AHF 20.1 on Linux - EXAchk discoveries filling up filesystem

12.2 DBMS on Linux 4.1.12, 2 compute node RAC + 10 storage cells, root filesystem on the following DEV compute node is getting space pressured... any tweaks to fine-tune space usage / purging?

[root@edwdevdbadm02 /]# cd /opt/oracle.SupportTools/exachk/

[root@edwdevdbadm02 exachk]# ls -al

total 76

drwxr-xr-x 19 root root 4096 Apr 22 02:12 .

drwxr-xr-x 10 root root 4096 Apr  7 15:50 ..

drwxr-xr-x 12 root root 4096 Apr  8 01:19 .exachk_040820_01008_discovery

drwxr-xr-x 12 root root 4096 Apr  9 01:14 .exachk_040920_010046_discovery

drwxr-xr-x 12 root root 4096 Apr 10 01:31 .exachk_041020_010022_discovery

drwxr-xr-x 12 root root 4096 Apr 11 01:28 .exachk_041120_010027_discovery

drwxr-xr-x 12 root root 4096 Apr 12 01:19 .exachk_041220_010035_discovery

drwxr-xr-x 12 root root 4096 Apr 13 01:20 .exachk_041320_01006_discovery

drwxr-xr-x 12 root root 4096 Apr 14 01:24 .exachk_041420_010045_discovery

drwxr-xr-x 12 root root 4096 Apr 15 01:18 .exachk_041520_010025_discovery

drwxr-xr-x 12 root root 4096 Apr 16 01:29 .exachk_041620_01004_discovery