Nice article.

I keep 99 (max) errorlogs. It depends on the size of each errorlog/entries in the errorlog. When the size is over 1 MB; it takes time to open it (in my case). This is one of the factors I consider how often to recycle the errorlog.

I zip the old errorlogs by the end of the year and move it to a central depository. This can be automated, too.

Keeping 25000 errorlog may be not realistic; it will take a lot of space on the current live system.