Storage Medium v4 vs Storage Large v4

Q: What is the difference between the OpenMetal Storage Medium v4 and Storage Large v4?

Both servers share the same chassis, CPU, memory, and network configuration, but differ in drive population: the Storage Medium v4 ships half-populated with 6 HDDs and 2 NVMe drives, while the Storage Large v4 fills all bays with 12 HDDs and 4 NVMe drives.

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The Storage Medium v4 provides 120 TB raw HDD (six 20 TB SATA) and 12.8 TB NVMe cache (two 6.4 TB Micron 7500 MAX). The Storage Large v4 provides 240 TB raw HDD (twelve 20 TB SATA) and 25.6 TB NVMe cache (four 6.4 TB Micron 7500 MAX). Both use dual Intel Xeon Silver 4510 processors (24 cores, 48 threads), 256 GB DDR4-2933 ECC, and 20 Gbps LACP private networking.

The key advantage of starting with the Storage Medium v4 is expandability: 6 open HDD bays and 2 open NVMe bays allow upgrading to the full Storage Large v4 configuration in the same chassis without data migration. This lets organizations start with 120 TB and grow to 240 TB as storage requirements increase, paying for drives incrementally rather than upfront.

Choose the Storage Medium v4 for new Ceph deployments where initial capacity needs are under 120 TB per node and growth is expected. Choose the Storage Large v4 when the workload requires full capacity from day one, such as large-scale archival, media libraries, or data lake storage exceeding 100 TB usable per node.