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POSIX-compliant cluster le system and volumemanager that executes on Red Hat Enterprise Linuxservers attached to a storage area network (SAN).It works on all major server and storage platformssupported by Red Hat. The leading (and rst) cluster lesystem for Linux, Red Hat GFS has the most completefeature set, widest industry adoption, broadestapplication support, and best price/ performance of anyLinux cluster le system today.

Red Hat GFS allows Red Hat Enterprise Linux serversto simultaneously read and write to a single shared lesystem on the SAN, achieving high performance andreducing the complexity and overhead of managingredundant data copies. Red Hat GFS has no singlepoint of failure, is incrementally scalable from one tohundreds of Red Hat Enterprise Linux servers, and workswith all standard Linux applications.

Red Hat GFS is tightly integrated with Red HatEnterprise Linux and distributed through Red HatNetwork. This simpli es software installation, updates,and management. Applications such as Oracle 9i RAC,and workloads in cluster computing, le, web, and emailserving become easier to manage and achieve higherthroughput and availability with Red Hat GFS.

FEATURES AND BENEFITSPerformance

Red Hat GFS helps Red Hat Enterprise Linux servers achievehigh IO throughput for demanding applications in database,le, and compute serving. Performance can be incrementallyscaled for hundreds of Red Hat Enterprise Linux servers usingRed Hat GFS and storage area networks constructed with iSCSIor Fibre Channel.

Availability Red Hat GFS has no single-point-of-failure: any server, network,or storage component can be made redundant to allowcontinued operations despite failures. In addition, Red HatGFS increases system availability by allowing recon gurationssuch as le system and volume resizing to be made while the

system remains online. Red Hat Cluster Suite can be used withGFS to move applications in the event of server failure or forroutine server maintenance.

ase of Management Red Hat GFS allows fast, scalable, high throughput access to asingle shared le system reducing management complexityby eliminating the need for data copying and maintainingmultiple versions of data to insure fast access. Integratedwith Red Hat Enterprise Linux (AS, ES, and WS) and ClusterSuite, delivered via Red Hat Network, and supported by RedHats award winning support team, Red Hat GFS is the worldsleading cluster le system for Linux.

RED HAT GLOBAL FILE SYSTEM

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EMPOWER YOUR APPLICATIONS WITH RED HAT GFSFor customers with demanding le serving, Web serving,database, and grid/technical/scienti c computing applications,Red Hat GFS enables unprecedented application performanceand scalability. Scaling to hundreds of servers and terabytesof storage, it lets customers utilize cost-e ective, high-performance scale out architectures rather than expensivescale up architectures. GFS solves the scalability limits of raditional IP-based shared storage solutions. It achieves

signi cant cost savings and simpli es data management byeliminating the multiple data copies associated with non-shared storage environments. GFS is the most trusted Linux

le storage platform for large-scale data environmentsrequiring continuous data availability.

DATA SHARING IN SCALE OUT LINUX CLUSTERSScale out Linux clusters are becoming a key component inhe enterprise IT infrastructure. Red Hat Enterprise Linux, GFS,

and Cluster Suite provide an integrated software framework or providing data sharing between the large number of nodesound in scale out clusters. Data sharing improves application

performance and scalability, simpli es data managementusing low-cost Linux hardware and storage area networks,and ensures continuous data availability for mission-criticalapplications. Developed and supported by the open sourcecommunity and Red Hat, GFS is the trusted cluster le systemor large, scale out Linux clusters.

FILE SERVING Traditional IP-based le servers provide a single server per

le system name space, which can become a performancebottleneck when accessing shared data. With Red Hat GFS,

le servers can be clustered to provide shared, parallel accesso a single le system namespace, increasing le serving

performance and scalability, simplifying data management,and insuring continuous data availability.

ORACLE RAC DATABASE CLUSTERINGOracle databases can be clustered using Oracles powerful RealApplication Clusters software, which exploits the performance,availability, and scalability of todays storage area networking(SAN) technology. Red Hat GFS simpli es the installation,con guration, and on-going maintenance of the SANinfrastructure necessary for Oracle RAC clustering. Oracletables, log les, program les, and archive information canall be stored in GFS les, avoiding the complexity anddi culties of managing raw storage devices on a SANwhile achieving excellent performance.

ED HAT APPLICATIONS

Separate le systems. No data sharing.

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Storage Pool

Red Hat GFS

Storage Area Network

ata sharing with Red Hat GFS.

ADVANCED FEATURES Scalable to hundreds of Red Hat

nterpr se nux servers.

Supports Intel X86, Intel Itanium2, AMDAMD64, and Intel EM64T architectures

Works with Red Hat Cluster Suite toprovide high availability for mission-critical applications.

Quota system for cluster-wide storagecapacity management.

Direct IO support allows databasesto achieve high performance withouttraditional le system overheads.

Dynamic multi-pathing to route aroundswitch or HBA failures in the storage areanetwork.

Dynamic capacity growth while the lesystem remains on-line and available.

Can serve as a scalable alternativeto NFS.

PRODUCT INFORMATION Supported on Red Hat Enterprise LinuxAS, ES, and WS. Red Hat Cluster Suitesupport available on Red Hat EnterpriseLinux v.3.

Support for a wide variety of FibreChannel and iSCSI storage area network products from leading switch, HBA, andstorage array vendors.

Mature, industry-leading, eld-proven,open source cluster le system.

GRID AND HIGH PERFORMANCECOMPUTINGGrid and high performance computingis a leading application area for Linuxclusters. Red Hat GFS can be used toshare data among Red Hat EnterpriseLinux servers, improving applicationperformance for IO- and storage-intensive application software byimproving raw le transfer speeds,removing unnecessary data copying,and ensuring continuous data availability.Red Hat GFS combined with storagearea networking technology can solvethe large data and IO requirements of the largest grid computing clusters inproduction today.

EMAIL SERVINGRed Hat GFS can provide scalableperformance and continuous dataavailability for large email serverinstallations. Email is both mission-critical and performance-intensive.Data sharing clusters constructed withRed Hat Enterprise, GFS, and ClusterSuite can help provide the scalability,performance, and data availabilityrequired by demanding email serverenvironments today.

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TRAININGRed Hat o ers the industrys most highly respectedLinux training and certi cation programs, coveringcore and advanced skills in administering Red Hat

Enterprise Linux for deployment. Three levels of certi cation are available: Red Hat Certi ed Technician (RHCT), Red Hat Certi ed Engineer(RHCE), and Red Hat Certi ed Architect (RHCA).RH436 Red Hat Enterprise Storage Management,an advanced course in the RHCA curriculum,provides intensive hands-on experience with theemerging shared storage technology delivered byRed Hat GFS.RED HAT SALES AND GENERAL INQUIRIES

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