HP DL740 hot plug RAID memory technology for fault tolerance and scalability - Page 9

hot plug RAID memory technology for fault tolerance and scalability ease-of-use capabilities conclusion feedback Hot-add capability allows a user to scale up a computer system as needed by adding extra DIMMs. Hot-add capability requires support from the operating system to recognize the additional memory. HP worked with operating system vendors to ensure that this capability is supported in current and future releases. Hot Plug RAID Memory also enables several ease-of-use features. The registers and logic in Hot Plug RAID Memory permit software to take action when certain situations arise. For example, a register can collect information on memory errors, and software can be programmed to direct the system to issue warnings and initiate changes in status indicators. Light-emitting diodes (LEDs), locks, and alarms can be used to indicate good or bad DIMMs and to make management of Hot Plug RAID Memory quite easy and intuitive. Memory error detection and correction technology has not evolved as rapidly as other technologies used in today's enterprise servers. While ECC provides good detection and single-bit correction capabilities, today's systems with more than 1 GB of memory require additional fault-tolerant memory technology to provide a consistent level of protection. Hot Plug RAID Memory technology answers the need for additional data protection. Using traditional RAID technology implemented at the chipset level, Hot Plug RAID Memory provides unprecedented levels of protection while increasing the availability and scalability of the memory subsystem. Because the Hot Plug RAID Memory solution uses industry-standard DIMMs, it provides a fault-tolerant memory form factor that is easily obtainable at competitive prices. Please direct comments regarding this communication to the ISS Technology Communications Group at this Internet address: [email protected] The information in this document is subject to change without notice. © Copyright 2001, 2003 Hewlett-Packard Development Company, L.P. 04/2003 Document Number TC030412TB 9