Step 4 Install Cache Memory - LSI MegaRAID Express 500 Hardware Manual

Step 4 Install Cache Memory

Use 72-bit 3.3V unbuffered SDRAM only. The maximum memory bandwidth is 528
MB/s with an SDRAM DIMM.
A minimum of 16 MB of cache memory is required. The cache memory
must be installed before MegaRAID Express 500 is operational.
SDRAM SDRAM specifications are specified below.
Memory
Type
SDRAM 3.3 V PC-100
SDRAM 3.3 V PC-100
SDRAM 3.3 V PC-100
SDRAM 3.3 V PC-100
SDRAM 3.3 V PC-100
SDRAM 3.3 V PC-100
If the DIMM SDRAM is not installed when you receive your MegaRAID Express
500 RAID controller, you must call the manufacturer for a list of approved DIMM
vendors. You must use an approved DIMM only. Call LSI Logic Technical Support
at 678-728-1250 for the latest list of approved memory vendors.
Install cache memory on the MegaRAID Express 500 card in the DIMM socket. This
socket accepts a 168-pin DIMM.
Lay the controller card component-side up on a clean static-free surface to install the
DIMM. The memory socket is a right-angle connector and is mounted flush with the
MegaRAID card. The DIMM card, when properly installed, will be parallel to the
MegaRAID card.
The DIMM clicks into place, indicating proper seating in the socket, as shown below. The
MegaRAID card is shown laying on a flat surface in the illustration below.
52 MegaRAID Express 500 Hardware Guide
Important
Volt Speed Parity Type
Yes Single-sided
Yes Single-sided
Yes Double-sided
Yes Single-sided
Yes Double-sided
Yes Double-sided
Important
BBU Bank I Total Memory
Support
Yes 2M x 72 16 MB
Yes 4M x 72 32 MB
Yes 4M x 72 32 MB
Yes 8M x 72 64 MB
Yes 8M x 72 64 MB
Yes 16M x 72 128 MB