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Workshop and Q&A Fall 2013

  • Tails! We have …
    • greentail (HP) primary login node and scheduler (do not run long running programs on it)
      • current file server, to be backup file server
    • swallowtail (Dell) secondary login node and scheduler (do not run long running programs on it)
      • does some backup
    • petaltail (Dell) a dev/test box (go ahead, crash&burn programs …)
      • does some backup
    • sharptail (Microway) no logins
      • to become file server
    • whitetail
      • access to Hadoop
  • New file server!
    • sharptail will take over serving /home from greentail
    • greentail will become a backup server (but remain as primary login head node)
    • disk-to-disk backups from array to array will safe guard data
    • greentail will server /sanscratch to all nodes but sharptail will serve /sanscratch to n33-n37
      • 10 TB in total for scratch, use it
  • Downtime!
    • one day, between fall and christmas break
    • switch file servers, remount /home
    • some other maintenance activities
    • queues need to idle
    • final sync of data from greentail to sharptail
  • What's Coming!
    • Perhaps replacement hardware for the Dell cluster
    • More powerful servers, much greener, perhaps fewer job slots
    • A physical plant/ITS venture …


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cluster/122.txt · Last modified: 2013/10/01 18:30 by hmeij