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Area
Disk Array Subsystem
High Load RANK
Replacement plan
display area
On the Replacement Plan dialog, selecting a line of a replacement plan on the Replacement plan display area and
clicking [Start LD Movement] button or selecting [Start LD Movement] on right-click popup menu starts
movement of the logical disks. For starting moving of logical disks, refer to 6.2.7 "Start LD Movement".
On the Replacement Plan dialog, selecting a line of a replacement plan on the Replacement plan display area and
clicking [Replacement Effect Prediction] button or selecting [Replacement Effect Prediction] on right-click popup
menu can estimate the effectiveness of replacement after logical disk movement. For the replacement
effectiveness of replacement after logical disk movement, refer to 6.2.6 "Replacement Effect Prediction".
Replacement plan is unavailable in the following cases:
Busy Ratio information is not stored in performance optimization log file.
Busy Ratio information of an analysis period does not exist in performance optimization log file.
A suggested replacement plan is invalid in the following cases:
A source logical disk on heavy-load RANK has been moved.
Movement schedule has been registered for a source logical disk on heavy-load RANK.
Chapter 6 Operation of Performance Optimization Function (GUI)
Table 6-14 Description of [Replacement Plan] Dialog
Nicknames of selected disk arrays are displayed.
RANK numbers of the bottleneck RANKs area displayed. The applicable
RANKs to be displayed in the replacement plan display area can be changed by
selecting RANKs on a pull-down menu. RANK numbers are listed in order of
heavy-load.
The candidate movement destination logical disks are listed in the order of
effectiveness in I/O distribution. The following are items to be displayed.
Recommendation Rating
Ranking of effectiveness in I/O distribution after logical disk movement is
displayed.
Source LD No.
Icon and number of source LD are displayed. Icons displayed are the same
as those in Configuration Display Area.
Source LD Name
Source logical disk names are displayed.
Destination RANK
Icons and numbers of destination RANKs are displayed. RANK icons
displayed are the same as those in Configuration Display Area and Detailed
Display Area.
Destination LD No.
Icons and numbers of destination logical disks are displayed. Icons
displayed are the same as those in Work Disk for Optimization Display
Area.
Destination LD Name
Destination logical disk names are displayed.
Source RANK %Busy
Expected change of Busy Ratio is displayed.
Destination RANK %Busy
Expected change of Busy Ratio is displayed.
II-31
Description
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