This article covers the virtual machine requirements, including memory and data storage, for the deployment of the Delphix Engine on IBM Cloud. Once the requirements listed on this page are reviewed, refer to the next articles on IBM Cloud deployment:

Supported Profiles

The following is a list of profiles that are supported to deploy Delphix on IBM Cloud. 

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  • The Delphix Engine most closely resembles a storage appliance and performs best when provisioned using a storage-optimized profile.
  • Larger profiles provide more CPU, which can prevent resource shortfalls under high I/O throughput conditions.
  • Larger profiles also provide more memory, which the Delphix Engine uses to cache database blocks. More memory will provide better read performance.
  • Recommended minimum size of 8 vCPU and 64G memory.

Network Configuration

Virtual Server Instances
  • Deploy the Delphix Engine and all of the source and target environments in the same VPC network.
  • When adding environments to the Delphix Engine, use the host’s VPC IP addresses.
Security Configuration

Port Requirements

Using the Delphix Engine for IBM Cloud will require connections to source and target database servers. Such connections require various ports to be open, enabling communications. For a detailed list of the network and port requirements, click the link that corresponds with the relevant database platform.

General Storage Configuration


General Storage Configuration

  • Allocate initial storage equal to the size of the physical source database storage. For high redo rates and/or high DB change rates, allocate an additional 10-20 %.
  • Add storage when storage capacity approaches 30% free.
  • Delphix recommends using a minimum of four equally sized storage disks to run the Delphix Engine. This allows the Delphix File System (DxFS) to assure its file systems are always consistent on disk without additional serialization. This also enables the Delphix Engine to achieve higher I/O rates by queueing more I/O operations to its storage.
  • Reference:  IBM Block Storage Documentation.

Additional IBM Configuration Notes

  • Expandable volume is a beta feature that is available for evaluation and testing purposes. This feature is available in the US South, US East, London, and France regions. Contact an IBM Sales representative if interested in getting access at https://cloud.ibm.com/docs/vpc?topic=vpc-expanding-block-storage-volumes.
  • After performing an “online” resize/expansion of a storage volume using IBM Cloud tools, then use the Delphix sysadmin interface to “Expand” the storage device; otherwise, the newly allocated storage space, from the resize/expansion, will not be used.
  • Resize/expansion of a storage volume using IBM Cloud is not supported while the Delphix engine is in a stopped state.
  • Removing a storage volume should be done while the machine is running. First use the Delphix sysadmin CLI interface to “Unconfigure” the storage device, then remove it from IBM Cloud.

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