Mission Critical Meets Cloud
Public clouds provide IT organizations with the flexibility and elasticity that are not possible in the traditional data center. Today new enterprise applications can be brought online in hours instead of months. Backend databases are an integral part of many mission critical applications. Ensuring high availability of the databases is a critical challenge in the cloud migration strategy.
FlashGrid Enables Oracle RAC in Azure
FlashGrid Cloud Area Network
FlashGrid Cloud Area Network™ software enables migration of mission-critical applications to the public cloud by bridging the gap between the limited network capabilities that the public clouds provide and the capabilities required for achieving maximum availability. FlashGrid Cloud Area Network™ enables running high-speed clustered applications in public clouds or multi-datacenter environments with the efficiency and control of a Local Area Network.
FlashGrid Storage Fabric turns local drives into shared drives accessible from all nodes in the cluster. The local drives shared via FlashGrid Storage Fabric can be block devices of any type including Premium Storage SSDs, local SSDs, or LVM volumes. The sharing is done at the block level with concurrent access from all nodes.
Each database node has a full copy of user data on its local drives. The FlashGrid Read‑Local™ Technology allows serving all read I/O from the local drives and increases both read and write I/O performance. Read requests avoid the extra network hop, thus reducing the latency and the amount of the network traffic.
High Availability with Multiple Fault Domains
Each Azure cloud region has several fault domains. The fault domains are isolated from each other while providing high speed network connectivity between them. Placing Oracle RAC nodes in separate fault domains provides high availability above the level achievable in a traditional data center.
Azure offers variety of VM sizes with different numbers of CPU cores and different memory sizes to meet the needs of various database workloads. When more resources are needed, the instance types of the database nodes can be easily changed one by one without causing database downtime.
Premium Storage SSDs can provide a single cluster with over 100K IOPS, which is comparable to a dedicated all-flash array.