NEC Express5800 Series Maintenance Manual page 82

Chapter 2 Useful Features
(a) Persistent Memory Options Menu
When you select System Configuration > BIOS/Platform Configuration (RBSU) > System Options >
Memory Operations > Persistent Memory Options from the System Utilities, the Persistent Memory Options
menu appears.
For details about the options, see the table below.
Option
Persistent Memory
Backup Power Policy
Persistent Memory
Integrity Check
Persistent Memory
Address Range Scrub
Scalable Persistent
Memory Options
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Parameter
[Wait for Backup Power on Boot]
Continue Boot without Backup Power
[Enabled]
Disabled
[Enabled]
Disabled
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Express5800/R120h-1E, R120h-2E Maintenance Guide
Description
This option controls whether the system waits
during system boot for batteries to charge if
sufficient battery backup power for the
installed persistent memory is not available. If
this option is configured for 'Continue Boot
without Backup Power', the server boots
even if sufficient battery backup power is not
installed. In this case, if sufficient battery
backup power is not enabled, the configured
memory will NOT be used by the operating
system as persistent storage or as system
memory.
When this option is enabled, persistent
memory will be checked during system boot
to determine data integrity. Depending on the
Persistent Memory Address Range Scrub
setting, discovered errors during the data
integrity check will either be presented to the
operating system for recovery or cause the
persistent memory to be mapped out and
unavailable to the operating system. If this
option is disabled, any persistent memory
which has issues with the ability to read data
or which has bad data may result in
uncorrectable errors that result in a system
crash.
Use this option to configure the NVDIMM
memory Address Range Scrub support.
When enabled, this option allows a supported
OS to attempt recovery from an
uncorrectable memory error detected in the
NVDIMM memory. When disabled, the
NVDIMM memory will be disabled on the
following boot after detecting an
uncorrectable memory error in the NVDIMM.
If the NVDIMM memory Memory Interleaving
option is enabled, a disabled NVDIMM will
include all the modules or regions within the
set.
Use this option to configure persistent
memory region allocation.
[ ]: Default setting
1. System Utilities