IBM 46K3665 server / storage / networking hardware Server Hardware / Parts

The IBM 46K3665 is a distributed converter assembly, marked DCA_MR on the supplier record. DCAs are the local DC to DC power stages inside IBM System z and large Power frames, taking the regulated bulk supply and producing the voltages required at a specific book, cage or I/O drawer. They are hot pluggable and installed in redundant sets so that a single failure does not bring the drawer down. Fit is tied to the drawer and machine type rather than being universal.

IBM builds its large frame systems, the System z mainframes and the high end Power servers that share their packaging, around a bulk power subsystem rather than around individual power supplies. Mains comes in at the bulk power enclosure, is regulated and controlled there, and is distributed through the frame to converter assemblies at each book and drawer. Blowers, motor drive assemblies and, on the liquid cooled models, refrigeration or water cooling units hold the processor complex in its thermal envelope. Every one of those is a field replaceable unit.

Give us the system details or a picture of the part label and we will physically verify the match before despatch. Tech-Star (UK-based, shipped worldwide) holds IBM equipment for data centre maintenance work. Please contact our sales team for current availability and pricing.