
1U entry-level library built for simple deployments.
View details >Qualstar · Modern Cold Tier
Standards-based LTO tape libraries built to run the modern cold tier - offline recovery, energy-aware archives, and modular scale from TB to EB.
Featured platform


Q1000+Powered by Orion - now available. Standards-based LTO, no vendor lock-in, rack-scale archive automation.
Product lineup
Library sizing wizard
Use this quick model to estimate the right starting class. Final sizing should be validated with workload and software profile details.
Suggested class
Q40
Drive count range: 4-12 drives
Fits expanding archive programs that need modular scaling.
Inputs captured: 7 year retention, 20 TB/day ingest, 12 hour restore target.
Energy and TCO estimator
This estimator offers relative planning guidance. Tape media uses no power at rest, while disk-based cold tiers remain powered.
Relative planning output
Estimated annual disk energy cost for current cold tier: $7,358
Even smaller archives can improve resilience and power posture with an offline tier for long-retention datasets.
This is a directional model, not a savings guarantee.
Use-case fit

Cyber Recovery Vault
Add an offline recovery layer beyond network reach to support ransomware recovery planning.
Architecture snippet: Production backups replicate to tape policy tier, then export vaulted copies for physical separation and controlled restore workflows.
Recommended classes: Q24, Q40, Q80

AI/HPC Cold Tier
Retain training datasets, simulation output, and reproducibility archives without keeping all data on always-on storage.
Architecture snippet: Warm disk tier handles active runs while automated tape libraries hold long-horizon datasets with scheduled ingest windows.
Recommended classes: Q40, Q80, Q1000+

Media Preservation
Preserve camera masters, mezzanine files, and restoration assets with predictable archive operations.
Architecture snippet: File workflows move completed projects into LTFS-addressable tape pools with metadata indexing and periodic integrity checks.
Recommended classes: Q24, Q40, Q80

Regulatory Retention
Support governance policies that require multi-year retention, auditability, and controlled access.
Architecture snippet: Policy-based writes use WORM-capable media profiles, partitioned libraries, and lifecycle reporting for compliance programs.
Recommended classes: Q8, Q24, Q40
Scale proof
LTO-10 media class
30TB native / up to 75TB compressed
Q1000+Powered by Orion density
44.6 PB native per 48U rack
Q series path
Q8 and Q24 through Q40, Q80, and Q1000+Powered by Orion
Expansion model
Start small, expand drive counts and slots as retention grows
Integration proof
Qualstar deployments support standards-based LTO operations with remote management, automation controls, and Ethernet-oriented integration paths for distributed environments.