HPSS for GPFS
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HPSS:
The High Performance Storage System (HPSS) is IBM's highly scalable Hierarchical Storage Management (HSM) System. HPSS is intended to be used by IBM's high-end HPC customers, with storage requirements in the tens of millions, hundreds of millions, and even the billion file range. HPSS is capable of concurrently accessing hundreds of tapes for extremely high aggregate data transfer rates, and can easily meet otherwise unachievable total storage bandwidth and capacity requirements. HPSS can stripe files across multiple tapes, which ensures high bandwidth data transfers of huge files. HPSS provides for stewardship and access of many petabytes of data stored on robotic tape libraries.
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GPFS:
The IBM General Parallel File System (GPFS) is a true distributed, clustered file system. Multiple servers are used to manage the data and metadata of a single file system. Individual files are broken into multiple blocks and striped across multiple disks, and multiple servers, which eliminates bottlenecks. Information Lifecycle Management (ILM) policy scans are also distributed across multiple servers, which allows GPFS to quickly scan the entire file system, identifying files that match a specific criteria. Shortly after we showed the Billion File Demo at the international conference on high performance computing (SC07), the Almaden Research Center showed that a pre-GA version of GPFS is capable of scanning a single GPFS file system, containing a billion files, in less than 15 minutes!
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GPFS/HPSS Interface (GHI):
HPSS can now be used to automatically HSM manage GPFS disk resources. GPFS customers can now store petabytes of data on a file system with terabytes of high performance disks. HPSS can also be used to capture a point-in-time backup of your GPFS cluster and file systems. In the event of a catastrophic failure, HPSS can be used to restore your GPFS cluster and file systems. The GPFS high performance ILM policy scans are used to:
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GPFS + HPSS:
The ILM policy scan results are sent to the Scheduler. The Scheduler distributes the work to the I/O Managers (IOM), and the GPFS data are copied to HPSS in parallel. For those files that are no longer active, holes are then punched into GPFS files to free up GPFS disk resources. The continuous movement of GPFS files to HPSS tape, and the freeing of GPFS disk resources is an automated process that is transparent to the GPFS user. If the GPFS user should access a file that is only on HPSS tape, the file will automatically stage back to GPFS, so the user can access the file.
The GPFS/HPSS Interface continuously copies GPFS file data to HPSS. When the time comes to perform a backup, only those files that have not yet been copied to HPSS tape are migrated. Therefore, it is NOT necessary to recapture all of the file data at each backup. |
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Small File Aggregation:
Most GPFS file systems are made up of small files about 90% of the files use 10% of the disk resources. Traditionally, copying small files to tape diminishes your tape drive performance. The GPFS/HPSS Interface copies small files from GPFS to HPSS by grouping many small files into much larger aggregates. Small file aggregation is completely configurable, but 10,000 GPFS files were placed into each HPSS aggregate at the SC07 Billion File Demo. Large aggregates allow data to stream to the tape drive, which yields higher tape transfer rates.
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That's why we say...
GPFS + HPSS = Extreme Storage Scalability!
What's New?
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2012 HPSS Users Forum - The 2012 HPSS Users Forum (HUF) will be hosted by CEA and held at the Hotel Pullman (Paris Bercy) in Paris, France. The conference will run October 15th through noon on October 18th. The conference website is now available http://www-hpc.cea.fr/en/HUF2012/index.htm for users to register, view the draft agenda, and obtain other related information about the meeting. The length of the conference is the same as last year - 3 1/2 days, with time available in the evening to visit/tour Paris.
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| Purdue University: Data Storage Archive- Information Technology at Purdue will be upgrading the Fortress archive system from EMC's DiskXtender (DXUL) to IBM's High Performance Storage System (HPSS). In addition to the new archive data, HPSS will manage and retrieve the legacy data on DXUL tapes. For more details, please visit http://www.rcac.purdue.edu/news/detail.cfm?NewsID=475 |
| Library of Congress: Data Storage Archive - The Library of Congress has acquired HPSS for use in the National Audiovisual Conservation Center. The NAVCC is located in Washington, DC and at the Packard Campus for Audio-Visual Conservation, located in Virginia. |