Product Description
The IBM 5904 PCI-X DDR 1.5GB Cache SAS RAID Adapter (Part Numbers: 42R3965, 44V7627, 44V8622) is a high-performance Serial Attached SCSI (SAS) disk controller designed for IBM Power Systems. This double-wide adapter delivers robust storage solutions with a 1.5GB compressed write cache and 1.6GB compressed read cache, ensuring efficient data management and enhanced reliability. Ideal for enterprise environments, the 5904 supports advanced RAID configurations and high-availability setups for mission-critical applications.
Key Features
-
High-Performance Cache: 1.5GB compressed write cache and 1.6GB compressed read cache for optimized data throughput.
-
RAID Support:
-
AIX/Linux: RAID 0, 5, 6, 10.
-
IBM i: RAID 5, 6 (OS handles mirroring/data spreading).
-
-
Dual-Card Design: Occupies two adjacent PCI-X slots for a stable, double-wide adapter.
-
Auxiliary Write Cache: Dual, concurrently maintainable battery pack preserves cache during power loss.
-
SAS Connectivity: Three mini-SAS 4x connectors for #5886 EXP12S or #5887 EXP24S drawers; one for adapter-to-adapter (AA) SAS cables in high-availability setups.
-
High Availability: Supports dual-controller configurations with SAS X and AA SAS cables (3M #3681, 6M #3682).
-
Drive Support:
-
Up to five #5886 EXP12S drawers (60 SAS bays).
-
Up to two #5887 EXP24S drawers, plus one #5886 drawer.
-
Up to eight CEC drive slots in Power Systems (e.g., Power 550, 750, 560, 570, 770).
-
-
Path Redundancy: Automatic SAS path switching ensures continuous data access during drive failure.
-
No Blind Swap Cassette: Suits Power 550/750 CEC enclosures (see #5906, #5908 for cassette variants).
Technical Specifications
-
Feature Code: 5904
-
CCIN Numbers: 572F (RAID adapter), 575C (write-cache)
-
Form Factor: Double-wide, two PCI-X slots
-
Cache: 1.5GB write, 1.6GB read (compressed)
-
Connectors: Three mini-SAS 4x, one adapter-to-adapter
-
Protocols: SAS Serial SCSI (SSP), Serial Management (SMP)
-
Operating Systems:
-
AIX/Linux: RAID 0, 5, 6, 10
-
IBM i: RAID 5, 6
-
-
VIOS Support: VIOS 2.1.1.0 or later
-
Part Numbers: 42R3965, 44V7627, 44V8622
-
Compatibility: Power Systems (9117-MMA, 8203-E4A, 8204-E8A, 9119-FHA, 8233-E8B, 8261-E4S)
Compatibility
Compatible with:
-
Power 550, 750, 560, 570, 770 CEC (up to six/eight drive slots)
-
Expansion Drawers: #5886 EXP12S, #5887 EXP24S
Note: LPAR requires both PCI-X slots in the same partition. High-availability setups need paired adapters in the same server/partition for IBM i, or separate for AIX/Linux.
