"HMC" is for Hardware Monitoring Console with LPARs. It is IBM's hardware management console for PowerPC system running AIX.
LPARs are AIX's virtualization technology similar to Solaris Zones. It is similar to Foglight APM but requires a different cartridge.
HMC cart is available now and is offered as a separate cartridge to purchase.
For more information, contact your Sales representative to guide you thru the process of acquiring the HMC cartridge.