System information

Upgrading Your System
AlphaServer 1000 to 1000A Upgrade 1-11
Removing the Memory Modules
Remove memory SIMMs from system (see Figure 7) and install them in the
AlphaServer 1000A 5/xxx system (see Figure 8).
Note that the ECC bank SIMM is not used in 5/xxx systems. The ECC bank is left
unfilled. All AlphaServer 1000A 5/xxx memory bank SIMMs have error detecting
and correcting logic (ECC functionality) built in.
Caution:
The ECC SIMM is not compatible with memory bank SIMMs. Do not
place the ECC SIMM in a memory bank of the new AlphaServer 1000A 5/xxx
system. The SIMM in the ECC bank should be left in the AlphaServer 1000 4/2xx
system and returned to Digital.
Be sure to comply with the following memory configuration rules when adding
memory:
• Bank 0 must contain a memory option (4 SIMMs, 0, 1, 2, and 3)
• A memory option consists of 4 SIMMs (0, 1, 2, and 3)
• All SIMMs within a bank must be of the same capacity