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

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Presentation transcript:

Storage review Carmine Cioffi Database Administrator and Developer 3D Workshop, Barcelona (ES), April 2009

Outline Storage spec and configuration Performance Future plans 2

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

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

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) 5

Performance MB/sec 6

Performance IO/sec 7

Performance Latency 8

Future Plans 9 OGMALUGH FC switch 1 SANBOX Gb/s Disk array 1 LUGH OGMA FC switch 2 SANBOX Gb/s Disk array 2 mirror LUGH OGMA ASM mirroring

Future Plans Two disk arrays used by all or systems except TAG: –Storage: –2 SAN, 2GBps FC –? (third disk array) –two switches: SANBOX Gb/s SANBOX Gb/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 10

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 11

Migration date estimation ATLAS by mid June LHCb by the end August