Lower Storage projects Alexander Moibenko 02/19/2003

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Lower Storage projectsAlexander
Moibenko02/19/2003
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Enstore

• Fermilab Mass Storage System
• General Mass Storage
• D0 Mass Storage
• CDF Mass Storage

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Hardware

• 3 STK Robotic Storage Libraries
• 1 AML-2 Robotic Storage Librarie
• 27 9940A Tape Drives
• 12 9940B Tape Drives
• 9 IBM LTO Tape Drives
• 6 9840 Tape drives
• 4 Mammoth-2 tape drives

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Developers

• Eileen Berman
• Chih-Hao Huang
• Alexander Moibenko
• Michael Zalokar

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Hardware (cont-d)

• 53 mover nodes
• 18 server nodes

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Software components

• Linux OS for servers and movers
• Pyhton as main language
• C where needed performance
• ftt as low level tape tool
• libdb as internal DB
• postgres as accounting DB
• apache web server

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Software (cont-d)

• Freeware plot tools
• Freeware Imaging tools
• Custom system monitoring
• Custom system installation / upgrade tools
• No licensed products.
• Client code for Linux, IRIX, SunOS, OSF1

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Enstore Structure (addl. Comp)

• Inquisitor
• alarm server
• event relay
• accounting server

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Project Status

• All components in production. Need feature
  additions, bug fixes.
• Movers run with the rate of tape drive
• More than 600 TB of data stored
• More than 8 TB/day average transfer
• Major development accounting module, enstore
  data presentation, migration of tape drive
  statistics off central DB
• New storage resources