I got during the last full backup the following message:
“Index cache [D:\IndexCache] free space on MediaAgent [host name] is  MB. It is considered critically low. Backups will start failing if the cache runs out of space. Take one of the following actions: 1. Increase the index cache total disk space. 2. Reduce the retention setting on the index cache.”
How can I reduce the index cache size?
Best answer by Marcelo MansanoView original