4.12
Memory Configuration and Installation
The system supports a total of 4 DIMMs, divided into two arrays of two slots each.
DIMMs within an array must be of the same size and speed. The system supports a
maximum of 4 GB of memory. The minimum memory configuration is 512 MB.
The
AlphaServer
TS15 memory subsystem is distributed across four memory DIMM slots of
SDRAM with PECL clocks. The system supports DIMM sizes of 256 MB, 512 MB, and
1024 MB.
4.12.1
Memory Organization
Memory is organized into two arrays of two DIMMs each. The DIMMs within a given array
must be equivalent in every aspect (not only size but functionality such as stacked and un-
stacked DRAMs), and to have interleaved memory, all DIMMs in the system must be the
same. The addressed arrays are 0 and 2.
4.12.2
Physical Layout on the System Motherboard
Refer to Figure 1-9 for the DIMM slot layout on the system motherboard.
The memory slots are organized as follows:
J14= Array0, DIMM0
J15 = Array2, DIMM2
J12 = Array0, DIMM1
J13 = Array2, DIMM3
4.12.3
Configuration Rules
The following configurations are the only supported options for the
AlphaServer
TS15
system. If the system contains a memory configuration other than one listed here, the system
will not initialize and the console will display the appropriate status.
•
DIMMs must be the same size and speed within each array.
•
To maximize performance, both arrays should be populated with the same DIMMs (this
allows two-way interleaving between the arrays).
4-24
hp AlphaServer TS15 Owner's Guide
