Why does the VRM Monitor display 0 days for the Average Retention Time?

Question

Why does the VRM Monitor display 0 days for the Average Retention Time?

Answer

First, the Average Retention Time in VRM Monitor represents an estimate of how long video footage can be retained, based on block consumption, bandwidth and storage availability.

This means that there is no real impact on the system, only a visual issue.

Why the issue occurs

The Average Retention Time expects that the first Pool configured in VRM to be Pool ID = 0, otherwise the estimation does not work.

When Average Retention Time shows 0 days, the issue is caused by the VRM Pool ID configuration, as follows:

• Pool ID=0 - first pool created

• Pool ID=1 – second pool created

• Pool ID=0 - later, the first pool was deleted

• Pool ID=1 – only this pool remains in use

Even though the first pool was deleted, VRM continues to search for Pool ID=0. Since it cannot find it, the system displays the error showing Average retention time = 0 days.

Unfortunately, there is no way to manually restore Pool 0, and renaming an existing pool will not fix the issue.

Solution

This incorrect display has been changed in VRM 4.70 which will be released together with BVMS 13.1.