Dell PowerProtect DD Management Center (DDMC) 7.9 Installation and Administration Guide

Data retention policy for DDMC

DDMC maintains up to ten years of performance and capacity measurements for the DD systems it is monitoring. Data from the systems are consolidated into hourly sample points, generally collected at 30 minutes past the hour. The hourly samples are consolidated into daily samples, where a day is considered to run from Noon to Noon. Daily samples are further consolidated into weekly samples, where a week begins on Sunday.

To reduce the amount of space needed to store this historical data, DDMC periodically discards older samples. The number of samples retained depends on the nature of the data and whether the sample is hourly, daily, or weekly data. The following table shows the length of time that DDMC retains each sample.

Finally, DDMC retains up to 2,000 historical alerts from each DD system being monitored.