A Dedicated Host's (DDH) specification determines the ECS instance families it supports and the number of ECS instances that can be created on it. This topic describes the available DDH specifications and their corresponding configurations.
Overview
A DDH specification defines the configuration of a physical server, including its physical CPU model, number of cores, vCPU count, socket count, memory, and local storage.
Predefined DDH specifications are grouped by use case, similar to the ECS instance families on shared hosts. This lets you create ECS instances on a DDH from compatible instance families. For example, on a DDH with the g6 specification, you can create any ECS instance from the g6, c6, r6, and ic6 families. For more information about ECS instance families and the network performance of each instance specification, see Instance families.
Custom instance specifications let you customize the vCPU-to-memory ratio. For example, on a DDH with the g6s specification, you can create ECS instances with custom vCPU counts and memory sizes.
Available specifications
DDH specification families include overprovisioned, enhanced, general-purpose, memory-optimized, compute-optimized, and local disk types. Performance differs across these families. When you purchase a DDH, choose a suitable specification.
The footnote symbols ①, ②, ③, and ④ in the following tables refer to the following:
①: For non-overprovisioned specifications, vCPU cores = physical CPU cores × 2.
②: For overprovisioned specifications, vCPU cores = physical CPU cores × 2 × CPU overprovisioning ratio.
③: For more information about local disks, see local disks.
The total packet forwarding rate and network bandwidth of all ECS instances on a DDH cannot exceed the DDH's capacity. For information about the network performance of each instance family, see instance families.
Overprovisioned
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores② | Memory (GiB) | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
r8as, memory-optimized | custom specification | 2 | AMD EPYC™ Genoa 9T24 | 192 | 1152 | 3072 | 128 | 3600 |
g8as, general-purpose | custom specification | 2 | AMD EPYC™ Genoa 9T24 | 192 | 1152 | 1536 | 128 | 3600 |
g7s, general-purpose | custom specification | 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 640 | 512 | 64 | 1200 |
r7s, memory-optimized | custom specification | 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 640 | 1024 | 64 | 1200 |
c6s, compute-optimized | custom specification | 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 520 | 180 | 25 | 400 |
g6s, general-purpose | custom specification | 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 520 | 372 | 25 | 400 |
r6s, memory-optimized | custom specification | 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 520 | 750 | 25 | 400 |
v5, CPU-overprovisioned | v5 | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 336 | 672 | 25 | 550 |
Enhanced
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
r7t, security-enhanced memory-optimized |
| 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 1024 | 64 | 2400 |
g7t, security-enhanced general-purpose |
| 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 512 | 64 | 2400 |
c7t, security-enhanced compute-optimized |
| 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 256 | 64 | 2400 |
g6t, security-enhanced general-purpose | g6t | 2 | Intel® Xeon® Platinum 8269 (Cascade Lake) | 52 | 104 | 384 | 32 | 2400 |
c6t, security-enhanced compute-optimized | c6t | 2 | Intel® Xeon® Platinum 8269 (Cascade Lake) | 52 | 104 | 192 | 32 | 2400 |
g5se, storage-enhanced | g5se | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 70 | 336 | 25 | 550 |
g5ne, network-enhanced | g5ne | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 72 | 288 | 25 | 2400 |
General-purpose
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
g9i |
| 2 | Intel® Xeon® Granite Rapids | 192 | 384 | 1536 | 128 | 4000 |
g8i |
| 2 | Intel® Xeon® Emerald Rapids | 96 | 192 | 1024 | 100 | 3000 |
g7 |
| 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 512 | 64 | 2400 |
g6e, balanced enhanced |
| 2 | Intel® Xeon® Platinum 8269 (Cascade) | 52 | 104 | 384 | 32 | 2400 |
g6 |
| 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 104 | 384 | 25 | 400 |
g5 | g5 | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 84 | 336 | 25 | 550 |
Memory-optimized
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
r9i |
| 2 | Intel® Xeon® Granite Rapids | 192 | 384 | 3072 | 128 | 4000 |
r7 |
| 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 1024 | 64 | 2400 |
r6e, balanced enhanced |
| 2 | Intel® Xeon® Platinum 8269 (Cascade) | 52 | 104 | 768 | 32 | 2400 |
r6 |
| 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 104 | 768 | 25 | 400 |
r5 | r5 | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 86 | 688 | 25 | 550 |
Compute-optimized
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
c7 | c7 | 2 | Intel® Xeon® Platinum 8369B (Ice Lake) | 64 | 128 | 256 | 64 | 2400 |
c6e, balanced enhanced |
| 2 | Intel® Xeon® Platinum 8269 (Cascade) | 52 | 104 | 192 | 32 | 2400 |
c6 |
| 2 | Intel® Xeon® Platinum 8269CY (Cascade Lake) | 52 | 104 | 192 | 25 | 600 |
c5 | c5 | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 86 | 172 | 25 | 550 |
Local disk
DDH specification | Supported instance families | CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Local SSD (GiB)③ | Network bandwidth (Gbit/s)④ | Packet forwarding rate (10,000 PPS)④ |
i2, local SSD type | i2 | 2 | Intel® Xeon® Platinum 8163 (Skylake) | 48 | 80 | 640 | 17880 | 25 | 550 |
Discontinued specifications
DDH specification | ECS instance families | Number of CPUs (sockets) | Physical CPU model | Physical CPU cores | vCPU cores① | Memory (GiB) | Network bandwidth (out/in, Gbit/s)④ | Packet forwarding rate (out/in, 10,000 PPS)④ |
general-purpose network-enhanced sn2ne | sn2ne | 2 | Intel Xeon E5-2682 v4 (Broadwell) | 32 | 56 | 224 | 10 | 450 |
compute-optimized network-enhanced sn1ne | sn1ne | 2 | Intel Xeon E5-2682 v4 (Broadwell) | 32 | 56 | 112 | 10 | 450 |
memory-optimized network-enhanced se1ne | se1ne | 2 | Intel Xeon E5-2682 v4 (Broadwell) | 32 | 56 | 480 | 10 | 450 |