Cisco Cisco MCS 7828-I3 Unified Communications Manager Appliance Fehlerbehebungsanleitung
Install Replacement SDRAM Memory Module(s) in an MCS
7855I−n.n−ECS1, MCS 7855I−n.n−ECS2, MCS
7865I−n.n−ECS1, or MCS 7865I−n.n−ECS2 Server
7855I−n.n−ECS1, MCS 7855I−n.n−ECS2, MCS
7865I−n.n−ECS1, or MCS 7865I−n.n−ECS2 Server
Suitable memory Field Replacement Units (FRU) can be purchased from Cisco using the following part
numbers:
numbers:
MEM−7835H−2.4−256=
•
MEM−7835H−2.4−512=
•
Memory can only be installed as a pair or quad of the same size, speed, and type. To add 1 GB of memory
using two 512 MB DIMMs or 2 GB using two 1 GB DIMMs, two of the four currently installed 512 MB
DIMMs must be physically relocated to other DIMM slots on the server memory card. The four currently
installed DIMMs need to be relocated because they are configured as a single 4−way interleaved memory set,
and must now be reconfigured as two 2−way interleaved sets. The memory controller cannot support both
2−way and 4−way interleaving simultaneously. The server memory card provides a label on the metal bracket
depicting the memory connector slots and their purpose.
using two 512 MB DIMMs or 2 GB using two 1 GB DIMMs, two of the four currently installed 512 MB
DIMMs must be physically relocated to other DIMM slots on the server memory card. The four currently
installed DIMMs need to be relocated because they are configured as a single 4−way interleaved memory set,
and must now be reconfigured as two 2−way interleaved sets. The memory controller cannot support both
2−way and 4−way interleaving simultaneously. The server memory card provides a label on the metal bracket
depicting the memory connector slots and their purpose.
If you are installing four additional 512 MB DIMMs to configure the system as 4 GB, then the four new
DIMMs can be added without any change to the interleaved memory set of the existing four DIMMs. In either
case, the new PC2100 parts cannot be used in either a 2−way or 4−way interleaved set with any existing
PC1600 DIMMs. The new PC2100 parts will act as PC1600 parts in the server. If you want to use a hot spare
memory configuration, then you cannot mix PC1600 and PC2100 technologies in the server.
DIMMs can be added without any change to the interleaved memory set of the existing four DIMMs. In either
case, the new PC2100 parts cannot be used in either a 2−way or 4−way interleaved set with any existing
PC1600 DIMMs. The new PC2100 parts will act as PC1600 parts in the server. If you want to use a hot spare
memory configuration, then you cannot mix PC1600 and PC2100 technologies in the server.
If you do not purchase memory through Cisco, you can use DIMMs from different manufacturers, if
necessary, as long as they meet the following requirements:
necessary, as long as they meet the following requirements:
From the same manufacturer for any pair or quad interleaved set.
•
JEDEC standard PC1600 or PC2100.
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Registered (address/control bus delay registers at inputs and outputs).
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Double−Data Rate (DDR).
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Error−Correcting Code (ECC).
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200 MHz (inherent to PC1600) or 266 MHz (inherent to PC2100) data rate.
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CL2.5 (Column Address Strobe clock cycle latency value).
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2.5Vdc.
•
The server supports up to twelve 2 GB memory modules, yielding a potential maximum of 24 GB. However,
the operating system software delivered with your Cisco Unity system can physically address a maximum of 4
GB. Physical Address Extension (PAE) is not currently supported for your Cisco Unity server.
the operating system software delivered with your Cisco Unity system can physically address a maximum of 4
GB. Physical Address Extension (PAE) is not currently supported for your Cisco Unity server.
Install DIMMs in the MCS 7855I or MCS 7865I System Board
Use this procedure to install the DIMMs in the MCS 7855I or MCS 7865I system board.
Read the manufacturer safety information, static−sensitivity, and installation guidelines that were
included with the DIMM pair(s).
included with the DIMM pair(s).
1.
Turn off the server and disconnect all power cords and cables.
2.
Remove the top cover.
3.
Remove the air baffle.
4.
Remove the memory board assembly from the server.
5.
Open the memory board airflow guide.
6.
Determine the location for the new DIMM pair(s) or quad(s):
7.