5583: IBM U320 Scsi RAID W/574f Aux Write Cache.
The IBM 5583 is a Battery-Backed Write Cache pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the BBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.
This part is cataloged in the U.S. Government catalog under NSN 3110-00-198-2827, indicating validated use in U.S. government and defense logistics supply chains.
| material | STEEL OVERALL |
| cone_width | 1.7230 INCHES NOMINAL IN |
| bore_diameter | 2.3750 INCHES NOMINAL IN |
| style_designator | NORMAL ANGLE |
| cone_corner_radius | 0.1400 INCHES NOMINAL IN |
| standard_tolerance_designation | AFBMA CLASS 2 |
| NSN | 3110-00-198-2827 |
| STYLE DESIGNATOR | NORMAL ANGLE |
| CONE CORNER RADIUS | 0.1400 INCHES NOMINAL IN |
| CONE WIDTH | 1.7230 INCHES NOMINAL IN |
| STANDARD TOLERANCE DESIGNATION | AFBMA CLASS 2 |
| BORE DIAMETER | 2.3750 INCHES NOMINAL IN |
| MATERIAL | STEEL OVERALL |