Exadata Hardware - Oracle Exadata Recipes: A Problem-Solution Approach - page 28

FLASH_5_0 FlashDisk 22.8880615234375G "PCI Slot: 5; FDOM: 0"

... Flash cards 5_1, 5_2, and 5_3 omitted

CellCLI>

Again, we can see the flash devices grouped in sets of four on PCI slots 1, 2, 4, and 5, with each device per PCI slot
residing in FDOM 0, 1, 2, or 3. An fdisk output for one of the devices shows a 24.5 GB slice of storage. If we multiple
this 24 GB by 16, we arrive at our total flash capacity of each storage cell at 384 GB:

[root@cm01cel01 ~]# fdisk -l /dev/sdz

Disk /dev/sdz: 24.5 GB, 24575868928 bytes
255 heads, 63 sectors/track, 2987 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdz doesn't contain a valid partition table
[root@cm01cel01 ~]#

How It Works
Exadata flash storage is provided by Sun Flash Accelerator F20 PCI flash cards. In the Exadata X2 models, there are
four 96 GB PCI flash cards per storage cell, and on the X3-2 and X3-2 models, there are four 384 GB PCI flash cards
per storage cell.
Each PCI flash card has a device partitioned per FDom , yielding 16 flash devices. These flash devices are
manifested as ExadataStorage Server flash disks and used for Smart Flash Cache and Smart Flash Logging.

1-7. Gathering Configuration Information for the
InfiniBandSwitches
Problem
As an Exadata administrator, you wish to better understand the configuration of your InfiniBand switches.

Solution
The quickest way to get a feel for how your InfiniBand switches are configured is to log in to the Web ILOM (Integrated
Lights Out Management) interface. Figure 1-3 shows the InfiniBand firmware version details from the ILOM web
interface:.