Expert Oracle Exadata - Parent Directory

CHAPTER 15 COMPUTE NODE LAYOUTRecall from Chapter 14 that grid disks are actually slices of cell disks. These grid disks are in turnused to create ASM disk groups. For example, each of the following commands creates twelve 200G griddisks on storage cell 1 (one per cell disk). These grid disks are then used to create the DATA1…DATA8, andRECO1…RECO8 disk groups. If all fourteen storage cells of an Exadata full rack configuration are used, itwill yield 33.6 terabytes of storage (assuming 2 TB, high-capacity drives) for each disk group, ((14 storagecells × 12 grid disks per cell) × 200G).CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=DATA1_DG, size=200G...CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=DATA8_DG, size=200GCellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=RECO1_DG, size=200G...CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=RECO8_DG, size=200GTable 15-1 is a summary of a storage layout that supports eight standalone databases, each having a33.6TB DATA disk group and a 33.6TB RECO disk group.Table 15-1. Grid DisksDisk Group Grid Disk Total GB Storage Cell Cell DiskDATA1 DATA1_DG_CD_00-11 33,600 1–14 1–12DATA2 DATA2_DG_CD_00-11 33,600 1–14 1–12DATA3 DATA3_DG_CD_00-11 33,600 1–14 1–12DATA4 DATA4_DG_CD_00-11 33,600 1–14 1–12DATA5 DATA5_DG_CD_00-11 33,600 1–14 1–12DATA6 DATA6_DG_CD_00-11 33,600 1–14 1–12DATA7 DATA7_DG_CD_00-11 33,600 1–14 1–12DATA8 DATA8_DG_CD_00-11 33,600 1–14 1–12RECO1 RECO1_DG_CD_00-11 33,600 1–14 1–12RECO2 RECO2_DG_CD_00-11 33,600 1–14 1–12RECO3 RECO3_DG_CD_00-11 33,600 1–14 1–12RECO4 RECO4_DG_CD_00-11 33,600 1–14 1–12RECO5 RECO5_DG_CD_00-11 33,600 1–14 1–12RECO6 RECO6_DG_CD_00-11 33,600 1–14 1–12502