Exadata Hardware - Oracle Exadata Recipes: A Problem-Solution Approach - page 22

/dev/sda10 72433 72521 714861 fd Linux raid autodetect
/dev/sda11 72522 72824 2433816 fd Linux raid autodetect
[root@cm01cel01 oracle]#

■ Note On the Exadata X3-2 Eighth Rack, only six SAS disks are enabled per storage cell.

1-5. Listing Disk Storage Details on the Compute Servers
Problem
As an Exadata administrator, DBA, or storage administrator, you wish to better understand how storage is allocated,
presented, and used in the Exadata compute server.

Solution
In this recipe, we will show you how to do the following:

df • Report your file system details using

fdisk • List your disk partition information using

lsscsi • Query your SCSI disk device information using

MegaCli64 utility to display your LSI MegaRAID device information

• Use the

pvdisplay , • List your physical volume, volume group, and logical volume information using

vgdisplay , and lvdisplay

Each Exadata compute server in the X2-2 and X3-2 models has four 300GB disks, which are partitioned and
formatted to present a root file system and a single /u01 mount point. The Oracle Grid Infrastructure and 11gR2
Oracle RDBMS binaries are installed on the /u01 mount point. Referring to the imageinfo output, the root file system
is installed on /dev/mapper/VGExaDb-LVDbSys1:

[root@cm01dbm01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VGExaDb-LVDbSys130G 22G 6.5G 78% /
/dev/sda1 124M 48M 70M 41% /boot
/dev/mapper/VGExaDb-LVDbOra199G 52G 42G 56% /u01
tmpfs 81G 4.0M 81G 1% /dev/shm
[root@cm01dbm01 ~]#

You can see a 30 GB root file system, a small boot file system, and a 100 GB /u01 mount point. Now let's look at
an fdisk output:

[root@cm01dbm01 ~]# fdisk -l

Disk /dev/sda: 598.8 GB, 598879502336 bytes
255 heads, 63 sectors/track, 72809 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes