Ecc memory, General dimm slot population guidelines, Installing a dimm – HP ProLiant XL220a Gen8 v2-Server User Manual
Page 28
Hardware options installation 28
Item Description
Definition
1
Size
—
2
Rank
1R = Single-rank
2R = Dual-rank
3R = Three-rank
4R = Quad-rank
3
Data width
x4 = 4-bit
x8 = 8-bit
4
Voltage rating
L = Low voltage (1.35V)
U = Ultra low voltage (1.25V)
Blank or omitted = Standard
5
Memory speed
12800 = 1600-MT/s
10600 = 1333-MT/s
8500 = 1066-MT/s
6
DIMM type
R = RDIMM (registered)
E = UDIMM (unbuffered with ECC)
L = LRDIMM (load reduced)
For the latest supported memory information, see the QuickSpecs on the HP website
. At the website, choose the geographic region, and then locate the product by
name or product category.
ECC memory
The server supports the standard ECC memory correction mode. Standard ECC can correct single-bit memory
errors and detect multibit memory errors. When multibit errors are detected, the error is signaled to the server
and causes the server to halt.
General DIMM slot population guidelines
•
The server supports two memory channels with two DIMM slots per channel:
o
Memory channel 1 consists of the two DIMMs that are closest to the processor.
o
Memory channel 2 consists of the two DIMMs that are located farthest from the processor.
•
White DIMM slots denote the first slot of a channel (3-A, 1-B).
•
The server supports up to 32 GB of system memory using four 8 GB 1600 MT/s ECC UDIMMs.
•
When installing DIMMs:
o
Populate the DIMM slots in this sequence: 3-A, 1-B, 4-C, 2-D.
o
Use only HP qualified DIMMs.
•
The server does not support RDIMMs and LRDIMMs.
•
The minimum DIMM requirement to make this server bootable is a DIMM in slot 3-A.
•
For DIMM spare replacement, install the DIMMs per slot number as instructed by the system software.
For detailed memory configuration rules and guidelines, use the Online DDR3 Memory Configuration Tool
on the HP website
Installing a DIMM