About Memory - Silicon Graphics Octane R12000 Installation Manual

Silicon Graphics ® OCTANE

About Memory

6
® R12000 ™ 2 GB Memory Upgrade Kit Installation Guide
If you are not running IRIX 6.5.6, upgrade your operating system, as described in
the next section.
Installing IRIX 6.5.6
If you are not running IRIX 6.5.6 or later, you must upgrade your operating system before
installing the 1 GB DIMMs. Use the provided IRIX upgrade CDs to upgrade your
operating system:
Follow the instructions in the software installation booklet included with the IRIX
upgrade CDs. When you complete the installation, proceed as follows:
• If you do not want to run more than 6 GB of memory, read "About Memory" below,
then proceed with the memory upgrade.
• If you want to run more than 6 GB of memory, you must install the required
software patch. Before you install the patch, you must reboot your system. Choose
Toolchest> System>Restart System, then go to "Running More than 6 GB of
Memory" on page 8.
The Octane workstation has four DIMM banks with two DIMM sockets in each of the
banks. Before you install the two 1 GB DIMMs, review the following information:
• Bank 1 (sockets 1 and 2) must always be filled.
• The highest density DIMMs must be installed in Bank 1, while lower density
DIMMs must be installed in the remaining banks by order of their size (highest
density first).
• Banks must be filled sequentially; when Bank 1 is full, fill Bank 2. Do not skip banks.
• Each bank must be empty, or contain two DIMMs, one in each of the two sockets.
• Capacity refers to the number of megabytes or gigabytes in a DIMM: 32, 64, 128
megabytes, and so on, or 1 GB.
– Minimum memory capacity in the Octane workstation is 64 MB (2 x 32 MB
DIMM).
– Maximum memory capacity in the Octane workstation is 8 GB (8 x 1 GB
DIMM).