Plan and install

Sizing guidelines

A quick sizing model for Datamotive deployments, with links to detailed Easy Hybrid DR Management Server and Replication Node sizing.

Product: Datamotive Platform
Version: v2.0.3
Last updated: Updated May 28, 2026
Reading time: 1 min read

Sizing starts with workload count, changed-data rate, recovery objectives, source platform behavior, WAN capacity, and cloud quota readiness. Use this page for first-pass planning, then use the product-specific sizing page before production deployment.

Key input variables

Collect these values before selecting a deployment size:

Protected workload count - the number of VMs or instances in scope.
Protected disk count - the number of disks that can replicate in parallel.
Average changed data per disk - the expected changed data per replication interval.
RPO target - the maximum acceptable time between recoverable checkpoints.
WAN capacity and latency - sustained throughput available for replication.
Target cloud quota readiness - vCPU, disk, snapshot, NIC, IP, and API limits in the recovery region.

First-pass replication sizing

Deployment scale	vCPU	Memory	Network	Recommended workloads	Recommended parallel disks
Very small	4	8 GB	Up to 500 Mbps	Up to 30	60 to 80
Small	4	16 GB	1-5 Gbps	30 to 60	80 to 200
Medium	8	32 GB	10 Gbps	60 to 150	200 to 500
Large	16	64 GB	10-30 Gbps	150 to 300	500 to 1000
Very large	32	128 GB	50 Gbps+	300+	1000+

These ranges assume approximately 500 MB of changed data per disk per 30-minute replication interval. Actual sizing depends on churn, fragmentation, source storage latency, cloud write behavior, and recovery concurrency.

Bandwidth planning

For steady-state replication, estimate bandwidth from changed data per interval:

text

Required Mbps = (changed data GB per interval * 8192) / interval seconds

Then adjust for compression, deduplication, peak concurrency, and headroom. Do not use link bandwidth alone as the sizing metric; source reads, cloud writes, and API throttling can become the limiting factor.

Scale out

Use multiple Replication Nodes for large environments:

Environment size	Recommended Replication Nodes
Fewer than 50 workloads	1
50 to 300 workloads	2 to 4
300 to 1000 workloads	4 to 8
More than 1000 workloads	8+

Detailed sizing

Easy Hybrid DR sizing

Detailed Management Server, Replication Node, platform-specific, Prep Node, and DeDup Node sizing.

Performance

How flow control, cloud writes, WAN behavior, and recovery concurrency affect throughput.

Was this page helpful?