Hardware options installation 48
15.
Install the heatsink.
16. Install the processor memory drawer cover.
17. Install the processor memory drawer.
18. Connect each power cord to the server.
19. Connect each power cord to the power source.
20. Power up the server ("Powering up the server" on page 24).
Memory options
Memory configurations
To enhance server availability, the server provides the following AMP modes.
Performance mode - Advanced ECC mode default
The default memory mode for the server is Performance mode - Advanced ECC. Performance mode
enables memory bandwidth 2x the DIMM clock speed. Advanced ECC memory can correct single-bit
memory errors and multi-bit memory errors on a single x8 or two adjacent x4 DRAM devices. The server
provides notification when correctable errors exceed a predefined threshold. When Advanced ECC
detects uncorrectable errors, the server notifies the user and shuts down the operating system. Advanced
ECC is available for maximum memory configurations.
Lockstep mode - DDDC
The server offers double device data correction (DDDC) with the Intel Xeon Processor E7 series in
Lockstep mode. Memory bandwidth is reduced to equal clock speed of DIMMs. DDDC produces
significantly less system downtime over Advanced ECC. It can tolerate soft and hard errors encountered
in up to two x4 DRAM devices within any DIMM pair. Tolerating memory faults greatly extends system
up-time.
Online spare memory
Online spare memory provides protection against degraded DIMMs by reducing the likelihood of
uncorrected memory errors. This protection is available without any operating system support.
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