Removing the memory modules (DIMM)

You can remove a memory module.

The memory modules are electrostatic-discharge (ESD) sensitive. Take precautions to avoid damage from static electricity.
Parent topic: Removing and replacing SAN Volume Controller parts
Related reference
Handling static-sensitive devices

Locating memory modules

If you do not need to remove all of the memory modules, use this information to locate a specific memory module for the SAN Volume Controller model.

After you find the location of the faulty memory module, go to Removing memory modules.
  • SAN Volume Controller 2145-CF8: The SAN Volume Controller 2145-CF8 node uses six modules in DIMM slots  2 ,  3 ,  5 ,  6 ,  7 , and  8 , as shown in Figure 1.
    Figure 1. Locating the SAN Volume Controller 2145-CF8 memory modules
    This figure shows the location of the SAN Volume Controller 2145-CF8 memory modules.
  • SAN Volume Controller 2145-8A4: These modules are numbered  1  through  4 , as shown in Figure 2.
    Figure 2. Locating the SAN Volume Controller 2145-8A4 memory modulesThis figure shows the location of the SAN Volume Controller 2145-8A4 memory modules.
  • SAN Volume Controller 2145-8G4: There are two versions of this node.
    • The original version (Rev 1) uses eight 1 GB memory modules in slots  1  through  8 , which are shown in Figure 3.
    • The second version of this node (Rev 2) uses four 2 GB memory modules in slots  1 ,  3 ,  5 , and  7 .
    Figure 3. Locating the SAN Volume Controller 2145-8G4 memory modulesThis figure shows the location of the memory modules on the SAN Volume Controller 2145-8G4 system board.

  • SAN Volume Controller 2145-8F4 or SAN Volume Controller 2145-8F2: These modules are numbered  1  through  8 , as shown in Figure 4.

    Note: If more than one SAN Volume Controller 2145-8G4, SAN Volume Controller 2145-8F4, or SAN Volume Controller 2145-8F2 DIMM is indicated by the light path diagnostics, replace the DIMMs one-at-a-time, starting at the lowest numbered DIMM slot that is indicated by the diagnostics.
    Figure 4. Locating the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4 memory modulesThis figure shows the location of the memory modules on the SAN Volume Controller 2145-8F2 or SAN Volume Controller 2145-8F4 system board.
  • SAN Volume Controller 2145-4F2: When these memory modules are viewed from the front of the node, as shown in Figure 5, the modules are numbered  4  through  1 , from left to right. Modules  4  and  3  are in bank 2; modules  2  and  1  are in bank 1.
    Figure 5. Locating the SAN Volume Controller 2145-4F2 memory modulesThis figure shows the location of the memory modules on the SAN Volume Controller 2145-4F2 system board.

Removing memory modules

This topic describes how to remove the memory modules.

Perform the following steps to remove the memory modules:

  1. Follow the procedure in MAP 5350: Powering off a SAN Volume Controller node to verify that the node data is mirrored and synchronized, and that there are no dependent virtual disks (VDisks) before turning off the node.
  2. Remove the node from the rack and place it on a flat, static-protective surface. See Removing the SAN Volume Controller from a rack.
  3. Remove the top cover. See Removing the top cover.
    Attention: If the fault has been isolated only to the bank of modules instead of to a particular module, exchange both modules of the bank. Otherwise, if you need to remove fewer memory modules, see Locating memory modules. If more than one SAN Volume Controller 2145-8G4, SAN Volume Controller 2145-8F4, or SAN Volume Controller 2145-8F2 DIMM is indicated by the light path diagnostics, replace the DIMMs one-at-a-time, starting at the lowest numbered DIMM slot that is indicated by the diagnostics.
  4. Open the clips number two by pressing them outward, as shown in Figure 6. This action pulls the memory module number three out of the connector.
    Figure 6. Removing the memory modules
    Removing the memory modules
    • number one Side connector latch
    • number two Memory clips
    • number three Memory module
  5. If you have other tasks to complete inside the SAN Volume Controller, do those tasks now.
Library | Support | Terms of use | Feedback
© Copyright IBM Corporation 2003, 2009. All Rights Reserved.