You can divide a reservation containing larger instance types into smaller ones. For example, you can convert 5 m3.large
reservations into 10 m3.medium
reservations.
You can also combine more than one reservation containing smaller instance types into larger ones. For example, you can convert 10 m3.medium
reservations into 5 m3.large
reservations, provided the reservations being combined have the same expiration date and time.