Suggested Answer:B🗳️
Provisioned IOPS SSD (io1) volumes are designed to meet the needs of I/O-intensive workloads, particularly database workloads, that are sensitive to storage performance and consistency. An io1 volume can range in size from 4 GiB to 16 TiB and you can provision 100 up to 20,000 IOPS per volume. The maximum ratio of provisioned IOPS to requested volume size (in GiB) is 50:1. For example, a 100 GiB volume can be provisioned with up to 5,000 IOPS. Any volume 400 GiB in size or greater allows provisioning up to the 20,000 IOPS maximum. Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumeTypes.html
The ratio is 3:1 for EBS gp
and for EBS sc1 or st1, the ratio IOPS:size is not used,
the preferred ratio is throughput:size with throughput in MiB/s.
st1 : 40(MiB/s)/TB baseline, 250 (MiB/s)/TB burst
sc1 : 12(MiB/s)/TB baseline, 80 (MiB/s)/TB burst
I have not tested it but with these information the compared throughput of a 100 GiB EBS volume WOULD BE :
io1 : 100 MiB/s for 5000 IOPS and 16 KB blocks (because linear scaling until 500 MiB/s and 32 000 IOPS or non Nitro EC2, 1000 MiB/s and 64 000 IOPS)
io1 : 500 MiB/s for 5000 IOPS and 256 KB blocks (ceiling reached from 2000 IOPS on)
gp2 : 250 MiB/s for 300 IOPS or 500 MiB/s if you burst it to 2000 IOPS whatever block size
st1 : 4 MiB/s on baseline ratio, 25 MiB/s on burst ratio
sc1 : 1,2 MiB/s on baseline ratio, 80 MiB/s on burst ratio
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
tekkart
Highly Voted 3 years, 8 months ago01037
3 years, 7 months agocldy
Most Recent 3 years, 6 months agotekkart
3 years, 7 months ago