Hitachi Universal Storage Platform V, Справочное руководство

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Functional and Operational Characteristics 3-23
Hitachi Universal Storage Platform V/VM User and Reference Guide
Mode Category Function Default MCU/RCU
676 Audit Log
This option is used to set whether the audit log is to be stored
onto the system disk or not.
Mode 676 = ON: The audit log is stored onto the system disk.
Mode 676 = OFF (default): The audit log is not stored onto
the system disk.
By switching the Audit Log Buffer to ON/OFF through the
System Disk Option of Storage Navigator VLL function, this
option is also switched to ON/OFF.
Note:
1. This option is applied to the sites where the level of
importance of the audit log is high.
2. A system disk with available space of more than 130 MB
must exist: 154 cylinders for 3390 devices (185 cylinders
for 3380). Otherwise, the audit log is not stored even when
this option is ON).
3. Make sure to turn this option on after preparing a normal
system disk that meets the condition in (2). If Define
Configuration & Install is performed, turn this option on
after formatting the system disk.
OFF –
677 OPEN and
mainframe This option is used not to perform SM backup for saving
battery consumption after planned PS Off.
Mode 677 = ON: Mode 677 is available only when Mode 460 is
ON.
When planned PS Off ends normally and the SM information is
successfully saved in SVP, the following operations are
performed according to the model:
ƒ
USP V, USP VM model: Battery is not used for SM backup.
ƒ
NSC model: BASE PCB is powered off.
Mode 677 = OFF: Although planned PS Off ends normally,
battery is used for SM backup.
Note: This option is recommended when PS Off that exceeds
the backup time is performed, or where NSC model is used.
OFF MCU/RCU