Cloud Platforms

Common questions about cloud support, data residency, and infrastructure architecture in Tessell.

Platform	Topics covered
Azure	Infrastructure, certifications, Zero Data Loss, HA/DR, RBI compliance, Azure data service integrations, migration
AWS	Infrastructure, certifications, HA/DR, FSx for NetApp ONTAP

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Q: Which public clouds does Tessell support?

A: Tessell is a cloud-neutral service. Database services can be hosted on:

• AWS (Amazon Web Services)
• Azure (Microsoft Azure)
• GCP (Google Cloud Platform)

All four relational engines (Oracle, PostgreSQL, MySQL, SQL Server) are available on all three clouds. Regional availability details are in Supported Cloud Regions.

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Q: Where are the actual database servers hosted — in Tessell's account or mine?

A: It depends on your deployment option (see Deployment Options):

Deployment option	Where database VMs and storage live
Professional, Business, Virtual Private Tessell (VPT)	Tessell's cloud account — Tessell owns and manages the underlying cloud resources
VPT @ Customer	Your own cloud account — you own the subscription; Tessell's control plane connects in to manage provisioning, patching, backups, and monitoring

VPT @ Customer is the preferred option for organisations with strict data residency or compliance requirements, because data never leaves your own cloud boundary.

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Q: Why does Tessell attach multiple disks to a database server?

A: Tessell uses separate disks for:

• Data — the primary database files
• Logs — transaction/redo logs (separate to prevent log I/O from competing with data I/O)
• Backups — local backup staging

This disk separation is a key reason Tessell can offer comparatively very high IOPS — each disk type is tuned independently, and I/O contention between data, log, and backup operations is eliminated.