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Topic: SAN file system

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In the News (Thu 25 Apr 19)

  IBM Storage Tank— A heterogeneous scalable SAN file system
Fourth, it is not possible to move an application from a computer running one file system to another computer running a different file system without also reading all of the data of the application, modifying the data to the format of the second file system, and writing all the data back to disk.
File meta-data, such as directory entries, and file attributes, such as last modification time, are presented to users and applications in a form that is compatible with the native file system interface of the platform.
Although cluster file systems can probably be made to support heterogeneous server environments, it is much harder for them than it is for ST because the code to implement a cluster file system is larger and more complex than the code to implement an ST client.
www.research.ibm.com /journal/sj/422/menon.html   (10131 words)

 EnterpriseStorageForum: SANs/NAS News
Crafting a SAN that shares an almost limitless amount of files irrespective of their make-up has been a challenge for storage vendors — until now, according to IBM.
Hillsberg also said one of the reasons why a product like SAN File System is important is that many enterprises organize data in different ways and attach different significance to their data.
The new IBM file system automatically sets policies and shuttles data to the appropriate server pools based on their degree of importance.
www.enterprisestorageforum.com /sans/news/print.php/3091131   (718 words)

 IBM Storage Tank—a heterogeneous scalable SAN file system IBM Systems Journal - Find Articles
ST goes beyond cluster file systems, such as the IBM General Parallel File System (GPFS), (1) that allow a cluster of homogenous (single operating system) computers to share data by allowing thousands of heterogeneous computers, some subset of which may be clustered, to share data.
SANs solve many problems for customers and simplify storage management, but their full potential remains untapped without a scalable, multiplatform, SAN file system such as ST.
SANs enable the direct connection of large numbers of computers to large numbers of storage devices that range from simple disks to large, high-performance, high-function storage systems.
www.findarticles.com /p/articles/mi_m0ISJ/is_2_42/ai_104610360   (962 words)

 InfoStor - File systems deliver on the promise of SANs
Today's SAN file systems support a wide range of operating systems, which allows data in a single SAN pool to be shared among multiple operating systems.
SAN file systems, on the other hand, allow heterogeneous servers to access each other's data and to use the same storage devices without allocation restrictions.
SAN file systems have the potential to create opportunities to add data management features that can enhance the way that IT administrators use their storage resources.
www.infostor.com /Articles/Article_Display.cfm?Article_ID=173277   (1380 words)

 IBM unveils storage management system | Tech News on ZDNet
SAN refers to storage area networks, which connect storage devices and are often used by larger companies to hold data.
SAN File System works by tying together servers in multiple locations over an Internet Protocol network and then allowing the distributed storage network to look and behave like a local file system, no matter where or on what operating system the data resides, according to IBM.
SAN File System allows an organization to minimize copying, he suggested, by letting multiple servers access the same data.
news.zdnet.com /2100-3513_22-5089945.html   (1070 words)

 IBM SAN File System: Overview - IBM TotalStorage Open Software Family
SAN File System is designed to simplify file and data management in your storage area network by consolidating file systems across UNIX®, Windows®, and Linux® servers.
SAN File System is designed to help you to achieve data lifecycle management efficiencies through policy-driven automation and tiered storage management.
SAN File System is also designed as a highly scalable solution supporting both very large files and very large numbers of files without the limitations normally associated with Network File System (NFS) or Common Internet File System (CIFS) implementations.
www-03.ibm.com /servers/storage/software/virtualization/sfs/index.html   (356 words)

 College of Business -- Computer Support -- File Storage
Thus, faculty stored files on one server; student files were on other servers; and websites were on yet other servers.
To provide better and more consistent service, the college recently purchased a file server cluster known as a SAN file system; that is, a storage area network file system.
Files are backed up regularly in two ways: daily incremental back-up to disk and weekly full back-up to tape.
faculty.bus.oregonstate.edu /sullivan/it-support/file-storage.htm   (877 words)

 SAN File Systems: Failure or Future?   (Site not responding. Last check: 2007-10-24)
SAN file systems are used mostly in applications where extremely large files are being shared and high data throughput (in the range of hundreds of megabytes per second) is needed.
SAN file system technology is already relatively expensive, however, and use of Fibre Channel will up the ante by requiring expensive switches, host bus adapters and management software.
SAN file systems will also be a logical fit for emerging object-based storage technologies, where applications are able to indicate to storage devices their performance and data-retention needs.
www.eweek.com /article2/0,1895,1813965,00.asp   (1025 words)

 DataPlow SAN File System Software Beat IBM/Tivoli Sanergy, Global Filesystem, GFS, CentraVision, CVFS, CXFS, QFS
SANs are dedicated, high-speed networks that directly connect multiple computers to central pools of disk storage.
Unlike shared file systems that require the purchase of proprietary hardware, DataPlow SFS is compatible with storage devices and network components that are currently available from a variety of vendors.
This SAN file system study, Functionality and Performance Evaluation of File Systems for Storage Area Networks (SAN) by Martha Bancroft, Nick Bear, Robert Hill, Richard Isicoff, and Hoot Thompson, is published in the proceedings of the Eighth NASA Goddard Conference on Mass Storage Systems and Technologies.
www.dataplow.com /sfs_main.htm   (755 words)

 IBM updates SAN File System software | InfoWorld | News | 2004-05-25 | By Robert McMillan, IDG News Service
SAN file systems are useful for companies looking to provide a number of different servers with identical views of data on the network, said Arun Taneja, founder of storage industry research firm Taneja Group.
The Ohio Supercomputer Center has been working since mid-January on implementing the SAN File System on 520T bytes of storage it is using for a variety of high-performance computing tasks.
Though the center is using the SAN File System exclusively on IBM FAStT900 and FAStT600 storage servers right now, version 2.1 might change that, she said.
www.infoworld.com /article/04/05/25/HNsanfilesystem_1.html   (1165 words)

 NCSA Mercury File Systems
File system and node connectivity are shown above.
All compute, login and GridFTP nodes are served by the GPFS (NSD) servers and the NSF file system.
This file system is much larger and faster than the cluster-wide GPFS-NSD.
www.ncsa.uiuc.edu /UserInfo/Data/filesystems/Hg-fs.html   (334 words)

 CIOL : Databases : Data Storage in SANs
A SAN file system is completely different from ordinary file systems in the way it stores and retrieves files, this tutorial shows how it works.
In an ordinary file system, files are organized in directories and sub-directories to form a tree-like structure.
The system pool is a combination of the system and file metadata.
www.ciol.com /content/search/showarticle1.asp?artid=61871   (559 words)

 SAN file system - Wikipedia, the free encyclopedia
In enterprise storage, a SAN file system is a file system which has been optimized to be shared by multiple clustered servers over a storage area network.
SAN file systems are like network attached storage (NAS) protocols (like SMB and NFS) in that they allow multiple computers to access the same file system (and even file) at the same time.
Examples of File Systems include the Global File System, the SAN File System, and Oracle Cluster File System.
en.wikipedia.org /wiki/SAN_file_system   (185 words)

 Apple's SAN file system turns heads
SAN file systems are a great idea, if you can afford one.
They enable multiple users simultaneous access to the same file, but the price tag for this functionality, which includes sophisticated stuff like multi-platform data sharing, policy-based provisioning and file-level locking, is outrageously steep.
The file system holds 16 TB of data and up to 64 clients can read and write to shared storage at the same time.
searchstorage.techtarget.com /originalContent/0,289142,sid5_gci996860,00.html   (1153 words)

 IBM Redbooks | IBM TotalStorage SAN File System   (Site not responding. Last check: 2007-10-24)
SAN File System is a robust, scalable, and secure network-based file system designed to provide near-local file system performance, file aggregation, and data sharing services in an open environment.
SAN File System helps lower the cost of storage management and enhance productivity by providing centralized management, higher storage utilization, and shared access by clients to large amounts of storage.
We describe the design and features of SAN File System, as well as how to plan for, install, configure, administer, and protect it.
www.redbooks.ibm.com /abstracts/sg247057.html?Open   (545 words)

 IBM unveils SAN File System
He said that SANs provide physical connectivity but not logical connectivity, which is a problem that needed to be solved at the file system level.
Instead of installing a file system on each individual server connected to the SAN, SAN FS resides on a metadata server that runs out of band, meaning that data traveling among servers and storage does not travel through them.
"[The SAN File System] provides a single file system interface that is easy to manage and install [applications] on, but allows administrators to select which files and directories are protected by remote copy," he said.
searchstorage.techtarget.com /originalContent/0,289142,sid5_gci931907,00.html?track=NL-52&ad=488113   (1850 words)

 File System helps manage SAN-based storage, IBM Corporate Headquarters
The IBM TotalStorage SAN File System solution is designed to help reduce both the complexity and cost of managing your SAN-based storage.
The IBM TotalStorageĀ® SAN File System is a member of the IBM TotalStorage Virtualization Family of solutions.
The SAN File System Metadata Server engines are based on IBM xSeriesĀ® 345 servers with hardware added for increased redundancy.
news.thomasnet.com /fullstory/27210/387   (1106 words)

 DataPlow SAN File System Software Partners: Brocade, QLogic, Sun, Adaptec, Redhat, SuSE, IBM
SANs optimize capital investments by providing a highly available and easily managed platform for storage applications.
From systems to software to global product support, Eurologic has for over a decade set the standard for storage technology, arriving early-to-market with state-of-the-art network storage technology optimized to meet the unique and demanding requirements of a wide range of storage-centric markets.
With a vision of a SAN in every business, QLogic produces the controller chips, host bus adapters, fabric switches, and management software that are the backbone of storage networks for most Global 2000 corporations.
www.dataplow.com /partnerships.htm   (833 words)

 [No title]
Network-attached Storage (NAS) A specialized servers with optimized file systems and thin OS that are tuned for the requirement of file serving.
SAN File Systems An architecture for distributed file systems based on shared storage.
CXFS locking is performed on inodes (File System), in either shared or exclusive mode.
web.cs.wpi.edu /~cs535/f00/wang-cai.ppt   (498 words)

 Data Storage Solutions – Backup Data Storage and Remote Solutions at Datamation
Enterprise Storage Group Analyst Steve Kenniston finds promise in SAN File System, noting that there are many, many applications that could benefit from this type of technology, and that, when paired with IBM's SAN Volume System and Controller, could yield some solid virtualization capabilities.
In the meantime, Kenniston feels the more appropriate competitive comparison with SAN File System might be between IBM and VERITAS, which he says is the leading file system across all platforms.
Accordingly, Gready said, OS vendors consider the file system to be their domain.
itmanagement.earthweb.com /datbus/print.php/11068_3099081_2   (715 words)

 InfraStor TechNote: Clustered File Systems
In other applications, clustered file systems are useful for web-server farms, and enabling SAN-based, LAN-free HSM installations.
Charismac's Fibre-Share is not a true clustered or global file system but allows shared access to volumes rather than individual files.
InfraStor Technologies is a Systems Design and Integration firm specializing in the implementation of networked storage infrastructures, including both hardware and software.
www.infrastor.com /technotes/clusteredfilesystems.htm   (533 words)

 IBM gives SAN File System a second try | The Register
Storage fiends will recall that IBM had for many moons billed SAN File System as the answer to multivendor storage management, only to disappoint world+dog by releasing an IBM-only version of the product last year.
Overall, the premise of SAN File System is impressive.
In total, the SAN File System, conceptually, stretches across every server in a network, providing a common software layer for administrators to work with.
www.theregister.co.uk /2004/05/25/ibm_san_two   (793 words)

 DBAsupport.com Forums - SAN/ Oracle file system
05-03-2002 04:54 PM If you are using a clustered file system (two hosts mounting the same volumes on the SAN) then you can run multiple databases, on different hosts, from one set of binaries.
If you are not using clustered file system then you will need to install the binaries on each host.
Currently, our system is configured as Active/Passive so this means at one time only one node can access the database.
www.dbasupport.com /forums/printthread.php?t=24407   (559 words)

 IBM's Storage Tank Looks to Shell Rivals
Crafting a SAN that shares an almost limitless amount of files irrespective of their make-up has been a challenge for storage vendors -- until now, according to IBM.
Bruce Hillsberg, director of storage software strategy and technology at IBM, said the point of the SAN File System is to help companies with large data warehousing needs and customers deploying grid computing environments become more competitive by providing an easier way for administrators to manage the massive amounts of data that is stored.
The traditional thorn in the side of administrators is that each file system is managed separately, making it difficult to set consistent user policies, or instructions on how the files can be accessed.
www.internetnews.com /storage/article.php/3090791   (1084 words)

 Apple - Xsan
Dozens of systems on the SAN can read and write to shared storage simultaneously, unlike other solutions which gate access at the volume level.
Using Fibre Channel multipathing, in which two Fibre Channel cables connect a computer to the SAN, an Xsan client can theoretically achieve throughput of up to 400MBps, perfect for multiple editors working on a video project or a compute cluster that needs fast access to data to ensure each node crunches at full capacity.
You may also use Xsan in a cross-platform environment alongside Windows-, UNIX- and Linux-based systems, using the ADIC StorNext File System, which is 100% interoperable with Xsan.
www.apple.com /xsan   (1139 words)

 SGI Expands Capability of SAN File System
This improvement is designed to increase the scalability of SGI storage solutions and increase productivity by eliminating file duplication and the time necessary to move large files over the network.
This allows systems in the same environment to simultaneously access the same file at local or near-local disk speeds.
CXFS improves data workflow by providing customers the performance and scalability of a SAN with the file sharing and connectivity of network-attached storage, addressing two fundamental challenges in data management: fast access to information and seamless integration of multiple operating systems.
www.serverwatch.com /news/article.php/1501021   (565 words)

 Ohio Supercomputer Center Selects IBM For Massive Storage System
The SAN File System and SAN Volume Controller are part of the IBM TotalStorage Virtualization Software Family which provides one of the industry’s broadest set of virtualization solutions, designed to help lower storage infrastructure related costs and reduce application downtime.
SAN File System will help OSC to share that data with Ohio researchers and help OSC manage the data easily and cost-effectively across a wide array of IBM storage hardware, including FAStT 900 storage servers and FAStT 600 storage servers with turbo option.
Based on the Storage Tank technology developed by IBM Research, the IBM TotalStorage SAN File System is designed to provide a single, centralized point of control to manage files and databases, which can help simplify administration and result in lower total costs.
www.osc.edu /press/releases/2004/storage.shtml   (675 words)

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