Page History

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• New servers: fermi-gpfs01 and fermi-gpfs02
  • Dual-connect storage between these two machines
  • Internet connectivity (2 x 10 Gbps per host?)
  • Install GPFS
  • Install xrootd
  • Balance data across xroot cluster
• New NFS/GPFS service on former fermi-xrd01 and fermi-xrd02 (and wainXXXwain069, wainYYYwain071)
  • fermi-xrd01 and fermi-xrd02 
    • Drain xroot data (~180 TB)
    • Swap 2x R610 with SCS-owned R720 machines
    • Rename (fermi-gpfs03 and fermi-gpfs04?)
    • Internet connectivity (1 x 10 Gbps per host?)
    • Decide upon storage configuration
      • Number of spindles for Users/Groups (from wain025)
      • Number of spindles for production partitions (from wain026 and wain032)
      • Number of "spare" spindles for future expansion
    • Install GPFS (total capacity will be ~160 TB)
    • Migrate wain025, wain026, wain032 to new system
  • Select two wains for CNFS service (lots of memory + fast ethernet)
    • Drain xrootd data from wain069 and wain071 (~60 TB, both are unreliable host due to the Seagate disks)
    • Swap the 4x1Gb interface with 10Gb nic from wain080 and wain081
    • Rename hosts (fermi-cnfs01, fermi-cnfs02?)
    • Install GPFS and CNFS software
    • Configure so that wain025 partitions are handled in such a way that their activities do not negatively impact access to other partitions
• Upgrad NFS service for LSST
  • Repurpose wainZZZ to replace wain006
• Drain xroot from other wains that are to be retired
• Retirement list:
  • wain026
  • wain032
  • wain006
  • wains that are unreliable (due to Seagate drives?)
    • wain053  (29TB to be moved)
    • wain054  (22TB)
    • wain055  (27TB)
    • wain056  (30TB, total = 108TB)
  • Retirement option:  Given that wain05x are the newest and most powerful Sun servers in the cluster, we might consider swapping physical disks from wain017/019/020/021 with wain053/054/055/056, then retiring the older machines. .. Wilko rightfully points out that this option requires more labor.  Is it worth the extra work?

Milestone Timeline

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