LSI MegaRAID SCSI 320-2 RAID Controller Series 518 User Manual download pdf (Page 76)

6-4 Hardware Installation

6.2.3 Step 3: Install Cache Memory

Important: A minimum of 32 Mbytes of cache memory is required. The

cache memory must be installed before the MegaRAID

controller is operational.

Install cache memory DIMMs on the MegaRAID controller card in the

cache memory socket. Use a 72-bit 3.3 V single-sided or double-sided

168-pin unbuffered DIMM. Lay the controller card component-side up on

a clean static-free surface. The memory socket is mounted ﬂush with the

MegaRAID card, so the DIMM is parallel to the MegaRAID card when

properly installed. The DIMM clicks into place, indicating proper seating

in the socket. The MegaRAID card is shown lying on a ﬂat surface below.

Figure 6.1 Installing DIMM Memory

6.2.3.1 Installing or Changing Memory

Important: The battery pack harness or cable must be disconnected

from J10 on the MegaRAID SCSI 320-2 Ultra320 card

before you add or remove memory.

Perform the following steps to install or change memory:

1. Bring down the operating system properly. Make sure that cache

memory has been ﬂushed.

You must perform a system reset if operating under DOS. When the

computer reboots, the MegaRAID controller will ﬂush cache memory.

2. Turn the computer power off. Disconnect the power cables from the

computer.

3. Remove the computer cover.

4. Disconnect the battery pack cable from the MegaRAID controller.

5. Remove the MegaRAID controller.

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LSI MegaRAID SCSI 320-2 RAID Controller Series 518 User Manual Page 76