Product Description
IBM EJ1M Expanded Function Storage Backplane – 12 SFF-3 Bays + RDX Bay + Opt Ext SAS Port (CCIN 57D8, P/N 01JC773)
The IBM EJ1M is an advanced internal storage backplane assembly for IBM Power Systems servers, providing 12 hot-plug 2.5-inch SFF-3 SAS/SATA bays, one RDX removable disk bay, and an optional external SAS port for additional expansion. This backplane supports high-performance, flexible storage configurations with RAID 0/1/5/6/10 and is ideal for AIX, IBM i, Linux, and VIOS environments requiring internal drive density plus removable media or external SAS connectivity on Power8 and select Power9 systems.
High-Performance Storage Connectivity
- 12 SFF-3 Bays: Supports 12 SAS HDDs or SSDs with hot-plug.
- RDX Bay: Accommodates removable media like tape or DVD.
- Dual 57D8 Controllers: Integrated 6Gb SAS RAID with 1.8GB cache.
- Write Cache: Up to 7.2GB capacity with compression, flash-protected.
- RAID Support: RAID-0, RAID-5, RAID-6, RAID-10, RAID-5T2, RAID-6T2, RAID-10T2.
- Optional EJ0W Ports: Enables external SAS for EXP24S/EXP24SX drawers.
- 60-Day Warranty: Ensures reliability and support.
- Part Number: 01DH486, for precise compatibility.
- CCIN: 57D8, unique identifier for this backplane.
Technical Specifications
- Part Number: 01DH486
- Feature Code: EJ1M
- CCIN: 57D8
- Bays: 12 SFF-3 SAS, 1 RDX
- Controllers: Dual 57D8 6Gb SAS RAID with 1.8GB write cache
- RAID Levels: RAID-0, RAID-5, RAID-6, RAID-10, RAID-5T2, RAID-6T2, RAID-10T2
- External Ports: Optional EJ0W for EXP24S/EXP24SX (1 PCIe x8 slot)
- Form Factor: SFF-3 backplane for Power9 system units
- Supported Systems: 9009-41A, 9009-42A, 9223-42H
System Compatibility
The IBM EJ1M backplane (01DH486, CCIN 57D8) requires SFF-3 bays in Power9 system units and specific operating systems for high-performance storage operations.
- Supported Systems:
- Power9: 9009-41A (Power S914), 9009-42A (Power S924), 9223-42H (Power H924)
- Operating System: IBM i V7R3 or later; AIX 7.2 or later; Linux RHEL 7.6, SLES 12 SP4, or later; VIOS.
- Drive Requirements: Supports 5xx and 4k byte sector HDDs/SSDs; no mixing in same RAID array.
- Restrictions:
- Fits only SFF-3 SAS bays in Power9 system units.
- Does not support split backplane; use EJ1C or EJ1E for split configurations.
- EJ0W external SAS ports require 1 PCIe x8 slot, ordered separately.
- Available only in refurbished condition.
