Chipkill memory

Anyone familiar with this type of memory? Is it an option, or do certain systems mandate it’s use?

I designed one for the Alpha EV7 (actually, it was DIMM-kill - basically RAID for a DIMM). This is not uncommon in very high and mainframes and server. I suspect the term was coined by IBM.

A bit of googling comfirms:

A memory module technology from IBM that, similar to RAID 3 for hard disks, spreads the bits across multiple memory chips

Chipkill is IBM’s trademark for a form of advanced error checking and correcting computer memory technology that protects computer memory systems from any single memory chip failure as well as multi-bit errors from any portion of a single memory chip. Wikipedia