NEC SV8500, Operation And Maintenance Manual

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CHAPTER 2 Operations of SV8500 Server
• CPU Replacement Procedure for CPU Dual Configuration
Replacement procedure explained here assumes the following scenario as an example:
• CPU card (#1) must be replaced
• CPU card (#1) is operating as ACT
Therefore, in the following explanation, replace #1 with #0 as needed when performing this procedure on the
actual system.
Note:
When the system is CPU-dual configuration, system shutdown is not necessary for CPU replacement.
[Start]
STEP 1 Make sure the CPU to be replaced is placed in STBY mode.
• “ACT” lamp of “SYS0” side lights green: CPU card #0 is in ACT mode.
• “ACT” lamp of “SYS1” side lights green: CPU card #1 is in ACT mode.
STEP 2 If the CPU to be replaced is in ACT mode, place it in STBY mode. Otherwise, start from STEP
5 .
• Use CMOD command from PCPro.
Note: MODE switch - 4 is Make Busy Request (MBR) key. CPU ACT/STBY can be switched by this switch. See
“
How to Change over CPU Card ” - “ CPU Changeover by Key Operation” for more details.
STEP 3 Make sure the CPU to be replaced is placed in STBY mode.
• “ACT” lamp on the EMA card is changed? (In this example, “SYS0: ACT” lamp lights green.)
STEP 4 Lock the ACT-side CPU card to ACT. (In this example, set CPU card #0 always ACT.)
• Select ACT-side CPU by SW01-2 (SYS SEL) on EMA card. (In this example, downward.)
• Lock CPU ACT/STBY by SW01-1 (SYS LOCK) on EMA card: upward
Note: CPU ACT/STBY can be locked so that CPU ACT/STBY switchover may not take place during CPU card
replacement.
Note:
SW01-02 (SYS SEL) setting shown above is an example, by which CPU card #0 is locked to ACT. The
setting may vary depending on the actual system.
STEP 5 Turn off the STBY side CPU card.
<By PCPro Tools (recommended)>
• On the initial screen, select “System Control” radio button.
• Select an appropriate System Side (System 0 or System 1).
• Click “Execute” button.