Storage: Amazon EBS, EFS, and AWS Storage Gateway

Question 1

User deleted some data in an Amazon EBS volume and there’s a recent snapshot

Answer 1

Can create a new EBS volume from the snapshot and attach it to an instance and copy the delete file across

Question 2

EBS volume runs out of space and need to prevent it

happening again

Answer 2

Use CloudWatch agent on EC2 and monitor disk

metrics with CloudWatch alarm

Question 3

Most cost-effective option for big data app that stores sequentially and infrequent access

Answer 3

Cold HDD (sc1)

Question 4

EBS volume capacity is increased but cannot see the space

Answer 4

Need to extend the volume’s file system to gain access to extra space

Question 5

Need to replace user-shared drives. Must support POSIX permissions and NFS protocols and be accessible from on-premise servers and EC2

Answer 5

Use Amazon EFS

Question 6

Low latency access required for image files in an office location with synchronized backup to offsite location. Local access required and disaster recovery

Answer 6

Use an AWS Storage Gateway volume gateway configured as a stored volume

Question 7

Performance issues with iSCSI drives in volume gateway. CacheHitPercent metric is below 55% and CachePerecentUsed is above 95%

Answer 7

Create a larger disk for cached volume and select it in management console

Question 8

Tape archival system needs replacement

Answer 8

Use an AWS Storage Gateway tape gateway