Oracle Netra SPARC S7-2, Service Manual, Page: 164 / 258

Install a DIMM
b.
Ensure that the replacement DDR4 DIMM matches the size of the DIMM it is
replacing.
2.
Install a DIMM.
You must not replace a single-rank or dual-rank DIMM with a quad-rank DIMM and vice
versa. If you violate this rule, the performance of the server might be adversely affected.
For DIMM socket population rules, see “Understanding DIMM Layout and Population
Rules” on page 160 .
Note -
For troubleshooting purposes, if you want to move a faulty DDR4 DIMM to a new
DIMM socket or reseat a DIMM, you must first manually clear the associated DIMM fault.
Otherwise, the DIMM fault might follow the DIMM to the new socket location or reoccur on
the current socket location, possibly causing a false DIMM fault condition. See Step 4 .
a. On an available DIMM slot, ensure that the ejector tabs are in the open
position.
b. Align the notch in the DIMM with the connector key in the connector socket.
The notch ensures that the DIMM is oriented correctly.
c. Push the DIMM into the connector until the ejector tabs lock the DIMM in
place.
164 Netra SPARC S7-2 Server Service Manual • February 2017