FlashGrid offers HA database architecture that allows full control and the flexibility to meet future database and infrastructure requirements:
FlashGrid enables running Oracle RAC in the cloud by adding shared storage and advanced network capabilities. Even if you have been using only single-instance databases, consider using the FlashGrid/RAC solution to mitigate the lack of control over the compute and storage resources and to increase database availability. Additionally, FlashGrid Cloud Provisioning fully automates the process of configuring Oracle RAC clusters and allows creating a cluster in AWS or Azure cloud in less than two hours.
Public cloud uptime SLA covers only VM instance uptime. It does not cover software or OS patching, crashes, or corruption. Oracle RAC provides true database high availability with active-active redundancy between two or more database node VMs. If zero RTO and zero RPO are your targets then you should look at running Oracle RAC with FlashGrid.
Compared to a single-instance database, a RAC database has overhead for communication and data mirroring between the nodes. However, clustering adds CPU, memory, and disk resources that speed up parallel operations. The FlashGrid software itself consumes negligible amount of system resources.
Testing performed at FlashGrid and by our customers demonstrated performance levels matching or exceeding performance of high-end on-premises systems. See Performance Considerations section in the whitepapers for AWS and Azure. FlashGrid engineers can help you analyze your application performance needs and size the database cluster accordingly.
The FlashGrid architecture does not impose strict limits on the number of RAC nodes. In most cases we recommend two or three nodes. To reduce network overhead we recommend increasing the size of the before adding more nodes. 2+2 redundancy across two availability zones may be used for extra HA. Please contact us if you are interested in a configuration with 4+ nodes.
The migration process is similar to migrating a database between two datacenters. Depending on the size of the database and tolerable downtime, you can use on of the regular migration tools, such as RMAN backup/restore, export/import, or DataGuard replication.
FlashGrid software is available at AWS Government Cloud Marketplace and at Azure Government Cloud Marketplace. Please note that in Azure Government Cloud the technical support subscription must be purchased directly from FlashGrid or from a FlashGrid partner. It is priced per database node per year.