NEC Storage Performance Monitor/Optimizer User Manual page 178

Appendix D Estimation of NEC Storage PerformanceMonitor File Size
Furthermore, if there is a period in which there is no input or output during the statistic
information storage period, the actual file size may become smaller than the calculated size.
Example: With regard to the disk array with the number of HPs:2, DPs:2, LDs:8, PDs:8, no RDs,
the number of CACHE:1, and the number of RANKs:2 (the number of LDs and PDs is
4), the size of the statistic information history file obtained by accumulating statistic
information for one day based on the logging Interval time of 5 minutes
A = 272 + (2 4) + (2 4) + (8 48) + (8
+ 16 + 16)) = 1,200
B = 80 + (2 112) + (2 48) + (8 96) + (8 64) + (0 272) + (1 272) + (2 64)
= 2,080
The size of the statistic information history file (byte) = 1,200 + 2,080 ((24 60 60)
60)) = 678,304 (byte)
48) + (0 16) + (1
49
16) + ((32 + 16 + 16) + (32
(5