Dr. Wolfgang Mertz Business Development Manager for Storage in EMEA wmertz@sgi.com
Data Growth Trends
2 Buzzwords in IT Industry Server Consolidation - maybe in a commercial environment
- usually not in a technical environment
- a hammer is a hammer, a screwdriver is a screwdriver
- an HPC system cannot be used as a HPV system
Storage Consolidation
pro con - distributed, expensive administration
- data may not be where it is needed
- multiple copies of data stored
History of Storage Architectures NAS - Network Attached Storage pro con - network performance is the bottleneck
History of Storage Architectures SAN - Storage Area Network pro con - NO FILE SHARING
- multiple copies of data stored
How does that translate to a GRID Environment? Storage Consolidation - useful in a local environment (GRID node)
- does not work between remote GRID nodes
Current Data Access between GRID Nodes - Data has to be copied before/after the execution of a job
- Problems
- copy process has to be done manually or included in the job script
- copy can take long
- multiple copies of data
- additional disk space needed
- revision problem
What if... ... a SAN would have the same file sharing capability as a NAS? ... one could build a SAN between different buildings/sites/cities and not loose performance?
Storage Area Networks (SAN) The High Performance Solution
SGI InfiniteStorage Shared FileSystem (CXFS)
Fibre Channel over SONET/SDH The High Efficiency, Long Distance Alternative
LightSand Solution for building a Global-SAN
LightSand Products S-600 - 2 ports FC and/or IP 1Gb/s
- Point-to-point SAN interconnect over SONET/SDH OC-12c (622 Mb/s bandwidth)
- Low latency (approximately 50 µSec)
S-2500 - 3 ports FC and/or IP 1Gb/s
- Point-to-point SAN interconnect over SONET/SDH OC-48c (2.5 Gb/s bandwidth)
- Point-to-multipoint SAN interconnect over SONET/SDH (up to 5 SAN islands. 622 Mb/s per link)
- Low latency (approximately 50 µSec)
Data Movement Today – A Recent Case Study Scientists at LANL currently dump 100GB of supercomputing data to tape and FedEx it to SNL because it is faster than trying to use the existing 155Mb/s IP WAN connection - Actual measured throughput of 16Mb/s! (10% bandwidth utilization)
- http://www-unix.mcs.anl.gov/discovery/wufeng.htm
Using LightSand gateways, the same data could be transferred in a few minutes!
What does that mean for a GRID Environment? Full Bandwidth Data Access across the GRID No Multiple Copies of Data - avoid the revision problem
- do not waste disk space
Highly Integrated, Massively Scalable Systems
SGI InfiniteStorage Product Line
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