Sun Microsystems Cobalt LX50, Руководство пользователя

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Chapter 5: Maintaining the Server
5-6 User Guide—Sun Cobalt LX50 Server
Memory
Only PC133-compliant SDRAM is supported by the server board. Install from 128 MB to 6 GB of registered ECC
memory using up to six DIMMs. The Sun Cobalt LX50 server chassis requires low-profile (LP) 1.2-inch DIMMs.
DIMMs must be installed in pairs (not side-by-side) and in the following order: 1A and 1B, 2A and 2B, 3A and 3B
(see Figure 65). Each DIMM in a pair must be the same memory size and type. The server uses DIMMS with CL3
timing.
Installed DIMMs must be the same speed and must all be registered
1
. For part numbers of optional DIMMs, see
Table 4 on page 1-4.
Figure 65. DIMM Pair Locations
!
Caution : Before touching or replacing any component inside the LX50 server, disconnect all
external cables and follow the instructions in “Safety: Before You Remove the Cover” on
page 5-2 and “Removing and Replacing the Cover” on page 5-3. Always place the server on a
grounded ESD pad and wear a properly grounded antistatic wrist strap.
1. Registered DIMMS are those with an onboard latch that resynchronizes the address/control lines to the DIMM.
These latches are also buffers to allow the Main Board electronics to drive multiple-row devices. It is most common
for ECC SDRAM modules to be registered.
!
Caution : Use of unauthorized DIMM modules may damage the server and may void the
warranty.
✍
Note : The Comprehensive Test should be run after changing any FRU, CRU, or adding an
optional component. See “Run System Diagnostic Test” on page 4-15.
OM11715
3A
1B
2B
3B
1A
2A