Hi all I have been given a 15 nodes C* 2.2.8 cluster to manage which has a large size KS (~800GB). Given the size of the KS most of the management tasks like repair take a long time to complete and disk space management is becoming tricky from the systems perspective.
This KS size is going to go up in future and we have a business requirement of long data retention here. I wanted to share this with all of you and ask what are my options here, what would be the best way to deal with a large size KS like this one. To make situation even trickier low IO latency is expected from this cluster as well. Thankful for any suggestions/advice in advance.