How Oracle Works on Exadata - Oracle Exadata Recipes: A Problem-Solution Approach - page 61

From CellCLI we can see how these flash devices are mapped to usable Exadata Flash entities, as discussed
in Recipe 1-6:

CellCLI> list physicaldisk where disktype='FlashDisk' attributes name,disktype,physicalSize,
slotNumber

FLASH_1_0 FlashDisk 22.8880615234375G "PCI Slot: 1; FDOM: 0"

FLASH_1_1 FlashDisk 22.8880615234375G "PCI Slot: 1; FDOM: 1"

FLASH_1_2 FlashDisk 22.8880615234375G "PCI Slot: 1; FDOM: 2"

FLASH_1_3 FlashDisk 22.8880615234375G "PCI Slot: 1; FDOM: 3"

FLASH_2_0 FlashDisk 22.8880615234375G "PCI Slot: 2; FDOM: 0"

... Flash cards 2_1, 2_2, and 2_3 omitted

FLASH_4_0 FlashDisk 22.8880615234375G "PCI Slot: 4; FDOM: 0"

... Flash cards 4_1, 4_2, and 4_3 omitted

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

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

CellCLI>

■ the above output is generated on an exadata x2-2 Quarter rack. on the x3-2 and x3-8 models, you will see
larger amounts of pCI flash; each card is 384 GB in size as compared to 96 GB in size.

Note

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

■ Note recipes in Chapter 18 discuss various topics on exadata's smart Flash Cache and smart Flash logging

features.

3-4. Identifying Cell Server Software Processes
Problem
You wish to identify the key operating system processes on the Exadata Storage Servers that run Exadata's unique
storage server software and understand how the storage server's Cell Services processes are related and what function
they perform.