System Memory; General Memory Module Installation Guidelines - Dell PowerVault 500 Owner's Manual

toward the front of the system and disengaging the bracket from the chassis wall. See Figure 3-25.
To replace the bracket, align the bracket clips with their slots on the chassis wall, then slide the bracket toward the back of the system until all the clips and
the blue release latch are fully engaged.
Figure 3-25. Installing and Removing the Tape Drive Cable Retention Bracket
1 tape drive cable
3 release latch
5 tape drive cable retention bracket
System Memory
You can upgrade your system memory to a maximum of 32 GB by installing 533MHz or 667MHz fully buffered (FB) DDR II memory modules in sets of 256-MB,
512-MB, 1-GB, 2-GB, or 4-GB. The eight memory sockets are located on the system board under the cooling shroud adjacent to the power supply bays. See
Figure 6-2. You can purchase memory upgrade kits from Dell.
NOTICE: If you remove your original memory modules from the system during a memory upgrade, keep them separate from any new memory modules
that you may have, even if you purchased the new memory modules from Dell. Use only 533 MHz or 667 MHz DDR II FB-DIMMs.
The memory module sockets are divided into two equal branches (0 and 1). Each branch consists of two channels:
Channel 0 and channel 1 are in branch 0.
l
Channel 2 and channel 3 are in branch 1.
l
Each channel consists of two DIMM sockets:
Channel 0 contains DIMM_1, DIMM_5.
l
Channel 1 contains DIMM _2, DIMM_6.
l
Channel 2 contains DIMM_3, DIMM_7.
l
Channel 3 contains DIMM _4, DIMM _8.
l
The first DIMM socket of each channel has white release tabs.

General Memory Module Installation Guidelines

To ensure optimal performance of your system, observe the following guidelines when configuring your system memory.
Use only qualified Fully-Buffered DIMMs (FBDs). FBDs can be either single-ranked or dual-ranked. FBDs marked with a 1R are single-ranked and modules
l
marked with a 2R are dual-ranked.
A minimum of two identical FBDs must installed.
l
DIMM sockets must be populated by lowest number first.
l
FBDs must be installed in pairs of matched memory size, speed, and technology, and the total number of FBDs in the configuration must total two, four,
l
or eight. For best system performance, all four, or eight FBDs should be identical memory size, speed, and technology.
Memory sparing and memory mirroring require eight FBDs, and all FBDs must be of identical memory size, speed, and technology.
l
Memory sparing and memory mirroring cannot be implemented at the same time.
l
2 SCSI controller card
4 bracket clips (6)