The Exadata X11M system family contains the following High Capacity (HC) storage server offerings:
- Exadata Storage Server X11M HC is the premium high capacity storage server, blending extremely high performance and storage capacity. Each storage server includes the following hardware components:
- Four 6.8 TB performance-optimized flash devices
- Twelve 22 TB hard disk drives (HDDs)
- 1.5 TB of system memory (high-performance DDR5 DRAM), with 1.25 TB dedicated to Exadata RDMA Memory Cache (XRMEM cache). XRMEM cache supports data access using Remote Direct Memory Access (RDMA) to deliver high performance with extremely low latency.
- Exadata Storage Server X11M-Z HC enables Exadata for smaller applications and databases. Each storage server includes the following hardware components:
- Two 6.8 TB performance-optimized flash devices
- Six 22 TB hard disk drives (HDDs)
- 768 GB of system memory (high-performance DDR5 DRAM), with 512 GB dedicated to XRMEM cache.
Note: All specifications are for Exadata X11M storage servers. See the related resources for more details and information about other models.
Each storage server runs Oracle Exadata System Software to process data at the storage level and pass on only what is needed to the database servers.
On HC storage servers, the flash devices primarily support Exadata Smart Flash Cache, which automatically caches frequently used data in high-performance flash memory. Also, Exadata Smart Flash Log uses a small portion of flash memory as temporary storage to reduce latency and increase throughput for redo log writes.
Starting with Exadata System Software release 24.1, Oracle Exadata Exascale transforms Exadata storage management by decoupling Oracle Database and GI clusters from the underlying Exadata storage servers. Exascale software services manage pools of storage that span the fleet of Exadata storage servers and service multiple users and database server clusters.