Fujitsu Eternus DX200F, Руководство пользователя

Страница: 687 / 1082

Appendix A Parameter List
A.1 System Management
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED P2X0-1270-13ENZ0
687
●
Tuning Parameters Settings
• Initial Caching Threshold
• Caching Threshold
• "Not replace Cache Data" checkbox
Description This parameter specifies the threshold that affects how frequently data is stored in EXC
or EXCP.
The higher the value is, the less frequently data is stored in EXC or EXCP. The smaller the
value is, the more frequently data is stored in EXC or EXCP.
If the set value is exceeded, it is assumed that the relevant data is read frequently and
the data is stored in EXC or EXCP.
This parameter specifies the threshold value until the EXC or the EXCP memory is full
after the ETERNUS DX is turned on.
Input condition/
Display contents 1 - 16
This parameter is used for performance tuning. It is not necessary to change the default setting (1) for normal use.
Description Similar to "Initial Caching Threshold", this parameter specifies the threshold that affects
how frequently data is stored in EXC or EXCP.
If the set value is exceeded, it is assumed that the relevant data is read frequently and
the data is stored in EXC or EXCP.
This threshold value is used after the EXC or the EXCP memory is full.
Input condition/
Display contents 1 - 16
•
This parameter is used for performance tuning. It is not necessary to change the default setting (5) for normal
use.
•
This item is available only when the "Not replace Cache Data" checkbox is cleared (cache data is relocated).
Description Select or clear the "Not replace Cache Data" checkbox.
If the checkbox is selected, new data is not stored (relocated) after the EXC or the EXCP
memory is full.
If the checkbox is cleared, the ETERNUS DX chronologically deletes the stored data from
EXC or EXCP beginning with the oldest and stores (relocates) new data.
Input condition/
Display contents "Not replace Cache Data" checkbox
•
Selected
•
Cleared