Proven at 56K records per second
Where do you want your data?
VirtualZ offers four purpose-built, no-code products to modernize your data on your terms.
“I want my enterprise data replicated everywhere, transformed and on demand.”
PropelZ™ moves data from any source to any destination — cloud, databases, analytics, AI, enterprise applications, mainframes, and more — without ETL scripting, CDC log-tailing, or custom pipelines. Using no-code mappings, PropelZ delivers data ready for immediate use, on demand or on a schedule. From modern enterprise systems to VSAM, sequential files, GDGs, tape, and DB2, PropelZ gets your data where it needs to be. Any data. Any platform. No code.
“I want my mainframe files in the cloud, used by my mainframe apps as if they were local.”
FlowZ™ is no-code, file-based cloud storage for mainframe applications. z/OS writes directly to AWS S3, Azure Blob, or Google Cloud Storage as if it were a local device — and existing mainframe applications read and write that cloud data without a recompile or rewrite. Other apps on any platform can access that same cloud storage independently. No disk emulation. No pipeline to build. No specialized skills required.
“I want to keep my data on the mainframe and let cloud apps read and write it live.”
Lozen™ gives cloud and distributed applications real-time, read-write access to live mainframe data — without moving it, copying it, or replicating it. Data stays on z/OS as the single source of truth, presented to consuming applications as native NFS. AI models, analytics platforms, and hybrid-cloud apps work with continuously up-to-date data, and any writes flow straight back to the mainframe.
“I want to extend mainframe storage to the cloud or on-prem.”
Zaac™ presents Amazon S3, Azure Blob, Google Cloud Storage, and SAN as native z/OS disk and tape devices — replacing hardware procurement, VTL systems, and storage virtualization layers. Every mainframe application runs unchanged, with no rewrite, recompile, or reconfiguration. Capacity is elastic and on-demand. No code. No application changes. Supports disk and tape replacement, including DB2 databases hosted on cloud storage.
Why VirtualZ
Your most valuable enterprise data isn’t in a data lake. It’s locked in mainframes, enterprise systems, and tape archives, out of reach for the AI models, analytics tools, and applications that need it.
With VirtualZ, your mainframe and the cloud work as one. Your data is ready wherever and however you need it. No code. No custom pipelines. No application changes.
Every data source, ready to use
VirtualZ connects to mainframes, distributed systems, cloud platforms, and legacy tape archives — every major enterprise data source, ready to use.
Deploy in hours, not months
Every VirtualZ product is no-code: install and run, with no homegrown pipelines to build, no custom code to write, and nothing to rebuild on the systems that consume your data.
Distinguished by design
VirtualZ was built by a team of Distinguished Engineers, IBM Champions, and patent holders who designed the mainframe software, security, and cloud platforms the industry runs on — now connecting IBM Z to the cloud and the AI era.
A portfolio for all your data needs
Replicate data to any target with PropelZ, store mainframe files in cloud object storage with FlowZ, access it live in place with Lozen, or use cloud and SAN as native z/OS disk and tape with Zaac — no forced movement, no forced migration.
Our patented software enables faster AI, analytics, and modernization initiatives — securely, intelligently, and without disrupting your existing systems.
Explore how VirtualZ can help you
Power AI models with trusted enterprise data
Streamline analytics and reporting across hybrid environments
Extend observability across the entire enterprise infrastructure
Enable modern applications and workflows with seamless access to enterprise data
Make archived data and storage fully available for AI, compliance, and innovation initiatives
Extend mainframe storage to the cloud — elastic, on-demand capacity without hardware procurement
Not sure where to start?
Frequently Asked Questions
What is VirtualZ Computing?
VirtualZ Computing is a no-code enterprise data integration and storage company. It offers four purpose-built products (PropelZ, FlowZ, Lozen, and Zaac) that enable enterprises to move, store, and access data live, and extend your storage to the cloud — without writing code, building custom pipelines, or application changes. VirtualZ connects the IBM Z mainframe and the cloud in both directions — mainframe applications reach cloud data, and cloud and distributed applications reach mainframe data — so data is ready to use wherever it’s needed.
Do I have to write code?
No. Every VirtualZ product is no-code. You install, connect, and run — there’s nothing to install, write, or maintain on the receiving platform, unlike pipeline tools that push the work to the cloud side.
Do I have to move my data?
No, only if you want to. Move it to another platform (PropelZ), store mainframe files in cloud object storage (FlowZ), access it live on the mainframe without moving or copying it (Lozen), or run cloud and SAN as native z/OS disk and tape so the mainframe treats it as local storage (Zaac) — whichever fits the workload. And if your use case calls for it, PropelZ can write results back to a z/OS dataset — the same any-to-any movement, run again pointed at z/OS as the target.
Is this an ETL tool?
VirtualZ offers no-code ETL — PropelZ replicates and transforms enterprise data to any target without homegrown pipelines. But the portfolio goes further: you can also store mainframe files in cloud object storage (FlowZ), access data live in place (Lozen), or run cloud and SAN as native mainframe storage (Zaac). ETL is one option, not the whole story.
Is this change data capture (CDC)?
No, PropelZ is a modern alternative to CDC. Rather than tailing logs to track row-level changes, PropelZ reads source data directly — delivering high-volume, real-time movement without the fragility and overhead of a traditional CDC pipeline.
What platforms does VirtualZ install on?
VirtualZ products install and run natively on IBM Z (z/OS), and there’s nothing to install, write, or maintain on the receiving platform — no agents or pipeline components on the cloud or distributed side. PropelZ is broadly multiplatform: it runs on z/OS, Linux, Windows, macOS, UNIX, IBM i (AS/400), VSE, VM, and any Java-enabled platform, so you can extract and process data wherever it lives — on the mainframe or off. The cloud and distributed apps that consume your data connect through standard interfaces — NFS, SMB, SFTP, JDBC, and cloud object storage on AWS S3, Azure Blob, and Google Cloud — with no VirtualZ code required on the client side. Our patented software is zIIP-eligible, so eligible work runs on specialty processors to contain MIPS costs.
What data sources and targets do you support?
VirtualZ reads and writes a wide range of mainframe and non-mainframe data. Read and write sources and targets include VSAM (KSDS, RRDS, ESDS), QSAM and sequential files including tape and GDG, PDS and PDSE, DB2, non-mainframe JDBC databases, and cloud object storage on AWS S3, Azure Blob, and Google Cloud Storage, plus NFS, SMB, and SFTP. Read-only sources include z/OS management data (SMF) and z/OS logs and alerts (OPERLOG). With PropelZ, z/OS can be the target just as easily as the source — run it again to write results back to a mainframe dataset when the use case calls for it.
What are the most common use cases?
VirtualZ is most often used to populate cloud data warehouses such as Snowflake, Databricks, Redshift, and BigQuery; power analytics and operational reporting; share application data across systems; modernize mainframe applications without rewriting them; replace homegrown ETL pipelines; migrate tape to cloud storage; and feed AI models and analytics platforms in real time or bulk.
Can I feed AI models and analytics platforms?
Yes. VirtualZ delivers enterprise data, including mainframes, to AI models, LLMs, analytics platforms, cloud data warehouses, and business applications, in real time or in bulk. Whether the data stays on z/OS for live access or moves to the cloud, it lands ready to use — with no code and no homegrown pipelines.
How fast is it?
VirtualZ is built for production performance at enterprise scale, and what “fast” means depends on the job. For bulk data movement, PropelZ is proven at 56,000 records per second, mainframe to cloud. FlowZ stores mainframe files in cloud object storage at your available bandwidth, Lozen provides real-time read-write access with no copy step, and Zaac serves cloud and SAN as native z/OS storage at device speed. Whether you move data in bulk, use it live, or run it as storage, performance scales with your environment.
How does it compare on cost?
VirtualZ has a lower total cost of ownership than traditional pipeline approaches. There are no multi-component pipeline stacks to procure, license, and maintain — VirtualZ runs as a single product where your data already lives. VirtualZ solutions are also zIIP-eligible, which offloads eligible work from general-purpose processors, reduces mainframe CPU consumption, and contains MIPS costs.
Can mainframe applications use cloud storage without application changes?
Yes. Zaac™ presents cloud and SAN storage as native z/OS disk and tape — every application reads and writes exactly as it always has, with no code changes required. Capacity scales on demand, with no hardware procurement cycle and no storage-virtualization layer to manage.
What about security and compliance?
VirtualZ works within your existing mainframe security, not around it. Every product integrates with your z/OS security package — IBM RACF, Broadcom ACF2, or Broadcom Top Secret — so your data stays governed by the controls, policies, and audit trails you already use. Access runs in the connected user’s security context: no one reaches data through VirtualZ that they couldn’t reach by logging in directly. With no separate security model and no duplicate copy of your data in a new platform, your attack surface and compliance scope stay essentially unchanged.
News & Resources
Discover the latest blogs, insights, and updates on AI-ready data access and modernization.
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How to Move VSAM Data to PostgreSQL at 56,000 Records per Second — No Code, No CDC (PropelZ 2.0)
56,000 records a second. Measured, not modeled. That’s PropelZ moving 60.9...
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FlowZ
Lozen
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Ready to put your data to work?
Schedule a 30-minute briefing, and we’ll show you exactly how VirtualZ connects your mainframe data to the cloud, AI, and analytics tools your business runs on — in your own environment.