AWS Certified SysOps Administrator Practice Exam

How can you increase the performance of a nearly full 8TB gp2 drive while keeping costs at the same level?

1. Create two 4 TB gp2 drives and mount them in RAID 0 on the EC2 instance

2. Upgrade to an 16TB gp2 drive to increase IOPS

3. Create an additional 8 TB gp2 drive and use load balancing

4. Use a combination of gp2 and io1 volumes

The correct answer is: Create two 4 TB gp2 drives and mount them in RAID 0 on the EC2 instance

The option to create two 4 TB gp2 drives and mount them in RAID 0 on the EC2 instance is a viable solution for increasing the performance of a nearly full 8 TB gp2 drive while maintaining cost effectiveness. This approach leverages the striping capabilities of RAID 0, which allows data to be distributed across multiple volumes, effectively improving throughput and IOPS (Input/Output Operations Per Second) by utilizing the combined performance of both drives. By splitting the workload across these two drives, each 4 TB gp2 volume can contribute its IOPS capacity. This is especially pertinent for gp2 volumes, which offer performance scaling based upon the size of the volume; each gp2 volume can provide up to 3 IOPS per GB, making two separate volumes offer a large total IOPS as the system can access both volumes simultaneously. In contrast, upgrading to a single 16 TB gp2 drive might increase the IOPS capacity directly, but it would certainly incur more costs due to the larger overall size of the volume. This option may not maintain the desired cost level. Creating an additional 8 TB gp2 drive would similarly increase capacity without directly improving performance, nor does it provide the same performance scaling benefits as RAID 0 would