Archival Storage At LANL Past, Present and Future - Los Alamos ...

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HPSS experience at LANL • Deployed in 1997. • Scalability excellent. Has scaled from 3-5 TB growth per month in 1998 to over 300 TB month in 2006. Factor of 100. HPSS ingests in one week what was stored in CFS in 20 years. • Total storage in secure is at 5.5 PB and app. 55 million files. • Single file transfer rates have scaled from a max of 60MB/sec in 1998 to 160MB/sec in 2006. With new Titanium drives should reach 600MB/sec. + in 2006. Rates are based on 4 way tape stripes. Larger stripes would give higher rates. • Currently, aggregate throughput limited by network. New 10GigE switches will relieve this. Prior testing has demonstrated capability to scale to network bandwidth.
HPSS experience at LANL • Very reliable, robust. Replacement of SFS with DB2 in HPSS 5.1 in 2004 has enhanced this. • HPSS 6.2 (available now) will eliminate DCE. Puts HPSS in a strong position to go forward into the future. • SFS database created problems on 3 occasions. Caused some downtime and a loss of a small number of files(100 or so) on one occasion. Since replaced with DB2 in release HPSS 5.1 in 2004. • Microcode failure in one STK 9940B drive corrupted a small number of files.
Page 1 and 2: Archival Storage At LANL Past, Pres
Page 3 and 4: HSM: Hierarchical storage managemen
Page 5 and 6: Tape is much less expensive • In
Page 7 and 8: • LANL has been involved in archi
Page 9 and 10: Common File System • HSM based on
Page 11 and 12: High Performance Storage System •
Page 13: High Performance Storage System •
Page 17 and 18: HPSS Future at LANL • Complete PS
Page 19 and 20: • Clients select Core Servers bas
Page 21 and 22: Future challenges for archival •
Page 23 and 24: Future challenges for archival •

Archival Storage At LANL Past, Present and Future - Los Alamos ...

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