Expert Oracle Exadata - Parent Directory

CHAPTER 14 STORAGE LAYOUTLinux PartitionsCell Disk 1Cell Disk 2Cell Disk 3Cell Disk 11Cell Disk 12Figure 14-9. Cell disk layoutThis reserved space can be seen by running fdisk on one of the storage cells. The /dev/sda3partition in the listing is the location of the cell disk. All other partitions are used by the Linux operatingsystem.[enkcel03:root] /root> fdisk -lu /dev/sda…Device Boot Start End Blocks Id System/dev/sda1 * 63 240974 120456 fd Linux raid autodetect/dev/sda2 240975 257039 8032+ 83 Linux/dev/sda3 257040 3843486989 1921614975 83 Linux/dev/sda4 3843486990 3904293014 30403012+ f W95 Ext'd (LBA)/dev/sda5 3843487053 3864451814 10482381 fd Linux raid autodetect/dev/sda6 3864451878 3885416639 10482381 fd Linux raid autodetect/dev/sda7 3885416703 3889609604 2096451 fd Linux raid autodetect/dev/sda8 3889609668 3893802569 2096451 fd Linux raid autodetect/dev/sda9 3893802633 3897995534 2096451 fd Linux raid autodetect/dev/sda10 3897995598 3899425319 714861 fd Linux raid autodetect/dev/sda11 3899425383 3904293014 2433816 fd Linux raid autodetectYou can see the smaller cell disks in the size attribute when you run the list celldisk command:CellCLI> list celldisk attributes name, devicePartition, size –where diskType = 'HardDisk'CD_00_cell03 /dev/sda3 1832.59375GCD_01_cell03 /dev/sdb3 1832.59375GCD_02_cell03 /dev/sdc 1861.703125GCD_03_cell03 /dev/sdd 1861.703125GCD_04_cell03 /dev/sde 1861.703125GCD_05_cell03 /dev/sdf 1861.703125GCD_06_cell03 /dev/sdg 1861.703125GCD_07_cell03 /dev/sdh 1861.703125GCD_08_cell03 /dev/sdi 1861.703125GCD_09_cell03 /dev/sdj 1861.703125GCD_10_cell03 /dev/sdk 1861.703125GCD_11_cell03 /dev/sdl 1861.703125GLet’s take a look at a fairly typical configuration to illustrate how grid disks are allocated in thestorage cell. In this example we’ll create grid disks to support three ASM disk groups. SYSTEM_DG is fairlylarge and will be used for DBFS (clustered file system storage) in addition to the OCR and Voting files.481