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Storage review

3D Workshop, Barcelona (ES), 20-21 April 2009. Storage review. Carmine Cioffi Database Administrator and Developer. Outline. Storage spec and configuration Performance Future plans. Storage spec and configuration. Two disk arrays used by both databases (OGMA, LUGH):

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Storage review

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  1. 3D Workshop, Barcelona (ES), 20-21 April 2009 Storage review Carmine Cioffi Database Administrator and Developer

  2. Outline • Storage spec and configuration • Performance • Future plans

  3. Storage spec and configuration • Two disk arrays used by both databases (OGMA, LUGH): • Storage: 2 SAN, 2GBps FC • Single switch SANBOX 5200 2Gb/s • Physical disks available: • Array 1: 16 disks SATA 260GB • Array 2: 6 disks SATA 550GB • Arrays configured with RAID10

  4. Storage spec and configuration OGMA LUGH FC switch SANBOX 5200 2Gb/s Disk array 1 Disk array 2 OGMA (407 GB) OGMA (537GB) LUGH (407GB)

  5. Storage spec and configuration • ASM: • ATLAS: • External redundancy • Single disk group • Two disks: • disk 1 of 407 GB (205 free) • disk 2 of 537 GB (271 free) • LHCb: • External redundancy • Single disk group • One disk 407 GB (337 free)

  6. Performance MB/sec

  7. Performance IO/sec 7

  8. Performance Latency 8

  9. Future Plans OGMA LUGH FC switch 1 SANBOX 5200 2Gb/s FC switch 2 SANBOX 5602 4Gb/s Disk array 1 Disk array 2 mirror ASM mirroring OGMA OGMA LUGH LUGH

  10. Future Plans • Two disk arrays used by all or systems except TAG: • Storage: • 2 SAN, 2GBps FC • ? (third disk array) • two switches: • SANBOX 5200 2Gb/s • SANBOX 5602 4Gb/s • Physical disk available: • Array 1: 16 disks SATA 260GB (backup) • Array 2: 6 disks SATA 550GB ? (storage) • Array 3:? (storage) • Arrays configured with RAID5 or RAID6

  11. Future Plans • ASM: • ATLAS: • Normal redundancy • Single disk group two fail groups • Two or more disks • Mirror disks on different disk array • LHCb: • Normal redundancy • Single disk group two fail groups • Two or more disks • Mirror disks on different disk array

  12. Migration date estimation • ATLAS by mid June • LHCb by the end August

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