Please implement an ini file option perhaps called DiskCacheSizeLimit where the maximum size of DiskCache could be declared. The values provided would be the same as with ObjectCacheSizeLimit, eg DiskCacheSizeLimit=8G. Having to declare it in segments makes it unnecessarily hard to figure out what to set it to, as the user usually has a GB target in mind.
This would simply set the value of DiskCacheMaxSegments to be as close as possible to 8G.
Perhaps there could be a companion setting that would similarly compute DiskCacheMinSegments.