HP ProLiant WS460c G6 Workstation Blade with WS460c Graphics Expansion Blade User Guide

Hardware options installation 39
DIMM identification
To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and
table.
Item Description Definition
1
Size —
2
Rank 1R = Single-rank
2R = Dual-rank
4R = Quad-rank
3
Data width x4 = 4-bit
x8 = 8-bit
4
Voltage rating L = Low voltage (1.35v)
Blank or omitted = Standard
5
Memory speed 10600 = 1333-MHz
8500 = 1066-MHz
6
DIMM type R = RDIMM (registered)
E = UDIMM (unbuffered with ECC)
For the latest supported memory information, see the QuickSpecs on the HP website (http://www.hp.com).
Memory configurations
To optimize workstation blade availability, the workstation blade supports the following AMP modes:
• Advanced ECC—provides the greatest memory capacity for a given DIMM size, while providing up to
4-bit error correction. This mode is the default option for this workstation blade.
• Mirrored Memory—provides maximum protection against failed DIMMs. Uncorrectable errors in one
channel are corrected by the mirror channel.
• Lockstep—provides enhanced protection while making all installed memory available to the operating
system. The workstation blade can continue to function if a single- or multi-bit memory failure within a
single DRAM device occurs.