EBS Volumes and IOPS Flashcards
What are the two variants of SSD
gp2 - General Purpose - Boot volumes
io1 - Provisioned IOPS - I/O intensives. NoSQL, RDB, low latency.
What does IOPS stand for
Input/Output Operations per Second
What does IOPS benchmark?
Performance for SSD
What determines the number of IOPS for gp2 and io1 volumes?
Volume size
What is the maximum IOPS for non-io1 volumes?
10,000 IOPS
What is the minimum IOPS for non-io1 volumes?
100
What is the maximum IOPS for io1 volumes?
32,000
How is the number of IOPS determined for gp2 volumes?
3 IOPS/GB
How is the number of IOPS determined for io1 volumes?
50 IOPS/GB
What happens if you reach your IOPS limit?
- I/O requests will begin to queue
2. Application response may degrade
How large must your volume be to reach the maximum IOPS for non-provisioned IOPS
3,334GB
If your volume is at 10,000 IOPS, and you need more, how can this be solved?
Change the storage class to provisioned IOPS (io1)
If your volume is 500GB, and your I/O requests are beginning to queue, how should you resolve this issue in the least expensive way?
Increase your volume size