
Registration medium, or large processor tier
3-year SWMA: 5663-SGP per processor - small,
Renewal medium, or large processor tier
3-year SWMA: 5664-SGP per processor - small,
After-license medium, or large processor tier
GPFS on x86 Architecture 5765-XA3 per processor core - small,
medium, or large processor tier
1-year SWMA: 5660-XA3 per processor core - small,
Registration medium, or large processor tier
and Renewal
1-year SWMA: 5661-XA3 per processor core - small,
After-license medium, or large processor tier
3-year SWMA: 5662-XA3 per processor core - small,
Registration medium, or large processor tier
3-year SWMA: 5663-XA3 per processor core - small,
Renewal medium, or large processor tier
3-year SWMA: 5664-XA3 per processor core - small,
After-license medium, or large processor tier
Withdrawn program features
The following features are withdrawn effective October 29, 2010:
5765-G66 - General Parallel File System for AIX
General Parallel File System for Linux on POWER
Basic license one-time charge
Feature Feature
description number
Client
Small per block of 250 processors 0026
Medium per block of 250 processors 0028
Large per block of 250 processors 0030
Server
Small per block of 250 processors 0032
Medium per block of 250 processors 0034
Large per block of 250 processors 0036
Feature Feature description number 5660-SGP Maintenance no-charge 1-year registration Client Small per block of 250 processors 1418 Medium per block of 250 processors 1422 Large per block of 250 processors 1426 Server Small per block of 250 processors 1394 Medium per block of 250 processors 1399 Large per block of 250 processors 1404 5660-SGP Maintenance 1-year 24 x 7 support Client Small per block of 250 processors 1420 Medium per block of 250 processors 1424 Large per block of 250 processors 1428 Server Small per block of 250 processors 1397 Medium per block of 250 processors 1402 Large per block of 250 processors 1407 5662-SGP Maintenance 3-year registration (2-year uplift) Client Small per block of 250 processors 0685 Medium per block of 250 processors 0690 Large per block of 250 processors 0695 Server Small per block of 250 processors 0661 Medium per block of 250 processors 0666 Large per block of 250 processors 0671 5662-SGP Maintenance 3-year 24 x 7 support Client Small per block of 250 processors 0687 Medium per block of 250 processors 0693 Large per block of 250 processors 0698 Server Small per block of 250 processors 0664 Medium per block of 250 processors 0669 Large per block of 250 processors 0674 5661-SGP 1-year Software Maintenance after-license Client Small per block of 250 processors 0448 Medium per block of 250 processors 0452 Large per block of 250 processors 0456 Server Small per block of 250 processors 0424 Medium per block of 250 processors 0429 Large per block of 250 processors 0434 5661-SGP After-license 1-year 24 x 7 support Client Small per block of 250 processors 0450 Medium per block of 250 processors 0454 Large per block of 250 processors 0458 Server Small per block of 250 processors 0427 Medium per block of 250 processors 0432 Large per block of 250 processors 0437 5664-SGP 3-year Software Maintenance after-license Client Small per block of 250 processors 0017 Medium per block of 250 processors 0022 Large per block of 250 processors 0027 Server Small per block of 250 processors 0002 Medium per block of 250 processors 0007 Large per block of 250 processors 0012 5664-SGP After-license 3-year 24 x 7 support Client Small per block of 250 processors 0020 Medium per block of 250 processors 0025 Large per block of 250 processors 0030 Server Small per block of 250 processors 0005 Medium per block of 250 processors 0010 Large per block of 250 processors 0015
Note: These features will be removed in eConfig effective July 27, 2010.
System Program Order (SPO): An order for SPO 5692-A5L, 5692-A6P, or 5692-LOP is mandatory for shipments of program distribution. The individual licensed program orders are for registration and billing purposes only. No physical deliveries occur as a result of those orders.
The SPO (5692-A5L for AIX 5, 5692-A6P for AIX 6, or 5692-LOP for Linux on POWER) must contain the following features to deliver a machine-readable copy of the product using the currently available media.
Program Feature number Program/Function name number 5692-A5L GPFS for POWER, V3.4 2281 5692-A6P GPFS for POWER, V3.4 2281 5692-LOP GPFS for POWER, V3.4 2268 5692-LOP GPFS x86 Architecture, V3.4 2269
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| Terms and conditions |
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The information provided in this announcement letter is for reference and convenience purposes only. The terms and conditions that govern any transaction with IBM are contained in the applicable contract documents such as the IBM International Program License Agreement, IBM International Passport Advantage® Agreement, and the IBM Agreement for Acquisition of Software Maintenance.
Licensing
IBM International Program License Agreement including the License Information document and Proof of Entitlement (PoE) govern your use of the program. PoEs are required for all authorized use.
This software license includes Software Subscription and Support (also referred to as Software Maintenance).
Agreement for Acquisition of Software Maintenance
The IBM Agreement for Acquisition of Software Maintenance (Z125-6011) agreement applies for subscription and support (also referred to as Software Maintenance) and does not require customer signatures.
These programs are licensed under the IBM Program License Agreement (IPLA) and the associated Agreement for Acquisition of Software Maintenance, which provide for support with ongoing access to releases and versions of the program. IBM includes one year of Software Subscription and Support with the initial license acquisition of each program acquired. The initial period of Software Subscription and Support can be extended by the purchase of a renewal option, if available. These programs have a one-time license charge for use of the program and an annual renewable charge for the enhanced support that includes telephone assistance (voice support for defects during normal business hours), as well as access to updates, releases, and versions of the program as long as support is in effect.
License Information form number
L-LMUY-84AR4T
The program's License Information will be available for review on the IBM Software License Agreement Web site
Limited warranty applies
Yes
Limited warranty
IBM warrants that when the program is used in the specified operating environment, it will conform to its specifications. The warranty applies only to the unmodified portion of the program. IBM does not warrant uninterrupted or error-free operation of the program or that IBM will correct all program defects. You are responsible for the results obtained from the use of the program.
IBM provides you with access to IBM databases containing information on known program defects, defect corrections, restrictions, and bypasses at no additional charge. For further information, consult the IBM Software Support Handbook found at
IBM will maintain this information for at least one year after the original licensee acquires the program (warranty period).
Money-back guarantee
If for any reason you are dissatisfied with the program and you are the original licensee, you may obtain a refund of the amount you paid for it, if within 30 days of your invoice date you return the program and its PoE to the party from whom you obtained it. If you downloaded the program, you may contact the party from whom you acquired it for instructions on how to obtain the refund.
For clarification, note that for programs acquired under any of IBM's On/Off Capacity on Demand (On/Off CoD) software offerings, this term does not apply since these offerings apply to programs already acquired and in use by you.
Authorization for use on home/portable computer
You may not copy and use this program on another computer without paying additional license fees.
Volume orders (IVO)
Yes. Contact your IBM representative.
Passport Advantage applies
No
Usage restriction
Yes. GPFS has two types of licenses, a Server license and a Client license. For each node in a GPFS cluster (see Permitted use of GPFS Server and GPFS Client below), the customer determines the appropriate number of GPFS Server or GPFS Client licenses that correspond to the way GPFS is used on that node (a node is defined as one operating system instance on a single computer or running in a virtual partition).
During GPFS cluster configuration, the customer is prompted to identify whether a particular node is a GPFS Server or a GPFS Client. If a GPFS Client is chosen, function that requires a GPFS Server license will be disabled on this node. Because the node that acts as the GPFS cluster configuration server requires a GPFS Server designation, at least one node in the GPFS cluster requires a GPFS Server license.
Permitted use of GPFS Server and GPFS Client:
You may use the GPFS Server in order to perform the following GPFS functions:
- Management functions such as cluster configuration manager, quorum node, manager node, and NSD server
- Sharing data through any application, service protocol, or method, such as Network File System (NFS), Common Internet File System (CIFS), File Transfer Protocol (FTP), or Hypertext Transfer Protocol (HTTP)
You may use a GPFS Client license when the nodes are exchanging data between nodes that locally mount the same GPFS file system. The GPFS Client may not be used for nodes to share GPFS data through any application, service, protocol, or method, such as NFS, CIFS, FTP, or HTTP. For this use, entitlement to GPFS Server is required.
Note: Refer to the GPFS FAQs available from the following Web site for
more information, including example configurations and license definitions
regarding the new GPFS Server and GPFS Client model
For additional information, refer to the License Information document that is available on the IBM Software License Agreement Web site
Software Subscription and Support applies
Yes. All distributed software licenses include Software Subscription and Support (also referred to as Software Maintenance) for a period of 12 months from the date of acquisition, providing a streamlined way to acquire IBM software and assure technical support coverage for all licenses. Extending coverage for a total of three years from date of acquisition may be elected.
While your Software Subscription and Support is in effect, IBM provides you assistance for your routine, short duration installation and usage (how-to) questions, and code-related questions. IBM provides assistance via telephone and, if available, electronic access, only to your information systems (IS) technical support personnel during the normal business hours (published prime shift hours) of your IBM support center. (This assistance is not available to your end users.) IBM provides Severity 1 assistance 24 hours a day, every day of the year. For additional details, consult your IBM Software Support Handbook at
Software Subscription and Support does not include assistance for the design and development of applications, your use of programs in other than their specified operating environment, or failures caused by products for which IBM is not responsible under this agreement.
For more information about the Passport Advantage Agreement, visit the Passport Advantage Web site at
IBM Operational Support Services -- SoftwareXcel
No
System i Software Maintenance applies
No
Variable charges apply
No
Educational allowance available
Yes. A 15% education allowance applies to qualified education institution customers.
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| IBM Electronic Services |
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IBM has transformed its delivery of hardware and software support services to help you achieve higher system availability. Electronic Services is a Web-enabled solution that offers an exclusive, no-additional-charge enhancement to the service and support available for IBM servers. These services are designed to provide the opportunity for greater system availability with faster problem resolution and preemptive monitoring. Electronic Services comprises two separate, but complementary, elements: Electronic Services news page and Electronic Services Agent.
The Electronic Services news page is a single Internet entry point that replaces the multiple entry points traditionally used to access IBM Internet services and support. The news page enables you to gain easier access to IBM resources for assistance in resolving technical problems.
The Electronic Service Agent™ is no-additional-charge software that resides on your server. It monitors events and transmits system inventory information to IBM on a periodic, client-defined timetable. The Electronic Service Agent automatically reports hardware problems to IBM. Early knowledge about potential problems enables IBM to deliver proactive service that may result in higher system availability and performance. In addition, information collected through the Service Agent is made available to IBM service support representatives when they help answer your questions or diagnose problems. Installation and use of IBM Electronic Service Agent for problem reporting enables IBM to provide better support and service for your IBM server.
To learn how Electronic Services can work for you, visit
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| Prices |
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For current prices, contact IBM at 888-Shop-IBM (746-7426) or visit
No changes or updates from prior release.
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| Order now |
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To order, contact the Americas Call Centers or your local IBM representative, or your IBM Business Partner.
To identify your local IBM representative or IBM Business Partner, call 800-IBM-4YOU (426-4968).
Phone: 800-IBM-CALL (426-2255)
Fax: 800-2IBM-FAX (242-6329)
For IBM representative: callserv@ca.ibm.com
For IBM Business Partner: pwswna@us.ibm.com
Mail: IBM Teleweb Customer Support
ibm.com® Sales Execution Center, Americas North
3500 Steeles Ave. East, Tower 3/4
Markham, Ontario
Canada
L3R 2Z1
Reference: YE001
The Americas Call Centers, our national direct marketing organization, can add your name to the mailing list for catalogs of IBM products.
Note: Shipments will begin after the planned availability date.
Trademarks
General Parallel File System, GPFS, POWER3 and Electronic Service Agent are trademarks of IBM Corporation in the United States, other countries, or both.
IBM, AIX, Tivoli, Power, ServerProven, System x, BladeCenter, xSeries, System Storage, Passport Advantage and ibm.com are registered trademarks of IBM Corporation in the United States, other countries, or both.
Windows and Microsoft are registered trademarks of Microsoft Corporation in the United States, other countries, or both.
Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both.
Intel and Pentium are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
Other company, product, and service names may be trademarks or service marks of others.
Terms of use
IBM products and services which are announced and available in your country can be ordered under the applicable standard agreements, terms, conditions, and prices in effect at the time. IBM reserves the right to modify or withdraw this announcement at any time without notice. This announcement is provided for your information only. Additional terms of use are located at
For the most current information regarding IBM products, consult your IBM representative or reseller, or visit the IBM worldwide contacts page