SAP system deployment scenarios
SAP system startup and shutdown, including virtual hosts
SAP production system copies are created for a variety of reasons, including: - Generating a new non-production system for short- or long-term use - Updating an existing non-production system An SAP system copy is called homogeneous if the source and target operating and database systems are identical. If this is not the case, the system copy is considered heterogeneous. Heterogeneous system copies or platform migrations are not supported by the HP StorageWorks System Copy software for SAP and are therefore not discussed further in this document. In addition, this document deals exclusively with system copies for non-production target systems. Overview of a homogeneous system copy Figure 1 shows copies of an SAP production system that are created for non-production systems. Some copies are short-term (ad hoc) in nature, while others are intended for long-term use. Note that when a long-term system is created from a system copy, a system copy may be needed for updates later in the system's life cycle. This adds the latest transactional data from the original production system. Given their particular importance, this document focuses on scenarios with system copies created for updates. Figure 1: Overview of scenarios with homogeneous SAP system copies Scenario with system copies for updates In order to meet constantly changing business requirements, a production system must be continuously developed and adapted after the initial installation. To do this, you need development, consolidation, and quality assurance (QA) systems that can provide the production system with the appropriate updates as SAP transports.
Table splitting requires 2 tools: R3ta, which determines the WHERE conditions used to access subsets of a table. TableSplitter, which splits the WHERE-conditions determined by R3ta into packages with one or more subsets.
Consistency of database disk blocks - stopping I/O activities or executing DATABASE BEGIN ONLINE BACKUP command, flushing cache, etc.
An SAP system copy is not done in an hour. Due to the large amount of data in an SAP system, the individual steps can take a long time to complete. The export and the import do not always run without errors. Often one is held up by troubleshooting. Of course, the target system must be prepared before the actual copy can be performed: Setting up the server, installing the operating system and database software, downloading and copying the installation media. During the export, the source system cannot be used. Therefore, this task must be planned well and in advance.
An SAP system copy is a process in which an exact copy of an existing SAP system is created. This copy can be used to run tests, perform development, or back up the system.
If you have used "Shortcut for SAP Systems" to save system-specific tables before the system refresh, several manual steps can be omitted - the data can be restored by restoring the data saved before the system copy.
Checklist for preliminary work: Comparison of database sizes (target system must be the same or larger), comparison of database versions, kernel, host agent (ideally the same software version), dump of kernel files (export via SAPINST), saves download via SWDC, compile RFC connection passwords, inform third-party system administrators, provide memory, hard disk on the system for database and software import.
Memory-based copy operation based on snapshots of non-volatile Compute Engine memory.