z1d family
The z1d family has 6 sizes on AWS RDS, from 2 to 48 vCPUs and 16 to 384 GiB of memory. In US East (N. Virginia), on-demand prices run $0.342 to $8.208 per hour for PostgreSQL, Single-AZ. It is sold in 13 regions and listed as memory optimized.
Sizes and prices in US East (N. Virginia)
| Type | vCPUs | Memory (GiB) | Tier | On-demand /hr | 1-yr reserved /hr |
|---|---|---|---|---|---|
| db.z1d.large | 2 | 16 | Oracle Enterprise BYOL | $0.342 | $0.2334 |
| db.z1d.xlarge | 4 | 32 | Oracle Enterprise BYOL | $0.683 | $0.4661 |
| db.z1d.2xlarge | 8 | 64 | Oracle Enterprise BYOL | $1.368 | $0.9337 |
| db.z1d.3xlarge | 12 | 96 | Oracle Enterprise BYOL | $2.052 | $1.401 |
| db.z1d.6xlarge | 24 | 192 | Oracle Enterprise BYOL | $4.104 | $2.801 |
| db.z1d.12xlarge | 48 | 384 | Oracle Enterprise BYOL | $8.208 | $5.602 |
Categories
Regions
Prices in USD per hour for PostgreSQL, Single-AZ; reserved prices are 1 year, no upfront. Updated 2026-11-12 from AWS public price lists. Compare all AWS RDS sizes.