Frequently Asked Questions

DanubeData is a next-generation managed services platform that provides AMD Zen4 powered VPS instances, high-performance in-memory caches (Redis, Valkey, Dragonfly), and managed databases (PostgreSQL, MySQL, MariaDB) on Kubernetes infrastructure. We offer instant provisioning, automated backups, real-time monitoring, and enterprise-grade security features.

DanubeData offers several advantages: (1) AMD Zen4 processors for superior performance, (2) Sub-millisecond latency within the same namespace, (3) Simpler pricing with hourly billing, (4) Built-in monitoring and alerting at no extra cost, (5) Centralized parameter groups for configuration management, (6) Advanced firewall rules including instance-to-instance communication, and (7) Automated replica management for high availability.

Getting started is simple: (1) Create an account, (2) Add a payment method (credit card via Stripe), (3) Choose your service (VPS, Cache, or Database), (4) Select a plan and configuration, (5) Deploy in seconds. No credit card required for signup, and you only pay for what you use.

Currently, DanubeData operates in EU regions (Falkenstein, Germany). We prioritize EU-based infrastructure to ensure GDPR compliance and low latency for European customers. Additional regions are planned based on customer demand.

DanubeData uses usage-based pricing. You are billed hourly for running resources (VPS, Cache, Database instances) and storage (snapshots). We record usage every 5 minutes and generate monthly invoices. For example, a VPS running for 100 hours costs 100 × hourly rate. No upfront fees, no long-term commitments.

We accept all major credit cards (Visa, Mastercard, American Express) via Stripe. EU customers can also use SEPA Direct Debit. All payments are processed securely through Stripe, and we never store your card details on our servers.

For EU customers, VAT is calculated based on your location. B2C customers (individuals) are charged VAT at their country rate. B2B customers (businesses) with a valid VAT number benefit from reverse charge mechanism (0% VAT). Non-EU customers are not charged VAT. Your invoices will clearly show VAT amounts and your VAT number if provided.

Invoices are generated at the end of each calendar month. Usage from the 1st to the last day of the month is aggregated and charged. Payment is automatically attempted 3 days after invoice generation. You can view your current usage and estimated costs in the dashboard at any time.

We do not currently offer a traditional free tier. However, our hourly pricing means you can test services for pennies. For example, running a Nano VPS for 1 hour costs €0.004. We also offer credits for new customers and promotional periods - check our current offers or contact sales for details.

To stop charges, simply stop or delete your instances. Stopped VPS and cache instances do not incur compute charges (only storage/snapshot charges apply). Deleted instances stop all charges immediately. Databases must be stopped or deleted to stop charges. Note: snapshots continue to incur storage charges until deleted.

Our VPS instances are powered by AMD Zen4 processors with DDR5 RAM and NVMe SSD storage. Plans range from Nano (4 vCPU, 8GB RAM, 160GB NVMe) to Large (16 vCPU, 32GB RAM, 640GB NVMe). All instances include dedicated resources (no overcommitment), full root access, and can run any Linux distribution.

We support all major Linux distributions: Ubuntu (20.04, 22.04, 24.04), Debian (11, 12), CentOS Stream, Rocky Linux, AlmaLinux, and Fedora. Custom ISOs and cloud-init are supported. Windows is not currently supported but may be available in the future.

Yes, you have full root access to your VPS instances. You can install any software, modify configurations, and customize your environment as needed. SSH key authentication is recommended for security, but password authentication is also available.

Yes, you can upgrade your VPS to a larger plan at any time. Downgrading is also possible but requires creating a snapshot, deploying a new smaller instance, and restoring data. Resizing causes brief downtime (typically under 5 minutes). Your data is preserved during upgrades.

Each VPS gets a public IPv4 address and IPv6 address. Private networking is available within your namespace for instance-to-instance communication (databases, caches). Firewall rules control access. Network speeds up to 10 Gbps are available depending on plan. DDoS protection is included.

We support three high-performance cache engines: Redis 7.2 (industry standard), Valkey 8.0 (Redis fork with enhanced features), and Dragonfly 1.15 (modern, multi-threaded Redis alternative). All engines are API-compatible with Redis, so you can switch between them without code changes.

All cache instances include automatic replicas for high availability. We deploy a replica in the same namespace with automatic failover. If the primary fails, the replica is promoted instantly (typically under 5 seconds). Replication is synchronous within the namespace for zero data loss.

Yes, we support both RDB (point-in-time snapshots) and AOF (append-only file) persistence. You can configure persistence policies via parameter groups. Snapshots can be scheduled (hourly, daily) and are stored separately for disaster recovery. Dragonfly uses its own persistence mechanism for improved performance.

You can configure eviction policies via parameter groups: no-eviction (return errors when full), allkeys-lru (least recently used), allkeys-lfu (least frequently used), volatile-lru, volatile-lfu, allkeys-random, and volatile-random. Dragonfly offers additional modern eviction algorithms.

Real-time monitoring includes: hit/miss ratios, memory usage, connected clients, commands per second, evicted keys, expired keys, network traffic, and replication lag. Historical data is retained for 30 days with 1-minute granularity.

We offer three popular database engines: PostgreSQL (versions 17, 16, 15), MySQL (9.0 LTS, 8.4 LTS, 8.0), and MariaDB (11.6 LTS, 11.4 LTS, 10.11 LTS). All versions are managed, patched, and monitored by us. You get full database access with superuser privileges.

Databases have automated backups enabled by default. We perform daily full backups and continuous WAL/binary log archiving. Point-in-time recovery (PITR) is available for the last 7 days. You can also create manual snapshots at any time. Backups are encrypted and stored redundantly.

Read replicas are available on Medium and Large database plans. Replicas are deployed in the same namespace with streaming replication. They can handle read queries to scale horizontally. Typical replication lag is under 100ms. You can promote a replica to primary if needed for disaster recovery.

Connection limits vary by plan: Small (500 connections), Medium (1000 connections), Large (2000 connections). These are concurrent connection limits. For higher limits, use connection pooling (PgBouncer, ProxySQL) or contact sales for custom plans.

Yes, via parameter groups. You can configure settings like max_connections, shared_buffers, work_mem, maintenance_work_mem, and hundreds of other parameters. Changes are applied automatically to all instances using that parameter group. Some settings may require a restart.

We provide multiple migration methods: (1) pg_dump/mysqldump for smaller databases, (2) pg_restore/mysql restore, (3) Streaming replication for zero-downtime migrations (PostgreSQL), (4) Binary log replication (MySQL/MariaDB). Our support team can assist with large migrations. Custom migration services are available.

DanubeData Object Storage is S3-compatible storage for files, backups, and static assets. Built on MinIO with enterprise-grade features, it works with any S3 client including AWS CLI, boto3, and GUI tools like Cyberduck. Store unlimited objects with automatic redundancy and erasure coding for data protection.

Each bucket costs €3.99/month and includes 1TB of storage and 1TB of egress traffic. Storage overage is €3.85/TB per month (€0.00385/GB). Traffic overage is €0.80/TB. There are no ingress (upload) fees. You only pay for what you use, billed hourly.

Access your storage via any S3-compatible client. We support: (1) AWS CLI with our endpoint, (2) SDKs like boto3 (Python), AWS SDK (JavaScript, Go, PHP), (3) GUI clients like Cyberduck, S3 Browser, and Rclone. Each bucket gets a virtual-host URL (bucket.s3.danubedata.ro) and you authenticate with team access keys.

Full S3 feature set: (1) Versioning - keep multiple versions of objects, (2) Server-side encryption with AES-256 or KMS keys, (3) CORS configuration for web apps, (4) Lifecycle rules to auto-expire objects, (5) Size quotas to limit bucket storage, (6) Public/private access control, (7) Bucket tags for organization. All managed through dashboard or API.

When versioning is enabled, every modification creates a new version of the object instead of overwriting it. You can restore previous versions to recover from accidental deletions or overwrites. Versioned objects are listed separately in the Deleted Files tab. Note: all versions count toward your storage usage.

Yes. Data in transit is encrypted via TLS. At rest, you can enable server-side encryption (SSE-S3) with AES-256 using service-managed keys, or SSE-KMS with customer-managed keys stored in HashiCorp Vault for full key lifecycle control. Encryption is configured per-bucket and applies to all new objects.

Access keys are team-wide credentials for S3 API access. Each key has an Access Key ID and Secret Access Key. Create them in the Security section or Access Keys page. Keys provide access to all buckets in your team. Rotate keys regularly and never share them. You can create multiple keys for different applications.

Yes. Public buckets allow anyone with the object URL to access content without authentication. This is ideal for static website hosting, CDN origins, or serving public assets like images and downloads. Enable public access in bucket Properties. Warning: ensure you do not store sensitive data in public buckets.

No hard limits on total storage - you can store as much as needed. Each bucket can optionally have a size quota (hard limit) to prevent overspending. The base plan includes 1TB; additional storage is billed at €3.85/TB/month. Individual object size limit is 5TB. Our infrastructure uses erasure coding for redundancy.

Lifecycle rules automatically manage objects based on age. Common uses: (1) Delete log files after 30 days, (2) Expire temporary uploads after 24 hours, (3) Remove old backups after 90 days. Rules are configured per-bucket with prefix filters. Perfect for compliance, cost optimization, and automated cleanup.

Yes, SFTP access is available for Object Storage. Connect using your S3 access key ID as username and secret key as password. SFTP is useful for legacy applications, automated file transfers, or users who prefer traditional file transfer methods over S3 APIs.

Parameter groups provide centralized configuration management for databases and caches. Create a parameter group once, apply it to multiple instances. Changes propagate automatically. Perfect for maintaining consistency across dev/staging/prod environments. Version control and rollback are included.

Our advanced firewall system allows IP-based rules (allow/deny specific IPs or CIDR ranges) and instance-to-instance rules (allow VPS to connect to database without exposing to internet). Port-level control is available. Default deny policy ensures zero-trust security. Rules apply instantly.

Comprehensive monitoring is built-in at no extra cost: CPU, memory, disk I/O, network traffic, cache hit rates, database query performance, slow queries, replication lag, and more. 1-minute granularity, 30-day retention.

Snapshots are point-in-time backups of VPS and cache instances. Schedule them (hourly, daily, weekly) or create manually. Restore with one click or clone to new instances. Incremental snapshots save storage costs. Pricing: €0.073/GB/month. No restore fees. Typical restore time: under 60 seconds.

Yes, we provide a comprehensive REST API for all operations: create/delete/resize instances, manage snapshots, configure firewall rules, view metrics, and more. Authentication via API tokens. Full API documentation with examples is available. Terraform provider coming soon.

Multi-layered security: (1) DDoS protection on all instances, (2) Instance-level firewalls with default deny, (3) SSH key authentication, (4) Encrypted snapshots, (5) TLS for all API/dashboard access, (6) 2FA for accounts, (7) Per-tenant namespace isolation in Kubernetes, (8) Regular security updates for managed services.

Yes. Data in transit is encrypted via TLS 1.3. Snapshots are encrypted at rest with AES-256. Database and cache instances store data on encrypted volumes. You can provide your own encryption keys (BYOK) for snapshots. Full disk encryption is available for VPS instances on request.

Yes, DanubeData is fully GDPR compliant. Our infrastructure is EU-based (Falkenstein, Germany). We have a Data Processing Agreement (DPA) available. You can export or delete all data at any time. We process data only as instructed. Privacy by design is built into our platform.

We offer a 99.9% uptime SLA for all managed services (databases, caches). This equates to less than 43 minutes of downtime per month. VPS instances have 99.5% uptime SLA. Downtime is credited automatically. Planned maintenance is scheduled during low-traffic windows with advance notice.

Yes, comprehensive audit logs are available for all actions: instance creation/deletion, firewall changes, parameter group modifications, snapshot operations, login attempts, and API calls. Logs are retained for 90 days and can be exported. Perfect for compliance and forensics.

We offer multiple support channels: (1) Email support (support@danubedata.ro), (2) In-app chat (dashboard), (3) Community Discord, (4) Documentation and guides, (5) Video tutorials. Premium support with dedicated account managers and faster response times is available for enterprise customers.

Standard support: 24 business hours for normal issues, 4 hours for critical issues. Premium support: 4 hours for normal, 1 hour for critical, 24/7 availability. Community channels typically see responses within minutes from our team or other users.

Comprehensive documentation is available at docs.danubedata.ro (coming soon). It includes: getting started guides, API reference, configuration examples, troubleshooting guides, best practices, and video tutorials. Documentation is searchable and regularly updated.

Yes, status.danubedata.ro (coming soon) shows real-time system status, ongoing incidents, and maintenance schedules. You can subscribe to notifications via email, SMS, or Slack. Historical uptime data is published monthly.

We welcome feature requests! Submit them via: (1) In-app feedback button, (2) Community Discord, (3) Email to feedback@danubedata.ro, (4) GitHub discussions (for API/CLI). We review all requests and prioritize based on customer demand and strategic fit.