HP 3000 99x Family, Installation Manual, Page: 100 / 173

3-52 Chapter 3
Installation
Verifying the System
NOTE Minimum memory for 990/992/890 Systems without a UPS
If one of these systems does not have enough memory for powerfail, you will
see a message similar to the following:
WARNING: Insufficient memory to guarantee powerfail recovery.
The system requires 64 MB per processor. This system
has 64 MB and needs at least 128 MB for 2 processors.
Failure to meet the minimum memory requirements will result in lost data
during a powerfail recovery.
3. The console displays the main menu for PDC:
PDC Command to Enable/Disable the PDT
MPE/iX version 5.0 and higher and HP-UX version 10.0 and higher include a feature
called Memory Page Deallocation (MPD). This feature allows the OS to deallocate bad
pages (4 KBytes) of memory from system use rather than requiring the memory array to
be replaced. To store MPD information, the computer system uses a special NVRAM table
called the Page Deallocation Table (PDT).
If the system came with (or was upgraded to) MPE/iX version 5.0 or higher, or HP-UX
version 10.0 or higher, the PDT is enabled, otherwise it is disabled.
You should check the state of the PDT (enabled or disabled) using the following
procedure to determine if it is properly set for the OS version running on the
system.
1. To display the current state of the PDT, enter
toxic_flag_pd
at the Main Menu.
For example:
Main> toxic_flag_pd
PD - Enable Page Deallocation flag value is false
------- Main Commands -----------------------------------------------------
Commands Available
PR Primary: Continue boot using primary boot path
RE Restart: Restart the system and activate new settings
Menus Available
BO Boot: Perform boot tasks (menu)
FI Firmware: Update firmware (menu)
SE Service: Service the system (menu)
TO Tomb: Display HPMC troubleshooting information (menu)
HE Help: Display help text on menu selections
-------
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