IBM Power9 Disk Drives - AIX & IBM i

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IBM Power9 HDD, SSD & NVMe Drives – SAS & PCIe Storage for AIX & IBM i

IBM Power9 systems provide a modern, high-performance storage ecosystem for AIX and IBM i workloads, supporting SAS HDDs, enterprise SAS SSDs, and native PCIe NVMe SSDs (via U.2 direct-attach in G-models or dedicated PCIe adapters). Models such as S914 (9009-41A), S922 (9009-22A/22G), S924 (9009-42A/42G), E950, and E980 feature hot-swap SFF-3 (2.5-inch) SAS bays (8–18 internal typical) and EXP24SX expansion drawers. SAS HDDs deliver cost-effective capacity for transactional and archival data, SAS SSDs offer high IOPS and low latency for virtualization/databases, and NVMe SSDs provide ultra-low-latency flash storage (sub-100 μs) for the most demanding applications. All drives support hot-swap, RAID/mirroring (native or VIOS), and are fully qualified for AIX 7.2+ and IBM i 7.3+ / 7.4+ (with NVMe requiring IBM i 7.4 TR1+ or later).

Features

Hot-swap SFF-3 (2.5-inch) SAS carriers standard on internal Power9 bays and EXP24SX drawers
SAS 12 Gb/s interface for HDD & SSD (backplanes with IBM i write cache support #EJ1D/#EJ1M/#EJ1P series)
Native U.2 NVMe direct-attach in G-model backplanes (#EJ1S/#EJ1T/#EJ1U) or via PCIe adapters (#EC6U/#EC6V/#EC6W series)
RAID 0/1/5/6/10 and IBM i mirroring support (integrated controllers or VIOS)
Mixed SAS + NVMe configurations possible (SAS in bays/drawers, NVMe via U.2 or PCIe slots)
Power-loss protection capacitors, firmware alignment, and sector formats optimized for AIX/IBM i (512e/4Kn/4160-byte)
Enterprise endurance ratings on SSD/NVMe (1–10 DWPD classes typical)
PCIe Gen3/Gen4 NVMe support for maximum throughput and lowest latency

Drive Types

SAS HDDs (10K & 15K RPM)

Reliable spinning media for high sequential throughput and cost-effective capacity
Capacities: 283 GB – 1.8 TB (typical #59xx / #ESxx series)
Performance: 10K or 15K RPM, excellent for sequential reads/writes
Ideal for: Traditional AIX/IBM i applications, file systems, journaling, archival data

SAS SSDs (Enterprise & Mainstream Classes)

Flash-based drives for high random IOPS and sub-millisecond latency
Capacities: 387 GB – 7.68 TB+ (typical #ES84 / #ES8P / #ESB9 / #ESMR / #ESND series)
Performance: 100K–600K+ IOPS, 1–10 DWPD endurance ratings
Ideal for: Virtualization, SAP/Oracle/DB2, high-concurrency IBM i partitions, AIX analytics

NVMe SSDs (U.2 direct-attach & PCIe-adapter)

PCIe Gen3/Gen4 protocol for ultra-low latency and massive throughput
Capacities: 800 GB – 15.36 TB+ (U.2 in G-models or #EC6x series adapters)
Performance: Sub-100 μs latency, 200K–1M+ IOPS, multi-GB/s sequential
Ideal for: Load source, high-performance databases, flash-optimized AIX/IBM i apps (requires IBM i 7.4 TR1+)

Technical Specifications

Drive Type | Interface | Capacities (Typical) | RPM / Endurance | Performance Highlights | AIX / IBM i Support | Attachment
SAS HDD | SAS 12 Gb/s | 283 GB – 1.8 TB | 10K / 15K RPM | High sequential | AIX 7.2+, IBM i 7.3+ | SFF-3 internal / EXP24SX
SAS SSD | SAS 12 Gb/s | 387 GB – 7.68 TB+ | N/A (flash) | High random IOPS | AIX 7.2+, IBM i 7.3+ | SFF-3 internal / EXP24SX
NVMe SSD | PCIe Gen3/Gen4 x4/x8 | 800 GB – 15.36 TB+ | N/A (flash) | Sub-100 μs, 200K–1M+ IOPS | AIX 7.2+, IBM i 7.4 TR1+ | U.2 (G-models) or PCIe adapters

Compatibility

Fully compatible with IBM Power9 systems running AIX (7.2+ recommended), IBM i (7.3+ for SAS, 7.4 TR1+ for NVMe), Linux, or VIOS:

Scale-out models: S914 (9009-41A), S922 (9009-22A / 9009-22G), S924 (9009-42A / 9009-42G)
Enterprise models: E950, E980
Expansion: EXP24SX drawers (NVMe requires G-model backplanes (#EJ1S/#EJ1T/#EJ1U) for U.2 direct-attach or PCIe NVMe adapters (#EC6x series); SAS requires compatible backplanes (#EJ1x series) and controllers (#EJ1D/#EJ1M write cache). Consult IBM documentation for exact feature codes, backplane options, and OS levels/PTFs.)