HP DL760 HP ProLiant DL760 Generation 2 Server User Guide - Page 135

Installing Hardware Options, Hot-Pluggable Hot-Upgrading Memory For the hot-upgrade feature to work on the ProLiant DL760 G2 server, the operating system must have driver support. Refer to "Installing HP Drivers and Utilities," in Chapter 8 for details on installing HP software. HP recommends having all DIMMs that will replace existing DIMMs available before beginning this upgrade procedure. An upgrade is replacing smaller size DIMMs with larger size DIMMs. CAUTION: A redundant memory configuration is required when performing Hot Plug RAID Memory functions. • If all five memory cartridges are online and error free, any memory cartridge can be removed. • If one of the five memory cartridges requires attention, only that memory cartridge can be removed. • If two or more memory cartridges require attention and are online (cartridge power LED is illuminated), no cartridge can be removed while the system is online. An audible alarm will sound if any cartridge is unlocked. IMPORTANT: You cannot perform a hot-upgrade of memory if only four memory cartridges are installed. The system must have a redundant memory configuration (five cartridges online and error free) before the hot-upgrade feature will function. 5-20 HP ProLiant DL760 Generation 2 Server User Guide