| Workload Type | X7-2 | X8M-2 | Improvement | | --- | --- | --- | --- | | | 150,000 IOPS | 1,200,000 IOPS | 8x | | Average Read Latency | 120 µs | 19 µs | 6.3x | | Redo Write Latency | 110 µs | 25 µs | 4.4x | | Data Warehousing (Smart Scan) | 12 GB/s | 48 GB/s (per rack) | 4x | | SQL*Net Messages (Small packet) | 300k msg/sec | 2.5M msg/sec | 8.3x | All numbers are approximate and dependent on configuration. Real-world results vary. Key takeaway: The X8M-2 eliminates the I/O bottleneck entirely for most traditional databases, moving the bottleneck to CPU or application logic. 6. Comparing X8M-2 vs. Previous Generations | Feature | Exadata X6-2 | Exadata X7-2 | Exadata X8M-2 | | --- | --- | --- | --- | | Network Fabric | InfiniBand (56 Gb) | InfiniBand (100 Gb) | RoCE (100 Gb) | | Storage Media | SAS Flash + HDD | NVMe Flash | PMEM + NVMe Flash | | Max Database Server DRAM | 768 GB | 768 GB | 1.5 TB | | Storage Server Cache | DRAM + Flashcache | DRAM + Flashcache | DRAM + PMEM + Flash | | Read Latency (Storage) | ~250 µs | ~150 µs | ~19 µs | | Support for NVMe-oF | No | No | Yes |

| Feature | Specification | | --- | --- | | | 2-socket Intel Xeon (Cascade Lake) | | Storage Servers | 2-socket Intel Xeon with PMEM and NVMe flash | | Max Rack Configuration | 18 database servers + 18 storage servers (Full Rack) | | Key Innovation | Persistent Memory (PMEM) as extended cache / memory tier | | Network | RoCE (100 Gbps) for low-latency RDMA | | Maximum DRAM (per DB server) | 1.5 TB | | Maximum PMEM (per storage cell) | 12.8 TB | | Use Cases | High-throughput OLTP, AI/ML data pipelines, consolidated databases | 2. Hardware Specifications (The “Datasheet” Core) This section mimics a traditional datasheet layout. 2.1 Database Server (X8-2) The database server handles SQL processing and transaction management.

This article is for informational purposes only. Oracle, Exadata, and Java are registered trademarks of Oracle Corporation. All performance data presented is estimated based on publicly available test results.