ProLiant DL740 Server Maintenance and Service Guide

Host Module Removal and Replacement Procedures
4-14 HP ProLiant DL740 Server Maintenance and Service Guide
HP CONFIDENTIAL Codename: Jethro Part Number: 270853-004 Last Saved On: 2/13/04 10:40 AM
Hot-Replacing Memory
If there is a problem with a DIMM in the server, the DIMM status LEDs will illuminate as
either solid or blinking. If the DIMM status LED for a specific DIMM in a specific cartridge
is solid, then the DIMM needs to be replaced.
CAUTION: A redundant memory configuration is required when performing Hot Plug RAID
Memory functions.
• If all 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), then no cartridge can be removed. An audible alarm will sound if any
cartridge is unlocked.
IMPORTANT: You cannot perform a hot-replace of memory if only four memory cartridges are
installed. The system must have a redundant memory configuration before the hot-replace feature will
function.
To replace DIMMs:
1. Unlock the cartridge and slide it out of the server by following the procedure in the
“Memory Cartridge” section of this chapter.
CAUTION: Do not remove a memory cartridge if the cartridge power LED is blinking or is
solid green. The system will halt.
2. Remove the failed DIMM.
3. Install a working DIMM of the same speed, type, and size. It should have the same HP
part number (for example 123456-12x, where x is not required to match).
CAUTION: When handling a memory module, be careful not to touch any of the contacts.
Doing so can damage the module.
IMPORTANT: Be sure DIMMs are installed in proper orientation. The DIMMs are keyed to be sure they
are installed correctly in the memory socket.
4. Rotate all of the DIMM socket levers inward.
5. Insert the memory cartridge in the server and secure it in place by closing the cartridge
lever.
6. Lock the memory cartridge in place by sliding the cartridge lock to the locked position.
7. The system will rebuild and verify the data on the DIMMs in the memory cartridge while
the cartridge power LEDs are blinking. This process is complete when the cartridge
power LED is illuminated solid green, indicating that the cartridge is online.
8. Continue with normal server operation.