🔍 Read the full analysis: Read-Only By Design: How A Capacity Ledger Connects To SAP Without Writing To It on Rymvard
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TL;DR
Rymvard says its early-access capacity ledger connects to SAP using read-only interfaces, including four permitted SAP Host Agent operations and six fixed HANA monitoring queries. The product has been tested against a simulator representing 200 hosts, not a customer estate; no customer deployment or outcomes are reported.
Rymvard says its early-access capacity ledger for data centers connects to SAP systems through read-only interfaces and does not write to them. The company describes a restricted collection design using SAP Host Agent operations, HANA monitoring queries and landscape tools, a relevant detail for SAP teams weighing how third-party software can access production environments.
At each site, Rymvard’s collector communicates with the SAP Host Agent over HTTPS and allows only four read operations: ListInstances, ListDatabases, GetDatabaseStatus and GetComputerSystem. Rymvard says the collector refuses other operations. A separate component reads HANA monitoring views using a fixed list of six SELECT queries, as a monitoring user over TLS. The company sets a 60-second limit per system and a maximum of eight systems queried at a time.
Rymvard also says it reads landscape information from SAP Focused Run, ServiceNow, SAP Solution Manager through its System Landscape Directory, and SAP LaMa, using their read-only interfaces. The intended result is a ledger of systems, customers and environments assembled from existing records and observed infrastructure. Rymvard says data records remain in the country where they were measured, while customer names are visible only to planners and administrators.
The company says records are matched from evidence rather than inferred assignments: an instance is linked to the system already running on its host. A system not declared by an organization is recorded as a development system with 0.5 confidence and reported, rather than assigned to a customer. Values that a source can only guess do not overwrite declared values. An instance no longer listed by the Host Agent on its host is removed from the ledger.
Read-Only Access for SAP Teams
Production SAP environments can support business-critical workloads, so permission to change system data is a major operational concern. Rymvard’s described approach is to gather information for capacity planning while limiting access to specified read operations. That design may make the product easier for cautious SAP basis teams to evaluate, though the stated restrictions are a description of Rymvard’s implementation, not an independent security certification.
The approach also matters for how capacity records are interpreted. Explicitly marking an undeclared system as a development system with a confidence value, and declining to guess its customer, makes uncertainty visible instead of presenting an inferred relationship as confirmed. The ledger’s usefulness will still depend on the quality and coverage of the underlying SAP and landscape data.
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Simulator Testing, Not Customer Proof
Rymvard describes itself as a capacity ledger for data centers and says it has no SAP system of its own. It built and tested the connection against a simulator that responds like the SAP Host Agent and HANA monitoring views for a landscape of 200 hosts. The company says the product is running in early access and that the screens shown are from the product on an illustrative example estate.
That qualification sets the limits of what has been demonstrated publicly: simulator testing is not the same as operating across a customer’s live estate. Rymvard says the scenarios are illustrative and do not imply a customer, site or outcome. It has not published prices, saying pricing is agreed with early-access partners.
““Nothing is ever written to SAP.””
— Rymvard
read-only SAP landscape management software
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Live Deployment Evidence Still Missing
Rymvard has not identified a customer using the product or provided results from a live SAP deployment. It also has not disclosed an independent security review, specific hosting arrangements, or technical details beyond the stated interfaces, query limits and access rules. The simulator’s 200-host landscape describes its test setup; it does not establish performance or reliability across a customer environment of that size.
Other practical questions remain open, including how quickly the ledger reflects changes, how it handles unavailable or inconsistent data sources, and what controls customers can inspect or configure. Rymvard’s description does not provide measured capacity-planning outcomes, pricing, or a timetable for moving beyond early access.
SAP landscape data collection tools
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Early-Access Evaluation Comes Next
The next evidence will need to come from the product’s early-access use: whether partner organizations can connect it to their SAP landscapes under the stated restrictions, and how the ledger performs with real system data. Rymvard has not announced a broader release date or named an early-access customer.
The company says pricing is arranged with early-access partners and invites inquiries through contact@rymvard.com. Until it publishes customer experience or further technical validation, the read-only controls and simulator results remain company-reported details rather than proof of performance in production.
Source: Rymvard
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Key Questions
Does Rymvard write data to SAP?
Rymvard says it does not write to SAP. Its described connection permits four SAP Host Agent read operations and uses read-only interfaces for other landscape tools.
How does the product read HANA monitoring data?
Rymvard says a separate component runs a fixed list of six SELECT queries against HANA monitoring views, using a monitoring user over TLS. It sets a 60-second limit per system and queries no more than eight systems at a time.
Has Rymvard been tested in a customer’s SAP environment?
No customer deployment is identified. Rymvard says it tested the connection against a simulator representing a 200-host landscape and describes the displayed estate as illustrative.
How does the ledger handle an undeclared system?
Rymvard says it records an undeclared system as a development system with 0.5 confidence and reports it, rather than guessing which customer it belongs to.
Is Rymvard available, and what does it cost?
The product is in early access and is running, according to the company. Rymvard has not published prices; it says pricing is agreed with early-access partners.
Source: Rymvard
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