High Memory instance profiles - Gen 3

The very high memory family of 3rd generation virtual server profiles are built atop the 4th Generation Intel® Xeon® Scalable processors. This generation provides NUMA pinning, increased overall instance throughput up to 200 Gbps, and provides secure boot as an option for your virtual server. The profiles are targeted towards workloads that need a higher amount of memory per core.

The very high memory profiles can also be paired with a corresponding dedicated host. This solution allows for single tenant hypervisors running workloads from a single IBM Cloud® account.

Operating systems

  • Linux
  • Windows

Processor generation

  • Intel 8474C - 4th Generation Xeon Scalable processor

Availability

  • Status: Select availability
  • Regions:
    • Washington DC (us-east)
    • Toronto (ca-tor)

Capabilities

  • Core type: Dedicated
  • Dedicated host: Yes
  • Hyperthreading: Yes (SMT-2)
  • Secure boot: Yes (optional)
  • Confidential computing: No
  • Live migration: Yes
  • Instance storage: Yes
  • NUMA pinning: Yes
  • NIC Capabilities:
    • Max single NIC throughput: up to 32 Gbps
    • Bandwidth pooling: No
  • Volume bandwidth allocation method: weighted by default; it can be updated to pooled.

VM configuration

  • Hardware type: i440fx
    • Utilizes Q35 hardware type when running in secure boot mode.
  • Cloud networking: virtio
  • Block boot volume: virtio
    • Exception: vscsi for Windows-based instances
  • Block data volumes: virtio
  • Instance storage: virtio

Instance profiles

Very high memory profile options
Instance profile vCPU / Cores Memory (GiB) Bandwidth cap (Gbps) Instance storage (Quantity x GB)
vx3d-2x32 2 / 1 32 4 1x65
vx3d-4x64 4 / 2 64 8 1x130
vx3d-8x128 8 / 4 128 16 1x260
vx3d-16x256 16 / 8 256 32 1x520
vx3d-24x384 24 / 12 384 48 1x780
vx3d-32x512 32 / 16 512 64 2x520
vx3d-48x768 48 / 24 768 96 2x780
vx3d-64x1024 64 / 32 1024 128 2x1024
vx3d-88x1408 88 / 44 1408 176 2x1430
vx3d-96x1536 96 / 48 1536 192 2x1560
vx3d-128x2048 128 / 64 2048 200 2x2080
vx3d-176x2816 176 / 88 2816 200 2x2860

Limits

An instance has a limit for the number of volumes and virtual network interfaces that can be attached. This limit is based on the size of the instance.

Very high memory family limits for maximum volumes, and maximum network interfaces
Number of vCPUs Max volumes Max vNICs
2-16 12 5
17-48 12 10
49+ 12 15

Dedicated host profiles

Dedicated hosts allow users to provision a single-tenant host server and then provision virtual server instances of the corresponding family on the dedicated host.

Very high memory profile option for dedicated hosts
Profile vCPUs / Cores Memory (GiB) Instance storage Sockets per host (NUMA) Supported instance types
vx3d-host-176x2816 176 / 88 2816 2x3200 GB 2 vx3d (all)