What is STACKIT Block Storage?
STACKIT Block Storage is a block storage service that provides persistent volumes for virtual machines. The service offers multiple performance classes, from the cost-efficient Premium-Capacity tier to Premium-Performance tiers with high IOPS and throughput. Volumes can be sized from 1 GB to 10 TB. All data is stored exclusively in German data centers and encrypted with AES-256.
Core Features
- Multiple performance classes: Premium-Performance tiers (up to 60,000 IOPS, 1,500 MB/s throughput) and the capacity-oriented Premium-Capacity class
- Volume sizes from 1 GB to 10 TB
- Snapshots plus full and incremental backups for volumes
- AES-256 encryption at rest, transparent for all operations
- Self-service via portal or automation via the STACKIT IaaS API
- Distribution across multiple availability zones for redundancy
Typical Use Cases
Production databases: PostgreSQL, MySQL, and MongoDB benefit from the Premium-Performance tiers with low latency.
SAP workloads: Higher performance tiers deliver the throughput needed for demanding database workloads.
Kubernetes Persistent Volumes: Container workloads on STACKIT Kubernetes Engine use Block Storage as the backend for persistent data.
Boot volumes: Foundation for the operating system disk of STACKIT Compute Engine instances.
Benefits
- Full GDPR compliance in German data centers
- Flexible choice among multiple performance and capacity classes
- Volumes are persistent independent of the VM lifecycle
- Pay-as-you-go billing with no upfront investment
Integration with innFactory
As an official STACKIT partner, innFactory supports you with Block Storage: choosing the right performance class, architecture, migration, operations, and cost optimization.
Available Tiers & Options
Premium-Performance
- Multiple performance tiers (e.g. up to 60,000 IOPS, 1,500 MB/s)
- Low latency
- Suited for database workloads
- Higher cost depending on the chosen performance tier
Premium-Capacity
- Cost-efficient for capacity-oriented workloads
- Lower performance than Premium-Performance tiers
Typical Use Cases
Technical Specifications
Frequently Asked Questions
Can I resize volumes without downtime?
A volume can be expanded as long as it is not attached to any instance. To expand it while in use, you therefore need to detach it first. Shrinking a volume is not supported.
What performance classes are available?
STACKIT offers several Premium-Performance tiers with different IOPS and throughput levels, plus a more cost-efficient Premium-Capacity class. The highest performance tier delivers up to 60,000 IOPS and 1,500 MB/s throughput.
Are volumes automatically backed up?
No. Use snapshots or STACKIT Backup Storage for regular full and incremental backups of your volumes.
How is billing handled?
Billing is usage-based (pay-as-you-go) according to capacity used and the selected performance class, billed hourly.
How is the data encrypted?
All volumes are encrypted by default with AES-256 at rest, transparently, without requiring any application changes.
Note: All product information on this page has been compiled with care, but is provided without guarantee and may be outdated or incomplete. Cloud services evolve rapidly — features, pricing, SLAs, and availability change frequently. Authoritative and up-to-date information can only be found on the official product page of STACKIT (official documentation). This page does not represent an offer by STACKIT.
