Which three storage components are available after the standard initial Database machine
deployment?
A.
The DATA_<DBM_Name> ASM diskgroup
B.
The RECO_<DBM_Name> ASM diskgroup
C.
Mirrored system partitions on hard disk 0 and hard disk 1
D.
The DBFS_DG diskgroup with external redundancy
E.
Exadata Smart Flash Cache using all of the flashdisk space
Explanation:
The default configuration on Exadata is to have 3 diskgroups – DATA, RECO, and
DBFS_DG.
By default, DBFS_DG diskgroup with normal redundancy, not external.
Ans C is correct ?
Answer c is correct as it stores cell OS image, swap scape, exadata cell software binaries, metric and alert repository and various other configuration and metadata files.
A, B, and C
A, B & C
Guys,
“3 storage components.”
System are is hardly storage.
so I think I will go with ABE.
Flash cache is storage and uses up the entire cache when default.
I believe it’s about the system partition on the first and second disk in the storage cell…. it’s about storage
I’ll go with A B C
A, B, C
As part of a standard Exadata deployment, there are 3 default disk groups created, DATA, RECO and DBFS_DG.
So I will select ABD
In Exadata Diskgroups get created with only Normal or High redundancy, so option B couldnt be an answer.
A, B & E is correct set. As all flashcache is used and get created as soon as MS recognized there are unused flashdisks. It get created automatically.
There are no external redundancy disk groups in Exadata – you have a choice of either normal or high redundancy. When creating disk groups, ASM automatically puts all grid disks from the same storage cell into the same failgroup. The failgroup is then named after the storage cell.
So D is out
I’ll go with A, B, E
I believe it’s about the system partition on the first and second disk in the storage cell…. it’s about storage
I’ll go with A B C
ABC
D- it would have been right if it says NORMAL redundancy
E-is wrong as Flash disk also use for FLASHLOG
I prefer A, B, E.
Only a small part of the flash disk is used by flash logs.
And the system partitions are not really available storage components… are they?
i think A,B,E
http://www.oracle.com/technetwork/database/exadata/exadata-smart-flash-cache-366203.pdf
Creating Flash Disks Out of the Flash Cache
…
When an Exadata cell is installed, by default, the flash is assigned to be used as Flash Cache(or for Smart Logging) and user data is automatically cached using the default caching behavior.
…
A: The DATA_ ASM disk group
B: The RECO_ ASM disk group
E: Exadata Smart Flash Cache using all of the flash disk space
Explanation:
The DATA_ and RECO_ diskgroups are generated automatically.
Each flash device is visible to the Exadata cell software as a LUN and the initial cell configuration process creates flash-based cell disks on all the flash devices
Not C, after initial disk0 1 2 3 for raid 5
Correct Answer is A,B,C.
For C answer, please check the below link:
https://raviarra.wordpress.com/2016/03/06/understanding-exadata-disk-layout/
Each Exadata storage cell node contains 12 physical disks.
Each of the first two disks Exadata reserves for system area that spans 4 disks partitioned with total of 29 gb.
System area contains OS image, Exadata software binaries, metrics and various other config files and logs.
The two system disks are mirror copies of each other maintained via software mirroring (mdadm) utility.