The following capabilities are provided in Release 3:

• In order to detect and quickly recover from a massive hardware
  failure, GPFS provides a number of features that facilitate the
  implementation of highly available GPFS environments capable of
  withstanding catastrophic hardware failures. By maintaining a redundant
  replica of the file system's data at a geographically separate location,
  the system sustains its processing using the secondary replica of the
  file system in the event of a total failure in the prime environment.
  

• The multiple GPFS cluster types that existed in prior releases of
  GPFS have now been converged into a single cluster type for all supported
  environments. This convergence helps ease cluster interoperability
  across differing operating system and machine architecture environments
  and lessens the planning complications and implementation restrictions
  inherent in the prior cluster types. The dependency on RSCT and the
  requirement for quorum nodes to belong to an RSCT peer domain have been
  removed.
  

• For customers who want to use the latest NFS to access their GPFS
  filesystems, NFS V4 provides support for strong security, compound
  operations, and client caching. NFS V4, available in AIX 5L V5.3, adds
  support for core features of the NFS V4 protocol and support of the NFS
  V4 ACL model. GPFS supports the same NFS V4 ACL model and coordinates
  with AIX caching operations.
  

• GPFS V2.3 introduces a new file system format that lifts some of the
  restrictions present in older releases. This new format is in effect for
  new file systems created with GPFS V2.3. The maximum disk size is no
  longer 1 TB. On AIX 5L with 64-bit kernel, GPFS will support disks
  larger than 2 TB (provided the disk device supports it), up to the
  operating system limit. On Linux platforms, GPFS will support disks up
  to 2 TB in size. The maximum number of files in a file system has
  increased from 268,435,455 to 2,147,483,647.
  

• I/O performance allows the system administrator to collect I/O
  statistics from the point of view of GPFS servicing application I/O
  requests. The data can be used for many purposes, including tracking
  usage growth, recording I/O patterns over time, and determining if some
  nodes service more I/O requests than others.
  

• The ability to share GPFS file system data across clusters allows
  GPFS file systems to be separated into different administrative domains
  while allowing data to be shared across a large number of nodes without
  the encumbrance of a large single cluster. The GPFS cross cluster mounts
  allow high speed GPFS file system data access across organizations or
  geographically separate locations where creating a single cluster would
  be impractical. Overall, data availability can be increased as quorum
  loss in one cluster does not affect the availability of file systems in
  other clusters. GPFS multi-cluster security uses the Secure Socket
  Layer. Note: This function is available in the code and can be used for
  preparation and planning but is not supported for production use until
  GPFS service (APAR #IY64709) is made available.
  

• The transition from single-node quorum to node quorum with tie
  breaker disks eliminates the dependence on disk subsystem capability
  (SCSI persistent reserve support) to deliver single node survivability in
  a two node cluster. Node quorum with tie breaker disks is uniform and is
  supported regardless of disk subsystem and operating system type.
  

---

97,198c291,293

---

alt="Back to top"/>Back to top

---

01c296,297

cellpadding="0" summary="layout"> 04c300,301 summary="layout"> 06c303,304 alt="TOC Link"/> 09c307,308 alt="TOC Link"/> 12c311,312 alt="TOC Link"/> 30,269c330 GPFS for AIX 5L is supported on IBM eServer pSeries servers (V2.1/V2.2) and IBM eServer p5 models (V2.2.1) Supported disks include: IBM TotalStorage* FAStT500, T600, T600 Turbo, T700, T900, SSA (all sizes), ESS 2105 (F20 or 800), IBM SAN Volume Controller. In a Cluster Environment: An existing system cluster from which to define a GPFS cluster Up to 1,024 external shared disks or disk arrays (including Serial Storage Architecture, IBM Enterprise Storage Server, and IBM Total Storage FAStT500) with the correct adapters An IP network of sufficient bandwidth (minimum of 100 Mb per second) for GPFS daemon communications (token management, etc.) In an SP Environment: RS/6000 SP Enough disks to contain the file system (up to 1,024 logical devices) Additional hardware is required to operate in a switch environment: SP Switch or SP Switch2 pSeries High Performance Switch (HPS) (V2.2.1 running AIX 5.2) SP Switch MX, MX2, or PCI-X adapter to exploit Low-Level Application Programming Interface (LAPI) as the communication protocol Additional hardware is required to operate in a direct-attached disk environment: Up to 1,024 external shared disks or disk arrays (including Serial Storage Architecture, IBM Enterprise Storage Server, and IBM Total Storage FAStT500) with the correct adapters An IP network of sufficient bandwidth (minimum of 100 Mb per second) for GPFS daemon communications Note: Refer to the following GPFS FAQ for the latest information on supported disks: http://www-1.ibm.com/servers/eserver/pseries/software/sp/gpfs.html Any of the following IBM servers: 71,273c332,339 The supported file system size is up to 100 terabytes (TB) The supported scaling limit is 128 nodes. IBM eServer pSeries servers IBM eServer Cluster 1600 (with supported network interconnect) IBM eServer p5 servers (520, 550, 570, 590, 595) IBM eServer BladeCenter JS20 Additionally, the IBM eServer pSeries High Performance Switch (HPS) and SP Switch2 is supported when run with Parallel System Support Programs (PSSP) and AIX 5L V5.2 only. 75a342,359 For GPFS V2.3: GPFS Service APAR #IY63969 AIX 5L for POWER, V5.2 (5765-E62) maintenance level 5200-03, or later maintenance level or AIX 5L for POWER, V5.3 (5765-G03) maintenance level 5300-01, or later maintenance level. The Parallel Backup application requires Tivoli Storage Manager (TSM) V4.2, or later release. For SANergy access support, Tivoli SANergy V2.2.4 plus Patch level 3.2.2.0, is required. In a PSSP environment, PSSP V3.5 (5765-D51) is supported with the IBM Virtual Shared Disk and Recoverable Virtual Shared Disk components of PSSP. For GPFS V2.2: 01,302c385,387 alt="Back to top"/>Back to top 05c390,391 cellpadding="0" summary="layout"> 11,318c397,399 GPFS supports interoperability between 32-bit and 64-bit GPFS kernel extensions within a nodeset. To use 64-bit versions of the GPFS program interfaces created in an AIX 4.3 environment, you must recompile your code for use in an AIX 5L environment. All other applications that executed on the previous release of GPFS will execute on this new level of GPFS. With the streamlining of cluster type designations, GPFS V2.3 introduces changes in the format of its cluster configuration files that require existing clusters to be migrated to the new level. 46,347c427,436 Support for GPFS V2.3 on the IBM eServer p5 models 590 and 595 is not provided at general availability. The ordering tables (configurator) will be updated when testing is completed and GPFS supports the model 590 and model 595. GPFS multi-cluster support is available in the V2.3 code and can be used for preparation and planning but is not supported for production use until GPFS service APAR (#IY64709) is made available. alt="Back to top"/>Back to top 50c439,440 cellpadding="0" summary="layout"> 53,356c443,444 No hard copy publications are shipped with this program. The following publications are available on the Web only: In an AIX cluster environment, the GPFS library consists of: The following publications are available exclusively from the Web: IBM General Parallel File System: 58,380c446,462 IBM General Parallel File System for AIX 5L: AIX Clusters Concepts, Planning, and Installation Guide (GA22-7895) IBM General Parallel File System for AIX 5L: AIX Clusters Administration and Programming Reference (SA22-7896) IBM General Parallel File System for AIX 5L: AIX Clusters Data Management API Guide (GA22-7898) IBM General Parallel File System for AIX 5L: AIX Clusters Problem Determination Guide (GA22-7897) In a PSSP cluster environment, the GPFS library consists of: IBM General Parallel File System for AIX 5L: PSSP Clusters Concepts, Planning, and Installation Guide (GA22-7899) IBM General Parallel File System for AIX 5L: PSSP Clusters Administration and Programming Reference (SA22-7900) IBM General Parallel File System for AIX 5L: PSSP Clusters Data Management API Guide (GA22-7902) IBM General Parallel File System for AIX 5L: PSSP Clusters Problem Determination Guide (GA22-7901) Concepts, Planning and Installation Guide (GA22-7968) Administration and Programming Reference (SA22-7967) Problem Determination Guide (GA22-7969) Data Management API Guide (GA22-7966) These displayable manuals are viewable in PDF format from: http://www.ibm.com/servers/eserver/clusters/software/gpfs.html The manuals are also available from the 'Library' link off of the IBM eServer Cluster Information Center at: http://publib.boulder.ibm.com/infocenter/clresctr/index.jsp alt="Back to top"/>Back to top 83c465,466 cellpadding="0" summary="layout"> 99a483,485 alt="Back to top"/>Back to top 01a488,532    E-mail this page    About IBM   |   Privacy   |   Terms of use   |   Contact