You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS) for
persistence At times throughout the day, you are seeing large variance in the response times of the database
queries Looking into the instance with the isolate command you see a lot of wait time on the disk volume that
the database’s data is stored on.
What two ways can you improve the performance of the database’s storage while maintaining the current
persistence of the data?
Choose 2 answers
A.
Move to an SSD backed instance
B.
Move the database to an EBS-Optimized Instance
C.
T Use Provisioned IOPs EBS
D.
Use the ephemeral storage on an m2 4xiarge Instance Instead
I think the answer should be B & C, as the default general purpose EBS would already be on SSD, so options to move to PIOPS would be the best choice.
EBS is already SSD, so B and C are correct answers as Bryan said.
Actually I am mistaken. You can still use HDD for EBS.
https://aws.amazon.com/ebs/details/
So A, B, or C would appear to be valid answers?
There is no such thing as SSD backed instance. So A is incorrect.
Cloud Guru goes with B, C
whatever cloud guru says 90 % its wrong so dont follow cloud guru 🙂
B,C
bc
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html
A and B are write
bc
BC
BC
Provisioned IOPS are SSDs, and they are better then just SSDs. So B & C