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Microsoft’s SAP ERP (R/3) System (cont)

Lessons Learned of running 4.5TB able of 15,000 IOPs with inexpensive EMC Clarion SAN storage backend:

128 x 146GB 15K rpm spindles available

Don’t overdo the # of LUNs/Volumes. Even for large databases in 10+TB 16 to 64 LUNs usually are plenty enough. Here 16 LUNs chosen

Build RAID1+0 groups: Here 4+4 disks each 146GB, see below for half of the disks

DBA-416M• ISV configurations & implementations – Lessons Learned

BusEnclosure3

RG

RG4

open

open

Bus3Enclosure2

Free

Free

Bus2Enclosure2

Free

Free

BusEnclosure2

Free

Free

BusEnclosure2

RG2

RG5

RG7

Bus3Enclosure

Bus2Enclosure

BusEnclosure

BusEnclosure

RG3

RG6

RG8

Bus3Enclosure

Bus2Enclosure

BusEnclosure

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