Specifications

AlphaServer 1000A Owner's Guide Configuring • 6-11
Memory
The system unit supports 20 single in-line memory modules (SIMM) on the system
board. The SIMM modules are grouped in four memory banks consisting of five
modules: four memory modules plus one module for ECC (Error Correction Code).
Figure 6-2 shows the memory bank groupings on the system board. A minimum of
one memory bank (five modules) is required.
Warning: Before installing a memory module, turn off all
power to the system. Refer to "Turning the System Off" in
Chapter 4, "Basic Operation" for more information.
Figure 6-2 Memory Banks
Bank 3
Bank 2
Bank 1
Bank 0
ECC Banks
MA00327
SIMM 3
SIMM 2
SIMM 1
SIMM 0
ECC SIMM for Bank 2
ECC SIMM for Bank 0
ECC SIMM for Bank 3
ECC SIMM for Bank 1
SIMM 3
SIMM 2
SIMM 1
SIMM 0
SIMM 3
SIMM 2
SIMM 1
SIMM 0
SIMM 3
SIMM 2
SIMM 1
SIMM 0
Table 6-1 Operating System Memory Requirements
Operating System Memory Requirements
Digital UNIX and OpenVMS Alpha 32 MB minimum; 64 MB recommended
Windows NT 16 MB minimum; 32 MB recommended
Windows NT Server 32 MB minimum; 64 MB recommended