NEC Storage Performance Monitor/Optimizer User Manual page 23

Table 1-3 Types of Statistic Information Accumulated in Statistic Information History Files
By Logical Disk
Write External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
Write Hit External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
Read External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
Read Hit External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
Prefetch Hit External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
Busy Internal average Busy
Ratio
Others
(Note 1) Port of a disk director (called a "disk port" hereafter).
(Note 2) For a disk array that is not provided with function for collecting information of operating time, internal Busy
Ratio and internal operating time is not accumulated in a statistic information history file.
(Note 3) For a disk array that is not provided with function for collecting information about RANK, information about
Chapter 1 Overview of Performance Monitoring Function
Unit of Summarizing
By Host Port By Disk Port (Note1)
External I/O Count Internal I/O Count
External Average Internal Average
Response Time Response Time
External Maximum Internal Maximum
Response Time Response Time
External Transfer Rate Internal Transfer Rate
External I/O Count Int. I/O Count
External Average Int. Average Response
Response Time Time
External Maximum Int. Maximum
Response Time Response Time
External Transfer Rate Int. Transfer Rate
External I/O Count
External Average
Response Time
External Maximum
Response Time
External Transfer Rate
I-17
By Physical Disk By RANK
Internal I/O Count Internal I/O Count
Internal Average Internal Average
Response Time Response Time
Internal Maximum Internal Maximum
Response Time Response Time
Internal Transfer Rate Internal Transfer Rate
Int. I/O Count Int. I/O Count
Int. Average Response Int. Average Response
Time Time
Int. Maximum Int. Maximum
Response Time Response Time
Int. Transfer Rate Int. Transfer Rate
Internal average Busy Internal average Busy
Ratio Ratio
Internal operating Internal operating
time time