These are high-speed flash drives for IBM Power10 servers. They run on IBM i (the modern name for iSeries and AS/400).
Each drive uses the 2.5-inch U.2 form factor. Capacities range from 800 GB up to 15.3 TB. They connect directly with PCIe Gen4 for very fast data access.
Power10 systems use these NVMe drives for internal storage. You can also add more space with the NED24 NVMe Expansion Drawer. Traditional SAS drives are only for external use.

NVMe flash is the main internal storage on Power10. It gives better speed than older SAS drives.
Specs vary by model and feature code. Here are popular examples for IBM i:
| Feature Code | Capacity | Interface | Endurance | Best For |
|---|---|---|---|---|
| ES5B / ES3A / EKF2 | 800 GB | PCIe Gen4 NVMe U.2 | 1–5 DWPD | Load source and mixed use |
| ES5D / ES3C / EKF4 | 1.6 TB | PCIe Gen4 NVMe U.2 | 1–5 DWPD | High performance |
| ES5F / ES3E | 3.2 TB | PCIe Gen4 NVMe U.2 | 1–5 DWPD | Balanced capacity and speed |
| ES5H / ES3G | 6.4 TB | PCIe Gen4 NVMe U.2 | 1-5 DWPD | Larger capacity needs |
| ECTB | 15.3 TB | PCIe Gen4 NVMe U.2 | ~1 DWPD | High-density storage |
All drives are 2.5-inch U.2 (15 mm height). Sector format is usually 4K with options for IBM i. Typical power use is 10–25 watts per drive.
These NVMe U.2 drives work with IBM Power10 systems running IBM i.
Internal SAS drives are not used on Power10 base systems. Use external EXP24SX drawers if you still need SAS storage.
| Feature | NVMe U.2 (Internal) | SAS (External Only) |
|---|---|---|
| Speed / Latency | Very fast (under 100 μs) | Slower |
| Capacity | Up to 15.3 TB+ per drive | Limited by drawer |
| Best Use | Databases, real-time apps, high IOPS | Legacy or hybrid needs |
| Power and Heat | Lower | Higher |
Data Tech Computer is an IBM Business Partner. We help match the right NVMe drives to your Power10 system for performance and cost. All drives include a 60-day warranty and support IBM maintenance.
Browse the product listings below for current availability and pricing on IBM Power10 NVMe U.2 SSDs.