This article outlines the virtual machine requirements, including memory and data storage, for deploying the Delphix Engine on the Azure Public Cloud and Government Cloud. Once the requirements listed on this page are reviewed, refer to the next articles on Azure deployment:
Instance families: The minimum requirements are listed below:
64GB RAM minimum
Network Bandwidth: 10Gbps min (25Gbps recommended)
Azure Accelerated Networking
Processors: Intel or AMD (No ARM)
Recommended instance families:
Larger instance types provide more CPU, which can prevent resource shortfalls under high I/O throughput conditions.
Larger instances also provide more memory, which the Delphix Engine uses to cache database blocks. More memory will provide better read performance.
Delphix Elastic Data Engines (engines backed by blob storage) will need more bandwidth than traditional engines (backed by block storage) because the blob bucket used to store data is accessed over a network pipe that is shared with other engines activity.
Information on Azure instances
The use of Azure Accelerated Networking is supported for Delphix Engines and is recommended to maximize network performance. Accelerated Networking provides more bandwidth with more consistent and lower network latencies.
Azure virtual network (VNet)
The Delphix Engine must have <= 1 ms of latency to the Target and Staging environments. Longer latencies are permitted between the Delphix Engine and Source environments, but may impact Snapsync timings. VNET peering may be used, as long as latency requirements are met. For very low latency requirements, consider Proximity Placement Groups for Delphix Engine, Target, and Staging.
Network security group (NSG)
The security group must be modified that allows access to all networking ports used by the Delphix Engine and the various source/target platforms. See General network and connectivity requirements for information about specific port configurations. See Network performance configuration options for information about network performance tuning.
General Storage Configuration
Allocate initial storage equal to the size of the physical source databases. For high redo rates and/or high DB change rates, allocate an additional 10-20% storage.
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.
Maximize Delphix Engine RAM for a larger system cache to service reads.
See, Delphix storage migration.
Azure Premium Storage
Premium storage utilizes solid-state drives (SSDs). Ultra disk is also supported.
Devices up to 32TB are supported.
A maximum of 256TB is supported.
Cache setting: For Data disks, ReadWrite. For Elastic Data cache disks, NONE.
I/O requests of up to 256 kilobytes (KB) are counted as a single I/O operation (IOP) for provisioned IOPS volumes.
IOPS vary based on storage size with a maximum of 20,000 IOPS.
For Delphix Continuous Cloud Engines backed by object storage, read the section Delphix Elastic Data Engines (Engines backed by object storage) in Initial Setup.
Azure VM Extensions are not currently supported.