GP-3 Conversion

A new EBS volume type, GP3, is available in AWS. GP3 offers up to 20% better pricing than previous GP2 Volumes. There are no configurations where a GP2 volume is more cost effective than a GP3. Updating can be done in place with no down time so there is no reason to wait to switch.

Announcement

Blog Post

Understanding Throughtput and IOPs

Cost Calculation and Conversion

Volume Size	Throughput
< 170 GBs	128 MB/s
> 170 GBs	250 MB/s

Volume Size	IOPs
< 100 GBs	100 IOPs (temporarily up to 3000 IOPs when using burst credits)
> 100 GBs	3 * GB Size of Volume

Usage

Using python3 run the following two files. The first file will output myConversionFile.csv in the current working directory. The conversion file is a CSV that converts current gp2 usage to gp3. You can directly adjust the IOPs and throughtput you would like to use by editing the csv.

python3 createListOfGP2VolumesToConvert.py

python3 convertVolumesToGP3.py --conversionFile myConversionFile.csv

Components

Three threads run in convert volumes

1. modify_volume - runs the request to convert the volume
2. describe_volume_modifications - describes all volumes modifications every ten seconds. Notifies sepearate threads to check on their modification progress
3. monitor_volume_modification_progress - checks the progress for when the volume is fully available. AWS switches the volume over to gp3 within 10-20 seconds, but it takes up to 30 minutes to "optimize" the volume. Volume progress seems to only have 3 values as well 0%, 99%, and 100%

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.