FlashGrid Storage Fabric

Software-defined storage for Oracle RAC clusters. Forget storage arrays.


FlashGrid Storage Fabric software enables high-speed shared storage for Oracle clusters in a variety of infrastructure environments including bare-metal servers, private and public clouds, virtual machines, or extended distance clusters.

FlashGrid Storage Fabric

FlashGrid Storage Fabric
for extended distance (stretched) clusters

FlashGrid Storage Fabric is the simplest and the highest performance storage solution for extended distance (a.k.a. stretched) Oracle RAC clusters.

Extended distance clusters provide a local disaster recovery solution across two locations with high availability characteristics of a local cluster. Unlike replication techniques, in extended distance clusters the data is mirrored by ASM synchronously across the two locations. At any given time all locations have exact full copy of the data.

Extended distance ASM clusters can be configured with RAC, RAC One Node, SE2 HA, or single-instance databases.


The added latency on direct long-distance connections is approximately 0.005 ms/km. For a 100 km distance this produces 0.5 ms latency, which is still 10X lower than a typical latency of a traditional HDD based storage. Distances up to 100 km are acceptable for most OLTP loads. More careful testing of the target application is recommended for distances over 100 km. Dedicated 10 GbE connectivity with no routing is recommended between the sites.

The smallest storage configuration can consist of one NVMe SSD in each of the database nodes. Additional SSDs can increase capacity, performance, and also improve HA.

The solution can be deployed on bare-metal or on virtual machines.

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